This is information on a product in full production.
June 2012 Doc ID 018687 Rev 3 1/40
1
STBP110
Overvoltage protection device
Datasheet - production data
Features
■Input overvoltage protection up to 28 V
■Integrated high voltage N-channel MOSFET
switch - low RDS(on) of 170 mΩ
■Integrated charge pump
■Maximum continuous current of 1.2 A
■Thermal shutdown
■Soft-start feature to control the inrush current
■Enable input (EN)
■Fault indication output (FLT)
■IN input ESD protection: ±15 kV air discharge,
±8 kV contact discharge (with 1 µF input
capacitor), ±2 kV HBM (standalone device)
■Certain overvoltage options compliant with the
China Communications Standard YD/T 1591-
2006 (overvoltage protection only)
■Small, RoHS compliant 2 x 2 x 0.75 mm TDFN
8-lead package with thermal pad.
Applications
■Smart phones
■Digital cameras
■PDA and palmtop devices
■MP3 players
■Low power handheld devices.
TDFN 8-lead (2 x 2 x 0.75 mm)
www.st.com
Contents STBP110
2/40 Doc ID 018687 Rev 3
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Input (IN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Output (OUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Fault indication output (FLT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Enable input (EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 No connect (NC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.6 Ground (GND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Normal operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Undervoltage lockout (UVLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Overvoltage lockout (OVLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Typical operating characteristics (STBP110GT). . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.1 Calculating the power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.2 Calculating the junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.3 PCB layout recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
10 Tape and reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
STBP110 Contents
Doc ID 018687 Rev 3 3/40
11 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12 Package marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
List of tables STBP110
4/40 Doc ID 018687 Rev 3
List of tables
Table 1. Pin description and signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 4. Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 5. DC and AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 6. Package mechanical dimensions for TDFN 8-lead (2 x 2 x 0.75 mm) . . . . . . . . . . . . . . . . 33
Table 7. Carrier tape dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 8. Further tape and reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 9. Reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 10. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 11. Marking description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 12. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
STBP110 List of figures
Doc ID 018687 Rev 3 5/40
List of figures
Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5. Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 7. Disable (EN = high). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 8. Recovery from OVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9. Maximum MOSFET current at TA = 85 °C for various PCB thermal performance
and TJ ≤
125 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 10. Startup, ton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 11. Overvoltage, toff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 12. Recovery from overvoltage, trec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 13. Disable, tdis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 14. Startup to overvoltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 15. Startup to overvoltage (detail). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 16. Soft-start performance for 10 μF capacitive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 17. Soft-start performance for 100 μF capacitive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 18. ICC vs. temperature at VIN = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 19. ICC vs. VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 20. ICC vs. VIN (detail) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 21. ICC(STDBY) vs. temperature at VIN = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 22. ICC(STDBY) vs. VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 23. ICC(STDBY) vs. VIN (detail) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 24. VOVLO vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 25. VUVLO vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 26. VOL(FLT) vs. temperature at ISINK(FLT) = 5 mA, VIN = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 27. RDS(on) vs. temperature at 5 V, 1 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 28. VIL(EN) vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 29. VIH(EN) vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 30. I(EN) vs. VIN at V(EN) = 5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 31. RPD(EN) vs. temperature at V(EN) = VIN = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 32. ton vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 33. trec vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 34. Package mechanical drawing for TDFN 8-lead (2 x 2 x 0.75 mm) . . . . . . . . . . . . . . . . . . . 32
Figure 35. Tape and reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 36. Reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 37. Tape trailer/leader. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 38. Pin 1 orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Description STBP110
6/40 Doc ID 018687 Rev 3
1 Description
The STBP110 device provides overvoltage protection for input voltage up to +28 V. Its low
RDS(on) N-channel MOSFET switch protects the systems connected to the OUT pin against
failures of the DC power supplies in accordance with the China MII Communications
Standard YD/T 1591-2006.
In the event of an input overvoltage condition, the device immediately disconnects the DC
power supply by turning off an internal low RDS(on) N-channel MOSFET to prevent damage
to protected components.
In addition, the device also monitors its own junction temperature and switches off the
internal MOSFET if the junction temperature exceeds the specified limit.
The device can be controlled by the microcontroller and can also provide status information
about fault conditions.
The STBP110 is offered in a small, RoHS-compliant 8-lead TDFN (2 mm x 2 mm) package.
