MIC5207 Micrel, Inc.
March 2005 1 MIC5207
General Description
The MIC5207 is an efficient linear voltage regulator with ultra-
low-noise output, very low dropout voltage (typically 17mV at
light loads and 165mV at 150mA), and very low ground
current (720µA at 100mA output). The MIC5207 offers better
than 3% initial accuracy.
Designed especially for hand-held, battery-powered devices,
the MIC5207 includes a CMOS or TTL compatible enable/
shutdown control input. When shutdown, power consump-
tion drops nearly to zero.
Key MIC5207 features include a reference bypass pin to
improve its already low-noise performance, reversed-battery
protection, current limiting, and overtemperature shutdown.
The MIC5207 is available in fixed and adjustable output
voltage versions in a small SOT-23-5 package. Contact
Micrel for details.
For low-dropout regulators that are stable with ceramic
output capacitors, see the
µ
Cap MIC5245/6/7 family.
Ordering Information
Part Number*
Standard Marking Code Pb-Free Marking Code Voltage Temp Range Package
MIC5207BM5 LEAA MIC5207YM5 LEAA Adj –40°C to +125°CSOT-23-5
MIC5207-1.8BD5 NE18 MIC5207-1.8YD5 NE18 1.8 –40°C to +125°CThin SOT-23-5
MIC5207-1.8BM5 LE18 MIC5207-1.8YM5 LE18 1.8 –40°C to +125°CSOT-23-5
MIC5207-2.5BM5 LE25 MIC5207-2.5YM5 LE25 2.5 –40°C to +125°CSOT-23-5
MIC5207-2.8BM5 LE28 MIC5207-2.8YM5 LE28 2.8 –40°C to +125°CSOT-23-5
Contact Factory LE29 MIC5207-2.9YM5 LE29 2.9 –40°C to +125°CSOT-23-5
MIC5207-3.0BM5 LE30 MIC5207-3.0YM5 LE30 3.0 –40°C to +125°CSOT-23-5
Contact Factory LE31 MIC5207-3.1YM5 LE31 3.1 –40°C to +125°CSOT-23-5
MIC5207-3.2BM5 LE32 MIC5207-3.2YM5 LE32 3.2 –40°C to +125°CSOT-23-5
MIC5207-3.3BM5 LE33 MIC5207-3.3YM5 LE33 3.3 –40°C to +125°CSOT-23-5
MIC5207-3.6BM5 LE36 MIC5207-3.6YM5 LE36 3.6 –40°C to +125°CSOT-23-5
MIC5207-3.8BM5 LE38 MIC5207-3.8YM5 LE38 3.8 –40°C to +125°CSOT-23-5
MIC5207-4.0BM5 LE40 MIC5207-4.0YM5 LE40 4.0 –40°C to +125°CSOT-23-5
MIC5207-5.0BM5 LE50 MIC5207-5.0YM5 LE50 5.0 –40°C to +125°CSOT-23-5
MIC5207-3.3BZ --- MIC5207-3.3YZ — 3.3 –40°C to +125°CTO-92
*Other voltages available. Contact Micrel Marketing for information.
**Under bar symbol (_) may not be to scale.
MIC5207
180mA Low-Noise LDO Regulator
Final Information
Features
•Ultra-low-noise output
•High output voltage accuracy
•Guaranteed 180mA output
•Low quiescent current
•Low dropout voltage
•Extremely tight load and line regulation
•Very low temperature coefficient
•Current and thermal limiting
•Reverse-battery protection
•“Zero” off-mode current
•Logic-controlled electronic enable
Applications
•Cellular telephones
•Laptop, notebook, and palmtop computers
•Battery-powered equipment
•PCMCIA VCC and VPP regulation/switching
•Consumer/personal electronics
•SMPS post-regulator/dc-to-dc modules
•High-efficiency linear power supplies
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
MIC5207 Micrel, Inc.