Figure 1. Logic diagram
Figure 2. Pinout
1. Exposed thermal pad may be tied to GND.
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STBP110 Pin description
Doc ID 018687 Rev 3 7/40
2 Pin description
2.1 Input (IN)
Input voltage (IN) pin. The IN pin is connected to the DC power supply. An external low ESR
ceramic capacitor of minimum value 1 µF must be connected between IN and GND. This
capacitor is needed for decoupling and also protects the IC against fast voltage spikes and
ESD events. This capacitor should be located as close to the IN pin as possible.
2.2 Output (OUT)
Output voltage (OUT) pin. The OUT pin is connected to the input through a low RDS(on)
N-channel MOSFET switch.
If no fault is detected and the STBP110 is enabled by the EN input, this switch is turned on
and the output voltage follows the input voltage.
The output is disconnected from the input when the input voltage is under the UVLO
threshold or above the OVLO threshold, when the junction temperature is above the thermal
shutdown threshold or when the device is disabled by the EN input.
After the input voltage or junction temperature returns to the specified range, there is
a recovery delay, trec, and the power output is then connected to the input (see Figure 8).
The switch turn-on time is intentionally prolonged to limit the inrush current and voltage drop
caused, for example, by charging output capacitors (soft-start feature).
2.3 Fault indication output (FLT)
The active low, open-drain fault indication output provides information on the STBP110 state
to the application controller. The FLT is asserted (i.e. driven low), if the STBP110 is in the
overvoltage condition or thermal shutdown mode is active.
As the FLT output is of the open-drain type, it may be pulled up by an external resistor RPU
to the controller supply voltage (see Figure 4). If there is no need to use this output, it may
be left disconnected. The suitable RPU resistor value is in the range of 10 kΩ to 1 MΩ
.
To improve safety and to prevent damage to application circuits in the event of extreme
voltage or current conditions, an optional protective resistor RFLT can be connected between
the FLT output and the controller input (see Figure 4). The suitable RFLT resistor value is in
the range of 10 kΩ to 100 kΩ
.
The FLT output is in Hi-Z (high impedance) state when the device is disabled by EN input or
when the input voltage is lower than the UVLO threshold.
2.4 Enable input (EN)
This active low logical input can be used to enable or disable the device. When the EN input
is driven high, the STBP110 is in shutdown mode and the power output is disconnected
from the input (see Figure 8). When the EN input is driven low and all operating conditions
are within specified limits, the power output is connected to the input.
Pin description STBP110
8/40 Doc ID 018687 Rev 3
The EN input is equipped with an internal pull-down resistor of 250 kΩ (typical value). If
there is no need to use this input, it may be left floating or, preferably, connected to GND.
For VIN lower than 2.5 V (max.), the pull-down resistor is internally disconnected to lower the
EN pin input current in case the external AC adapter is not connected, the application is
running from an internal battery and the STBP110 device is disabled.
To improve safety and to prevent damage to application circuits in the event of extreme
voltage or current conditions, an optional protective resistor REN can be connected between
the EN input and the controller output (see Figure 4). The protective resistor forms a voltage
divider with the internal pull-down resistor, which limits the maximum possible REN value
with respect to the VIH(EN) threshold of EN input and the controller’s output voltage for logic
high, VOH. For the worst case, the highest protective resistor value is
RENmax = RPD(EN)min x (VOH / VIH(EN) - 1),
where RPD(EN)min is 100 kΩ and VIH(EN) is 1.2 V.
For most cases, an REN value of 10 kΩ to 100 kΩ is adequate.
The FLT output is in Hi-Z state when the device is disabled by EN input.
2.5 No connect (NC)
Pin 3, 6, and 7 are no connect (NC). They may be left floating or connected to GND.
2.6 Ground (GND)
Ground terminal. All voltages are referenced to GND. The exposed thermal pad is internally
connected to GND.
Table 1. Pin description and signal names
Pin Name Type Function
1 IN Input/supply Input voltage
2 GND Supply Ground
3, 6, 7 NC - Not connected
4FLT
Output Fault indication output (open-drain)
5EN
Input Enable input (pull-down resistor to GND)
8 OUT Output Output voltage
STBP110 Pin description
Doc ID 018687 Rev 3 9/40
Figure 3. Block diagram
Figure 4. Typical application circuit
1. Optional resistors REN and RFLT prevent damage to the controller under extreme voltage or current conditions and are not
required. Low ESR ceramic capacitor C1 is necessary to ensure proper function of the STBP110. Capacitor C2 is not
necessary for STBP110 but may be required by the charger IC.