MIC5207 2 March 2005
IN OUTGND
123
(Bottom View)
MIC5207-x.xBZ
TO-92
(Fixed Voltages)
Pin Configuration
Absolute Maximum Ratings (Note 1)
Supply Input Voltage (VIN)............................ –20V to +20V
Enable Input Voltage (VEN)........................... –20V to +20V
Power Dissipation (PD)............... Internally Limited, Note 3
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Junction Temperature (TJ)
all except 1.8V ...................................... –40°C to +125°C
1.8V only .................................................. 0°C to +125°C
Storage Temperature (TS) ....................... –65°C to +150°C
Operating Ratings (Note 2)
Input Voltage (VIN)....................................... +2.5V to +16V
Enable Input Voltage (VEN).................................. 0V to VIN
Junction Temperature (TJ)
all except 1.8V ...................................... –40°C to +125°C
1.8V only .................................................. 0°C to +125°C
Thermal Resistance (θJA)......................................... Note 3
Pin Description
Pin No. Pin No. Pin Name Pin Function
SOT-23-5 TO-92
11 IN Supply Input
22 GND Ground
3ENEnable/Shutdown (Input): CMOS compatible input. Logic high = enable,
logic low or open = shutdown.
4 (fix) BYP Reference Bypass: Connect external 470pF capacitor to GND to reduce
output noise. May be left open. For 1.8V or 2.5V operation, see “Applications
Information.”
4 (adj) ADJ Adjust (Input): Adjustable regulator feedback input. Connect to resistor
voltage divider.
53 OUT Regulator Output
IN
OUTBYP
EN
LExx
13
45
2
GND
MIC5207-x.xBM5
SOT-23-5
MIC5207-x.xBD5
TSOT-23-5
(Fixed Voltages)
Part
Identification
IN
OUTADJ
EN
LEAA
13
45
2
GND
MIC5207BM5
SOT-23-5
(Adjustable Voltage)
Typical Application
Battery-Powered Regulator Application
15
2
34
C
OUT
= 2.2µF
tantalum
C
BYP
(OPTIONAL)
Enable
Shutdown
Enable
V
OUT
Low-Noise Operation:
C
BYP
= 470pF, C
OUT
≥ 2.2µF
MIC5207-x.xBM5
EN (pin 3) may be
connected directly
to IN (pin 1).
V
IN
MIC5207 Micrel, Inc.
March 2005 3 MIC5207
Electrical Characteristics
VIN = VOUT + 1V; IL = 100µA; CL = 1.0µF; VEN ≥ 2.0V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C except
0°C ≤ TJ ≤ +125°C for 1.8V version; unless noted.
Symbol Parameter Conditions Min Typical Max Units
VOOutput Voltage Accuracy variation from specified VOUT –3 3 %
–4 4 %
∆VO/∆TOutput Voltage Note 4 40 ppm/°C
Temperature Coefficient
∆VO/VOLine Regulation VIN = VOUT + 1V to 16V 0.005 0.05 %/V
0.10 %/V
∆VO/VOLoad Regulation IL = 0.1mA to 150mA, Note 5 0.05 0.5 %
0.7 %
VIN – VODropout Voltage, Note 6 IL = 100µA1760mV
80 mV
IL = 50mA 115 175 mV
250 mV
IL = 100mA 140 280 mV
325 mV
IL = 150mA 165 300 mV
400 mV
IGND Quiescent Current VEN ≤ 0.4V (shutdown) 0.01 1 µA
VEN ≤ 0.18V (shutdown) 5µA
IGND Ground Pin Current, Note 7 VEN ≥ 2.0V, IL = 100µA80130 µA
170 µA
IL = 50mA 350 650 µA
900 µA
IL = 100mA 720 1100 µA
2000 µA
IL = 150mA 1800 2500 µA
3000 µA
PSRR Ripple Rejection 75 dB
ILIMIT Current Limit VOUT = 0V 320 500 mA
∆VO/∆PDThermal Regulation Note 8 0.05 %/W
eno Output Noise IL = 50mA, CL = 2.2µF, 260
nV Hz
470pF from BYP to GND
ENABLE Input
VIL Enable Input Logic-Low Voltage regulator shutdown 0.4 V
0.18 V
VIH Enable Input Logic-High Voltage regulator enabled 2.0 V
IIL Enable Input Current VIL ≤ 0.4V 0.01 –1 µA
VIL ≤ 0.18V –2 µA
IIH VIH ≥ 2.0V 5 20 µA
VIH ≥ 2.0V 25 µA
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is PD(max) = (T
J(max) –T
A) ÷ θJA. Exceeding the maximum
allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The θJA of the SOT-23-5
(M5) is 235°C/W and the TO-92 (Z) is 180°C/W (0.4" leads) or 160°C/W (0.25" leads) soldered to a PC board. See “Thermal Considerations.”