2. The STBP110 MOSFET switch topology allows the current to flow also in a reverse direction, i.e. from OUT to IN, which
can be useful for powering external peripherals from the system connector. If the reverse current (supply current) is
undesirable, it may be prevented by connecting an external Schottky diode in series with the OUT pin. The voltage drop
between IN and the charger is then increased by the voltage drop across the diode.
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Operation STBP110
10/40 Doc ID 018687 Rev 3
3 Operation
The STBP110 provides overvoltage protection for positive input voltage up to 28 V using
a built-in low RDS(on) N-channel MOSFET switch.
3.1 Power-up
At power-up, with EN = low, the MOSFET switch is turned on after the startup delay, ton,
after the input voltage exceeds the UVLO threshold to ensure the input voltage is stabilized
(see Figure 5).
3.2 Normal operation
The device continuously monitors the input voltage and its own internal temperature so the
output voltage is kept within the specified range. The internal MOSFET switch is turned on
and the FLT output is deasserted.
The STBP110 enters normal operation state if the input voltage returns to the interval
between VUVLO and VOVLO - VHYS(OVLO) and the junction temperature falls below Toff -
THYS(off). The internal MOSFET is turned on after the trec delay to ensure that the conditions
have stabilized and the FLT output is deasserted.
Note: The STBP110 MOSFET switch topology allows the current to flow also in a reverse
direction, i.e. from OUT to IN, which can be useful for powering external peripherals from the
system connector (see the supply current in Figure 4). At first, the current flows through the
MOSFET body diode. If the voltage that appears on the IN terminal is above the UVLO
threshold, the MOSFET is (after the startup delay) turned on so the voltage drop across
STBP110 is significantly reduced.
If the reverse current is undesirable, it may be prevented by connecting an external, properly
rated low drop Schottky diode in series with the OUT pin. The voltage drop between IN and
charger is increased by the voltage drop across the diode.
3.3 Undervoltage lockout (UVLO)
To ensure proper operation under any condition, the STBP110 has an undervoltage lockout
(UVLO) threshold. When the input voltage is rising, the output remains disconnected from
input until the VIN voltage exceeds the VUVLO threshold. This circuit is equipped with
hysteresis, VHYS(UVLO), to improve noise immunity under transient conditions.
3.4 Overvoltage lockout (OVLO)
If the input voltage VIN rises above the threshold level VOVLO, the MOSFET switch is
immediately turned off. At the same time, the fault indication output FLT is activated
(i.e. driven low), see Figure 6. This device is equipped with hysteresis, VHYS(OVLO), to
improve noise immunity under transient conditions.
STBP110 Operation
Doc ID 018687 Rev 3 11/40
3.5 Thermal shutdown
If the STBP110 internal junction temperature exceeds the Toff threshold, the internal
MOSFET switch is turned off and the fault indication output FLT is driven low.
To improve thermal robustness, this circuit has a 20 °C hysteresis, THYS(off).
Due to the internal reverse diode, the thermal shutdown is not functional for the reverse
current.
Timing diagrams STBP110
12/40 Doc ID 018687 Rev 3
4 Timing diagrams
Figure 5. Power-up
1. EN input is low.
Figure 6. Overvoltage protection
1. EN input is low.
Figure 7. Disable (EN = high)
1. FLT output is in Hi-Z state when EN driven high.
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STBP110 Timing diagrams
Doc ID 018687 Rev 3 13/40
Figure 8. Recovery from OVP
1. EN input is low.
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Typical operating characteristics STBP110
14/40 Doc ID 018687 Rev 3
5 Typical operating characteristics
Figure 9. Maximum MOSFET current at TA = 85 °C for various PCB thermal
performance and TJ ≤
125 °C
Typical operating characteristics (STBP110GT)
Figure 10. Startup, ton
1. Output load is 100 kΩ
.
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STBP110 Typical operating characteristics
Doc ID 018687 Rev 3 15/40
Figure 11. Overvoltage, toff
1. Output load is 5 Ω
.
Figure 12. Recovery from overvoltage, trec
1. Output load is 5 Ω
.
Typical operating characteristics STBP110
16/40 Doc ID 018687 Rev 3
Figure 13. Disable, tdis
1. Output load is 5 Ω
.
Figure 14. Startup to overvoltage
1. Output load is 5 Ω
.
STBP110 Typical operating characteristics
Doc ID 018687 Rev 3 17/40
Figure 15. Startup to overvoltage (detail)
1. Output load is 5 Ω
. Almost no glitch on the output.
Figure 16. Soft-start performance for 10 μF capacitive load
1. Output load is 10 µF in parallel with 5 Ω
.
Typical operating characteristics STBP110
18/40 Doc ID 018687 Rev 3
Figure 17. Soft-start performance for 100 μF capacitive load
1. Output load is 100 µF in parallel with 5 Ω
.
Figure 18. ICC vs. temperature at VIN = 5 V
4EMP ;#=
)##
!-
STBP110 Typical operating characteristics
Doc ID 018687 Rev 3 19/40
Figure 19. ICC vs. VIN
Figure 20. ICC vs. VIN (detail)
6).;6=
)##
4!#
4!#
4!#
!-
6).;6=
)##
4!#
4!#
4!#
!-
Typical operating characteristics STBP110
20/40 Doc ID 018687 Rev 3
Figure 21. ICC(STDBY) vs. temperature at VIN = 5 V
Figure 22. ICC(STDBY) vs. VIN
!-
4EMP ;#=
)##34$"9
!-
6). ;6=
)##34$"9
4!#
4!#
4!#
STBP110 Typical operating characteristics
Doc ID 018687 Rev 3 21/40
Figure 23. ICC(STDBY) vs. VIN (detail)
Figure 24. VOVLO vs. temperature
6). ;6=
)##34$"9
4!#
4!#
4!#
!-
4EMP;#=
6/6,/;6=
!-
Typical operating characteristics STBP110
22/40 Doc ID 018687 Rev 3
Figure 25. VUVLO vs. temperature
Figure 26. VOL(FLT) vs. temperature at ISINK(FLT) = 5 mA, VIN = 5 V
!-
4EMP;#=
656,/ ;6=
!-
4EMP ;#=
6/,&,4 ;M6=
STBP110 Typical operating characteristics
Doc ID 018687 Rev 3 23/40
Figure 27. RDS(on) vs. temperature at 5 V, 1 A
Figure 28. VIL(EN) vs. temperature
!-
4EMP;#=
2$3ON =
!-
4EMP;#=
6
),%.;6=
Typical operating characteristics STBP110
24/40 Doc ID 018687 Rev 3
Figure 29. VIH(EN) vs. temperature
Figure 30. I(EN) vs. VIN at V(EN) = 5 V
!-
4EMP;#=
6)(%.;6=
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)%.
4!#
4!#
4!#
STBP110 Typical operating characteristics
Doc ID 018687 Rev 3 25/40
Figure 31. RPD(EN) vs. temperature at V(EN) = VIN = 5 V
Figure 32. ton vs. temperature
!-
4EMP;#=
20$%.
!-
4EMP;#=
TON ;MS=
Typical operating characteristics STBP110
26/40 Doc ID 018687 Rev 3
Figure 33. trec vs. temperature
!-
4EMP;#=
TREC ;MS=
STBP110 Maximum rating
Doc ID 018687 Rev 3 27/40
6 Maximum rating
Stressing the device above the rating listed in Ta b l e 2 may cause permanent damage to the
device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in Section 3 of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability. Refer
also to the STMicroelectronics™ SURE Program and other relevant documentation.
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
TSTG Storage temperature (VIN off) -55 to 150 °C
TSLD(1)
1. Reflow at peak temperature of 260 °C. The time above 255 °C must not exceed 30 seconds.
Lead solder temperature for 10 seconds 260 °C
TJOperating junction temperature range (internally limited to Toff) -40 to 150 °C
VIN IN pin input voltage -0.3 to 30 V
VOUT OUT pin input/output voltage -0.3 to 12 V
VIO Input/output voltage (other pins) -0.3 to 7 V
ILOAD Load current (IN to OUT) 1200 mA
IREVERSE Reverse diode current (OUT to IN) 500 mA
ISINK(FLT) FLT pin sink current 15 mA
VESD
ESD withstand voltage (IEC 61000-4-2, IN pin only)(2)
2. System-level value (see typical application circuit, C1 ≥ 1 µF low ESR ceramic capacitor).
±15 (air),
±8 (contact) kV
Human body model (HBM), model = 2(3)
3. Human body model, 100 pF discharged through a 1.5 kΩ resistor according to the JESD22/A114
specification.