Note 4: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load
range from 0.1mA to 180mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Note 6: Dropout voltage is the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.
Note 7: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of
the load current plus the ground pin current.
Note 8: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 180mA load pulse at VIN = 16V for t = 10ms.
MIC5207 Micrel, Inc.
MIC5207 4 March 2005
Typical Characteristics
-100
-80
-60
-40
-20
0
1E+11E+2 1E+3 1E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
IOUT = 100µA
COUT = 1µF
VIN = 6V
VOUT = 5V
10 100 1k 10k 100k 1M 10M
-100
-80
-60
-40
-20
0
1E+11E+2 1E+3 1E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT
= 100µA
C
OUT
= 2.2µF
C
BYP
= 0.01µF
V
IN
= 6V
V
OUT
= 5V
10 100 1k 10k 100k 1M 10M
0
10
20
30
40
50
60
00.10.20.3 0.4
RIPPLE REJECTION (dB)
VOLTAGE DROP (V)
Power Supply Ripple Rejection
vs. Voltage Drop
I
OUT
= 100mA
10mA
1mA
C
OUT
= 1µF
-100
-80
-60
-40
-20
0
1E+11E+2 1E+3 1E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
IOUT = 1mA
COUT = 1µF
VIN = 6V
VOUT = 5V
10 100 1k 10k 100k 1M 10M
-100
-80
-60
-40
-20
0
1E+11E+2 1E+3 1E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT
= 1mA
C
OUT
= 2.2µF
C
BYP
= 0.01µF
V
IN
= 6V
V
OUT
= 5V
10 100 1k 10k 100k 1M 10M
0
10
20
30
40
50
60
70
80
90
100
00.10.20.3 0.4
RIPPLE REJECTION (dB)
VOLTAGE DROP (V)
Power Supply Ripple Rejection
vs. Voltage Drop
I
OUT
= 100mA
10mA
1mA
C
OUT
= 2.2µF
C
BYP
= 0.01µF
-100
-80
-60
-40
-20
0
1E+11E+2 1E+3 1E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT
= 10mA
C
OUT
= 1µF
V
IN
= 6V
V
OUT
= 5V
10 100 1k 10k 100k 1M 10M
-100
-80
-60
-40
-20
0
1E+11E+2 1E+3 1E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
IOUT = 10mA
COUT = 2.2µF
CBYP = 0.01µF
VIN = 6V
VOUT = 5V
10 100 1k 10k 100k 1M 10M
10
100
1000
10000
10 100 1000 10000
TIME (µs)
CAPACITANCE (pF)
Turn-On Time
vs. Bypass Capacitance
-100
-80
-60
-40
-20
0
1E+1 1E+2 1E+3 1E+41E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
IOUT = 100mA
COUT = 1µF
VIN = 6V
VOUT = 5V
10 100 1k 10k 100k 1M 10M
-100
-80
-60
-40
-20
0
1E+1 1E+2 1E+31E+4 1E+5 1E+6 1E+7
PSRR (dB)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
IOUT = 100mA
COUT = 2.2µF
CBYP = 0.01µF
VIN = 6V
VOUT = 5V
10 100 1k 10k 100k 1M 10M
0
40
80
120
160
200
240
280
320
04080120 160
DROPOUT VOLTAGE (mV)
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Output Current
+125°C
+25°C
–40°C
MIC5207 Micrel, Inc.