2000 V
Machine model (MM), model = B(4)
4. Machine model, 200 pF discharged through all pins according to the JESD22/A115 specification.
200 V
Table 3. Thermal data
Symbol Parameter Value Unit
RthJA Thermal resistance (junction-to-ambient) 59(1)
1. The package was mounted on a 4-layer JEDEC test board with 2 thermal vias connecting from the thermal
land to the first buried plane. The 4-layer PCB (2S2P) was constructed based on JESD 51-7 specifications
and vias based on JESD 51-5.
°C/W
RthJC Thermal resistance (junction-to-case) 5.9 °C/W
DC and AC parameters STBP110
28/40 Doc ID 018687 Rev 3
7 DC and AC parameters
This section summarizes the operating measurement conditions, and the DC and AC
characteristics of the device. The parameters in Table 5 are derived from tests performed
under the measurement conditions summarized in Table 4. Designers should check that the
operating conditions in their circuit match the operating conditions when relying on the
quoted parameters.
Table 4. Operating and AC measurement conditions
Parameter Value Unit
Input voltage (VIN)5V
Ambient operating temperature (TA) -40 to 85 °C
Junction operating temperature (TJ) -40 to 125 °C
Logical input rise and fall times 5 ns
Table 5. DC and AC characteristics
Symbol Description Test condition(1) Min. Typ. Max. Unit
VIN Input voltage range VUVLO 28 V
VUVLO
Input undervoltage lockout
threshold (VIN rising)
Option T
Option U
Option V
2.5
2.8
3.1
2.7
3.0
3.25
2.9
3.2
3.4
V
VHYS(UVLO)
Undervoltage lockout
hysteresis(2) 100 mV
VOVLO Overvoltage lockout threshold
VIN raises OVLO threshold, option A 5.25 5.375 5.50
V
VIN raises OVLO threshold, option B 5.30 5.50 5.70
VIN raises OVLO threshold, option C 5.71 5.90 6.10
VIN raises OVLO threshold, option D 5.70 6.02 6.40
VIN raises OVLO threshold, option E 6.20 6.40 6.60
VIN raises OVLO threshold, option F 6.60 6.80 7.00
VIN raises OVLO threshold, option G 7.00 7.20 7.40
VHYS(OVLO) Input overvoltage hysteresis 30 60 90 mV
RDS(on) IN to OUT resistance V(EN) = 0 V, VIN = 5 V, ILOAD = 0.5 A 170 280 mΩ
ICC Operating current V(EN)= 0 V, ILOAD = 0 A 140 210
µA
ICC(STDBY) Standby current V(EN) = 5 V, ILOAD = 0 A 80 120
VOL(FLT)FLT output low level voltage VIN > VOVLO, ISINK(FLT) = 5 mA 350 800 mV
IL(FLT)FLT output leakage current VFLT = 5 V 0.1 2 µA
VIL(EN)EN low level input voltage 0.4 V
STBP110 DC and AC parameters
Doc ID 018687 Rev 3 29/40
VIH(EN)EN high level input voltage 1.2 V
RPD(EN)
EN internal pull-down
resistor(3) VIN > 2.5 V, V(EN) = 5 V 100 250 400 kΩ
Timing parameters
ton Startup delay(4) Time measured from VIN > VUVLO to
VOUT = 0.3 V (no load on the output). 8ms
toff(5) Output turn-off time
Time measured from VIN > VOVLO to
VOUT
≤
0.3 V. VIN increasing from
5.0 V to 8.0 V at 3.0 V/µs, RLOAD = 5 Ω,
CLOAD = 0.
1
µs
tdis(5) Disable time Time measured from V(EN)
≥
1.2 V to
VOUT < 0.3 V, RLOAD = 5 Ω, CLOAD = 0. 15
trec
Recovery delay from UVLO,
OVLO, or thermal shutdown(4) Time measured to VOUT = 0.3 V
(no load on the output) 8ms
Thermal shutdown
Toff
Thermal shutdown threshold
temperature 140 150 °C
THYS(off) Thermal shutdown hysteresis 20 °C
1. Test conditions described in Table 4 (except where noted).
2. Hysteresis of 60 mV typ. available upon request.
3. Version without pull-down resistor or with permanently connected pull-down resistor available upon request.
4. Delays of 16, 32, and 64 ms available upon request.
5. Guaranteed by design. Not tested in production.
Table 5. DC and AC characteristics (continued)
Symbol Description Test condition(1) Min. Typ. Max. Unit
Application information STBP110
30/40 Doc ID 018687 Rev 3
8 Application information
8.1 Calculating the power dissipation
The worst case power dissipation of the STBP110 internal power MOSFET can be
calculated using the following formula:
Equation 1
PD = ILOAD2 x RDS(on)(max),
where ILOAD is the load current and RDS(on)(max) is the maximum value of MOSFET
resistance.