March 2005 5 MIC5207
Typical Characteristics
0.0001
0.001
0.01
0.1
1
10
1E+1 1E+2 1E+3 1E+4 1E+51E+6 1E+7
NOISE (µV/√Hz)
FREQUENCY (Hz)
Noise Performance
10 100 1k 10k 100k 1M 10M
1mA
COUT = 1µF
CBYP = 10nF
10mA, COUT = 1µF
VOUT = 5V
0.0001
0.001
0.01
0.1
1
10
1E+1 1E+2 1E+3 1E+4 1E+5 1E+61E+7
NOISE (µV/√Hz)
FREQUENCY (Hz)
Noise Performance
10mA
1mA
100mA
10 100 1k 10k 100k 1M 10M
V
OUT
= 5V
C
OUT
= 10µF
electrolytic
0.0001
0.001
0.01
0.1
1
10
1E+1 1E+2 1E+3 1E+4 1E+5 1E+61E+7
NOISE (µV/√Hz)
FREQUENCY (Hz)
Noise Performance
10mA
1mA
100mA
10 100 1k 10k 100k 1M 10M
V
OUT
= 5V
C
OUT
= 22µF
tantalum
C
BYP
= 10nF
0.0001
0.001
0.01
0.1
1
10
1E+1 1E+2 1E+3 1E+4 1E+5 1E+61E+7
NOISE (µV/√Hz)
FREQUENCY (Hz)
Noise Performance
10mA
1mA
100mA
10 100 1k 10k 100k 1M 10M
VOUT = 5V
COUT = 10µF
electrolytic
CBYP = 100pF
0.0001
0.001
0.01
0.1
1
10
1E+1 1E+2 1E+3 1E+4 1E+5 1E+61E+7
NOISE (µV/√Hz)
FREQUENCY (Hz)
Noise Performance
10mA
1mA
100mA
10 100 1k 10k 100k 1M 10M
V
OUT
= 5V
C
OUT
= 10µF
electrolytic
C
BYP
= 1nF
0.0001
0.001
0.01
0.1
1
10
1E+1 1E+2 1E+3 1E+4 1E+5 1E+61E+7
NOISE (µV/√Hz)
FREQUENCY (Hz)
Noise Performance
10mA
1mA
100mA
10 1k100 10k 100k 1M 10M
V
OUT
= 5V
C
OUT
= 10µF
electrolytic
C
BYP
= 10nF
MIC5207 Micrel, Inc.
MIC5207 6 March 2005
Block Diagrams
Current Limit
Thermal Shutdown
IN OUT
GND
Bandgap
Ref.
C
OUT
V
OUT
V
IN
MIC5207-x.xBZ
Low-Noise Fixed Regulator (TO-92 version only)
IN
EN
OUT
BYP
C
BYP
(optional)
GND
V
REF
Bandgap
Ref.
Current Limit
Thermal Shutdown
C
OUT
V
OUT
V
IN
MIC5207-x.xBM5
Ultra-Low-Noise Fixed Regulator
IN
EN
OUT
CBYP
(optional)
GND
VREF
Bandgap
Ref.
Current Limit
Thermal Shutdown
COUT
VOUT
VIN
R1
R2
MIC5207BM5
ADJ
Ultra-Low-Noise Adjustable Regulator
MIC5207 Micrel, Inc.
March 2005 7 MIC5207
drop across the part. To determine the maximum power
dissipation of the package, use the junction-to-ambient ther-
mal resistance of the device and the following basic equation:
P = T – T
D(max)
J(max) A
JA
()
θ
TJ(max) is the maximum junction temperature of the die,
125°C, and TA is the ambient operating temperature. θJA is
layout dependent; Table 1 shows examples of junction-to-
ambient thermal resistance for the MIC5207.
Package θθ
θθ
θJA Recommended θθ
θθ
θJA 1" Square θθ
θθ
θJC
Minimum Footprint Copper Clad
SOT-23-5 (M5) 235°C/W 170°C/W 130°C/W
Table 1. SOT-23-5 Thermal Resistance
The actual power dissipation of the regulator circuit can be
determined using the equation:
PD = (VIN – VOUT) IOUT + VIN IGND
Substituting PD(max) for PD and solving for the operating
conditions that are critical to the application will give the
maximum operating conditions for the regulator circuit. For
example, when operating the MIC5207-3.3BM5 at room
temperature with a minimum footprint layout, the maximum
input voltage for a set output current can be determined as
follows:
P125C 25C
235
D(max) =−
P425mW
D(max) =
The junction-to-ambient thermal resistance for the minimum
footprint is 220°C/W, from Table 1. The maximum power
dissipation must not be exceeded for proper operation. Using
the output voltage of 3.3V and an output current of 150mA,
the maximum input voltage can be determined. From the
Electrical Characteristics table, the maximum ground current
for 150mA output current is 3000µA or 3mA.
455mW = (VIN – 3.3V) 150mA + VIN·3mA
455mW = VIN·150mA – 495mW + VIN·3mA
920mW = VIN·153mA
VIN(max) = 6.01V
Therefore, a 3.3V application at 150mA of output current can
accept a maximum input voltage of 6V in a SOT-23-5 pack-
age. For a full discussion of heat sinking and thermal effects
on voltage regulators, refer to the Regulator Thermals sec-
tion of Micrel’s Designing with Low-Dropout Voltage Regula-
tors handbook.
Low-Voltage Operation
The MIC5207-1.8 and MIC5207-2.5 require special consid-
eration when used in voltage-sensitive systems. They may
momentarily overshoot their nominal output voltages unless
appropriate output and bypass capacitor values are chosen.
During regulator power up, the pass transistor is fully satu-
rated for a short time, while the error amplifier and voltage
reference are being powered up more slowly from the output
Applications Information
Enable/Shutdown
Forcing EN (enable/shutdown) high (> 2V) enables the regu-
lator. EN is compatible with CMOS logic gates.
If the enable/shutdown feature is not required, connect EN
(pin 3) to IN (supply input, pin 1). See Figure 1.
Input Capacitor
A 1µF capacitor should be placed from IN to GND if there is
more than 10 inches of wire between the input and the ac filter
capacitor or if a battery is used as the input.
Reference Bypass Capacitor
BYP (reference bypass) is connected to the internal voltage
reference. A 470pF capacitor (CBYP) connected from BYP to
GND quiets this reference, providing a significant reduction in
output noise. CBYP reduces the regulator phase margin;
when using CBYP, output capacitors of 2.2µF or greater are
generally required to maintain stability.
The start-up speed of the MIC5207 is inversely proportional
to the size of the reference bypass capacitor. Applications
requiring a slow ramp-up of output voltage should consider
larger values of CBYP. Likewise, if rapid turn-on is necessary,
consider omitting CBYP.
If output noise is not a major concern, omit CBYP and leave
BYP open.
Output Capacitor
An output capacitor is required between OUT and GND to
prevent oscillation. The minimum size of the output capacitor
is dependent upon whether a reference bypass capacitor is
used. 1.0µF minimum is recommended when CBYP is not
used (see Figure 2). 2.2µF minimum is recommended when
CBYP is 470pF (see Figure 1). Larger values improve the
regulator’s transient response. The output capacitor value
may be increased without limit.
The output capacitor should have an ESR (effective series
resistance) of about 5Ω or less and a resonant frequency
above 1MHz. Ultra-low-ESR capacitors can cause a low
amplitude oscillation on the output and/or underdamped
transient response. Most tantalum or aluminum electrolytic
capacitors are adequate; film types will work, but are more
expensive. Since many aluminum electrolytics have electro-
lytes that freeze at about –30°C, solid tantalums are recom-
mended for operation below –25°C.
At lower values of output current, less output capacitance is
required for output stability. The capacitor can be reduced to
0.47µF for current below 10mA or 0.33µF for currents below
1mA.
No-Load Stability
The MIC5207 will remain stable and in regulation with no load
(other than the internal voltage divider) unlike many other
voltage regulators. This is especially important in CMOS
RAM keep-alive applications.
Thermal Considerations
The MIC5207 is designed to provide 180mA of continuous
current in a very small package. Maximum power dissipation
can be calculated based on the output current and the voltage
MIC5207 Micrel, Inc.
MIC5207 8 March 2005
(see “Block Diagram”). Selecting larger output and bypass
capacitors allows additional time for the error amplifier and
reference to turn on and prevent overshoot.
To ensure that no overshoot is present when starting up into
a light load (100µA), use a 4.7µF output capacitance and
470pF bypass capacitance. This slows the turn-on enough to
allow the regulator to react and keep the output voltage from
exceeding its nominal value. At heavier loads, use a 10µF
output capacitance and 470pF bypass capacitance. Lower
values of output and bypass capacitance can be used,
depending on the sensitivity of the system.
Applications that can withstand some overshoot on the
output of the regulator can reduce the output capacitor and/
or reduce or eliminate the bypass capacitor. Applications that
are not sensitive to overshoot due to power-on reset delays
can use normal output and bypass capacitor configurations.