Example 1
VIN = 5 V, RLOAD = 5 Ω, RDS(on)(max) = 280 mΩ
ILOAD = VIN / (RDS(on)(max) + RLOAD) = 5 / (5 + 0.280) = 0.95 A
PD = 0.952 x 0.28 = 0.25 W
The power dissipation of the reverse diode in powering accessories mode can be estimated
as PD = (VOUT - VIN) x IREVERSE ≈ 0.7 x IREVERSE.
8.2 Calculating the junction temperature
The maximum junction temperature for given power dissipation, ambient temperature, and
thermal resistance junction-to-ambient can be calculated as:
Equation 2
TJ = TA + 1.15 x PD x RthJA = TA + 1.15 x ILOAD2 x RDS(on)(max) x RthJA,
where TJ is junction temperature, TA is given ambient temperature, 1.15 is a derating factor,
and RthJA is a junction-to-ambient thermal resistance, depending on PCB design. The
junction temperature may not exceed 125 °C (see Ta b l e 4 ) to stay within the specified range.
Maximum allowed MOSFET current for ambient temperature TA = 85 °C and various RthJA
values are listed in Figure 9.
Example 2
For conditions listed in the previous example, with a well designed PCB (ensuring
RthJA = 59 °C/W) and TA = 85 °C, the maximum junction temperature is:
Equation 3
TJ = 85 + 1.15 x 0.25 x 59 = 102 °C,
which is a safe value (below 125 °C).
STBP110 Application information
Doc ID 018687 Rev 3 31/40
8.3 PCB layout recommendations
●Input capacitor C1 should be located as close as possible to the STBP110 device. It
should be a low-ESR ceramic capacitor. Also the protective resistors RFLT and REN
(if used) should be located close to the STBP110 (see Figure 4).
●For good thermal performance, it is preferred to couple the STBP110 exposed thermal
pads with the PCB ground plane. In most designs, this requires thermal vias between
the copper pads on the PCB and the ground plane.
Package mechanical data STBP110
32/40 Doc ID 018687 Rev 3
9 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com. ECOPACK
is an ST trademark.
Figure 34. Package mechanical drawing for TDFN 8-lead (2 x 2 x 0.75 mm)
$
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STBP110 Package mechanical data
Doc ID 018687 Rev 3 33/40
Table 6. Package mechanical dimensions for TDFN 8-lead (2 x 2 x 0.75 mm)(1)
1. Controlling dimension: millimeters.
Symbol
Dimensions
mm inches
Typ. Min. Max. Typ. Min. Max.
A 0.75 0.70 0.80 0.030 0.028 0.031
A1 0.02 0.00 0.05 0.001 0.000 0.002
A3
REF 0.20 — — 0.008 — —
b 0.25 0.20 0.30 0.010 0.008 0.012
D
BSC 2.00 — — 0.079 — —
D2 1.60 1.45 1.70 0.063 0.057 1.067
E
BSC 2.00 — — 0.079 — —
E2 0.90 0.75 1.00 0.035 0.030 0.039
e 0.50 — — 0.020 — —
L 0.30 0.25 0.35 0.012 0.010 0.014
ddd(2)
2. Lead coplanarity should not exceed 0.08 mm.
— — 0.08 — — 0.003
N(3)
3. N is the total number of terminals.
88
Tape and reel information STBP110
34/40 Doc ID 018687 Rev 3
10 Tape and reel information
Figure 35. Tape and reel
4
+0
!
"
0
0
#ENTER LINES
OF CAVITY
7
%
&
$
4OPCOVER
TAPE
5SERDIRECTIONOFFEED
!-V
Table 7. Carrier tape dimensions
Tape size W D E P0 P2 F
8 8.00 +0.30 / -0.10 1.50 +0.10 / -0.0 1.75 ± 0.1 4.00 ± 0.10 2.00 ± 0.10 3.50 ± 0.05
Table 8. Further tape and reel information
Package codeWA0B0K0P1 T
Bulk
qty.