Please note the junction temperature range of the regulator
at 1.8V output (fixed and adjustable) is 0˚C to +125˚C.
Fixed Regulator Applications
15
2
34
2.2µF
470pF
VOUT
MIC5207-x.xBM5
VIN
Figure 1. Ultra-Low-Noise Fixed Voltage Regulator
Figure 1 includes a 470pF capacitor for ultra-low-noise op-
eration and shows EN (pin 3) connected to IN (pin 1) for an
application where enable/shutdown is not required. COUT =
2.2µF minimum.
15
2
34
1.0µF
Enable
Shutdown
EN
V
OUT
MIC5207-x.xBM5
V
IN
Figure 2. Low-Noise Fixed Voltage Regulator
Figure 2 is an example of a basic low-noise configuration.
COUT = 1µF minimum.
Adjustable Regulator Applications
The MIC5207BM5 can be adjusted to a specific output
voltage by using two external resistors (figure 3). The resis-
tors set the output voltage based on the following equation:
VV1
R2
R1 , V 1.242V
OUT REF REF
=+
=
This equation is correct due to the configuration of the
bandgap reference. The bandgap voltage is relative to the
output, as seen in the block diagram. Traditional regulators
normally have the reference voltage relative to ground;
therefore, their equations are different from the equation for
the MIC5207BM5.
Resistor values are not critical because ADJ (adjust) has a
high input impedance, but for best results use resistors of
470kΩ or less. A capacitor from ADJ to ground provides
greatly improved noise performance.
15
2
34
2.2µF
470pF
VOUT
MIC5207BM5
R1
R2
VIN
Figure 3. Ultra-Low-Noise
Adjustable Voltage Regulator
Figure 3 includes the optional 470pF noise bypass capacitor
from ADJ to GND to reduce output noise.
Dual-Supply Operation
When used in dual-supply systems where the regulator load
is returned to a negative supply, the output voltage must be
diode clamped to ground.
USB Application
Figure 4 shows the MIC5207-3.3BZ (3-terminal, TO-92) in a
USB application. Since the VBUS supply may be greater than
10 inches from the regulator, a 1µF input capacitor is in-
cluded.
V
BUS
D+
D–
GND
USB
Port
Data
EN OUT
FLG IN
ON/OFF
OVERCURRENT
MIC2525USB Controller
GND OUT
IN
V
CC
5.0V
0.1µF
10k
MIC5207-3.3BZ
IN OUT
GND
Upstream
V
BUS
100mA max.
Ferrite
Beads
150µF
V
BUS
D+
D–
GND
Data
1µF 1µF
Figure 4. Single-Port Self-Powered Hub
MIC5207 Micrel, Inc.
March 2005 9 MIC5207
Package Information
0.20 (0.008)
0.09 (0.004)
0.60 (0.024)
0.10 (0.004)
3.02 (0.119)
2.80 (0.110) 10°
0°
3.00 (0.118)
2.60 (0.102)
1.75 (0.069)
1.50 (0.059)
0.95 (0.037) REF
1.30 (0.051)
0.90 (0.035)
0.15 (0.006)
0.00 (0.000)
DIMENSIONS:
MM (INCH)
0.50 (0.020)
0.35 (0.014)
1.90 (0.075) REF
SOT-23-5 (M5)
TSOT-23-5 (D5)
MIC5207 Micrel, Inc.
MIC5207 10 March 2005
3
2
1
10° typ.
5° typ.
5° typ.
0.185 (4.699)
0.175 (4.445)
0.185 (4.699)
0.175 (4.445)
0.085 (2.159) Diam.
0.500 (12.70) Min.
0.090 (2.286) typ.
0.0155 (0.3937)
0.0145 (0.3683)
Seating Plane
0.025 (0.635) Max
Uncontrolled
Lead Diameter
0.016 (0.406)
0.014 (0.356)
0.105 (2.667)
0.095 (2.413)
0.055 (1.397)
0.045 (1.143)
0.090 (2.286) Radius, typ.
0.145 (3.683)
0.135 (3.429)
0.055 (1.397)
0.045 (1.143)
BOTTOM VIEW
TO-92 (Z)
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This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
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