Reel
diameter
2 x 2 mm TDFN 8-lead 8 2.30 ± 0.05 2.30 ± 0.05 1.00 ± 0.05 4.00 ± 0.10 0.250 ± 0.05 3000 7
STBP110 Tape and reel information
Doc ID 018687 Rev 3 35/40
Figure 36. Reel dimensions
Figure 37. Tape trailer/leader
!
$
"
&ULLRADIUS
4APESLOT
INCOREFOR
TAPESTART
MMMINWIDTH
'MEASURED
ATHUB
#
.
MMMIN
ACCESSHOLE
ATSLOTLOCATION
4
!-
Table 9. Reel dimensions
Tape size A max. B min. C D min. N min. G T max.
8 mm 180 (7 inch) 1.5 13 ± 0.2 20.2 60 8.4 +2 / -0 14.4
,%!$%2
.OCOMPONENTS
#OMPONENTS
.OCOMPONENTS
42!),%2
MMMIN
3TART
MM MIN MMMIN
%ND
3EALEDWITHCOVERTAPE
5SERDIRECTIONOFFEED
4OP
COVER
TAPE
!-
Tape and reel information STBP110
36/40 Doc ID 018687 Rev 3
Figure 38. Pin 1 orientation
1. Drawings are not to scale.
2. All dimensions are in mm, unless otherwise noted.
5SERDIRECTIONOFFEED
!-
STBP110 Part numbering
Doc ID 018687 Rev 3 37/40
11 Part numbering
Note: Currently available part numbers are marked bold in Ta b l e 1 1 . For other options, or for more
information on any aspect of this device, please contact the nearest ST sales office.
Table 10. Ordering information scheme
STBP110 A T DJ 6 F
Device type
STBP110
Overvoltage threshold
A = 5.375 V
B = 5.50 V
C = 5.90 V
D = 6.02 V
E = 6.40 V
F = 6.80 V
G = 7.20 V
Undervoltage threshold
T = 2.70 V
U = 3.00 V
V = 3.25 V
Package
DJ = TDFN8 2 x 2 x 0.75 mm
Temperature range
6 = -40 °C to +85 °C
Shipping method
F = ECOPACK® package, tape and reel
Package marking information STBP110
38/40 Doc ID 018687 Rev 3
12 Package marking information
Note: Currently available part numbers are marked bold in Ta b l e 1 1 . For other options, or for more
information on any aspect of this device, please contact the nearest ST sales office.
Table 11. Marking description
Part number Overvoltage threshold (V) Undervoltage threshold (V) Topside marking
STBP110ATxxxx 5.375 2.70 11A
STBP110BTxxxx 5.50 2.70 11B
STBP110CTxxxx 5.90 2.70 11C
STBP110DTxxxx 6.02 2.70 11D
STBP110ETxxxx 6.40 2.70 11E
STBP110FTxxxx 6.80 2.70 11F
STBP110GTxxxx 7.20 2.70 11H
STBP110AUxxxx 5.375 3.00 11K
STBP110BUxxxx 5.50 3.00 11L
STBP110CUxxxx 5.90 3.00 11M
STBP110DUxxxx 6.02 3.00 11N
STBP110EUxxxx 6.40 3.00 11P
STBP110FUxxxx 6.80 3.00 11Q
STBP110GUxxxx 7.20 3.00 11R
STBP110AVxxxx 5.375 3.25 11T
STBP110BVxxxx 5.50 3.25 11U
STBP110CVxxxx 5.90 3.25 11V
STBP110DVxxxx 6.02 3.25 11W
STBP110EVxxxx 6.40 3.25 11X
STBP110FVxxxx 6.80 3.25 11Y
STBP110GVxxxx 7.20 3.25 11Z
STBP110 Revision history
Doc ID 018687 Rev 3 39/40
13 Revision history
Table 12. Document revision history
Date Revision Changes
27-Apr-2011 1 Initial release.
04-May-2011 2 Updated Figure 38.
07-Jun-2012 3
Removed “Preliminary data”, updated Section 2.2, Section 2.4,
Section 3.2, Section 3.5, Section 8.2, Figure 3, Figure 9, Figure 38,
Ta b le 5 , Ta bl e 1 0 , Table 1 1 and Disclaimer, added Section : Typical
operating characteristics (STBP110GT), minor text corrections
throughout document.
STBP110
40/40 Doc ID 018687 Rev 3
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