Advanced Power
Electronics Corp.
300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN
FEATURES DESCRIPTIOON
Low Dropout Voltage of 250mV at 300mA
Guaranteed 300mA Output Current
Very Low Quiescent Current at 30µA
±2% Output Voltage Accuracy
Needs Only 1µF Capacitor for Stability
Thermal Shutdown Protection
Current Limit Protection
Active Low Shutdown Control
Low-ESR Ceramic Capacitor for Output Stability.
Tiny Package: SOT-23-5L & TSOT-23-5L
RoHS Compliant & Halogen Free
APPLICATION
S
DSC
Wireless Devices
LCD Modules
Battery Power Systems
Card Readers
PDA
ORDERING / PACKAGE INFORMATION
Data and specifications subject to change without notice
20110615F
APE8800A
TYPICAL APPLICATIO
N
1
The APE8800A is a low dropout, positive linear
regulator with very low quiescent current. The APE8800A
can supply 300mA output current with low dropout voltage
at about 250mV. The BP pin with a 10nF bypass capacitor
can help reduce the output noise level. The shutdown
function can provide remote control for the external signal to
decide the on/off state of APE8800A. With a logic high level
at SHDN pin, the device is in the on state, and vice versa.
The APE8800A regulator is able to operate with output
capacitors as small as 1µF for stability. Other than the
current limit protection, APE8800A also offers the on chip
thermal shutdown feature providing protection against
overload or any condition when the ambient temperature
exceeds the maximum junction temperature.
The APE8800A offers high precision output voltage of
+2%. It is available in fixed output voltages including 1.2V,
1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.1V, 3.3V, 3.6V, 4.5V and
5.0V. The APE8800A is housed in low-profile, space-saving
SOT-23-5L & TSOT-23-5L package.
NoteTo prevent oscillation, it is recommended to use minimum 1µF X7R or X5R dielectric capacitors if
ceramics are used as input/output capacitors.
Figure 1. Typical Application Circuit of APE8800A
(Top View)
SOT-23-5L (Y5)
TSOT-23-5L (TY5)
3
2
5
4
1
VIN
GND
SHDN BP
VOUT
APE8800A - X X X -HF
Packag e TypeOutput Voltage
Y5 : SOT-23-5L
TY5 : T SO T- 2 3-5L
P: Pb Free with Commercial
Standard (RoHS Compliant)
12 : 1.2V
15 : 1.5V
18 : 1.8V
25 : 2.5V
28 : 2.8V
30 : 3.0V
31 : 3.1V
33 : 3.3V
36 : 3.6V
45 : 4.5V
50 : 5.0V
Halogen Free
Advanced Power
Electronics Corp. APE8800
A
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN) ----------------------------------------
-
6V
Power Dissipation -----------------------------------------
-
0.4W
Storage Temperature Range (Tstg) --------------------
-
-65°C To 150°C
Maximum Junction Temperature (TJ) ----------------- 150°C
Lead Temperature (Soldering, 10sec, TLEAD) ------
-
260°C
Thermal Resistance Junction to Ambient (Rthja) 250oC/W
NoteStresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
RECOMMENDED OPERATING CONDITIONS
Input Voltage (VIN) ----------------------------------------
-
2.8 to 5.5V
Operating Junction Temperature Range (TJ) ------
-
-40 to 125oC
Ambient Temperature (TA) -----------------------------
-40 to 85oC
ELECTRICAL SPECIFICATIONS
( VIN=VOUT+1V or VIN=2.8V whichever is greater, SHDN pin connected to VIN , CIN=1µF, COUT=1µF, TA=25 ºC,
unless otherwise specified)
Parameter SYM TEST CONDITION MIN TYP MAX UNITS
Output Voltage Accuracy VOUT IO=1mA -2 - 2 %
Current Limit ILIMIT RLoad=1Ω300 - - mA
Quiescent Current IQ
IO= 0mA - 30 55 µA
Standby Current ISTBY
VIN=2.8 ~ 5V, Output Off - - 1.5 µA
1.2V VOUT 2.0V - 1100 -
2.0V < VOUT 2.8V - 350 -
2.8V < VOUT 4.5V - 250 -
Line Regulation VLINE IO=1mA, VIN=VOUT +1V or 5V - 1 5 mV
Load Regulation (Note 2) VLOAD IO=0mA to 300mA - 6 20 mV
VIN=VOUT+1V
COUT=1uF, fRIPPLE = 120Hz
Output Noise nC
BP=10nF, f=1KHz, VIN=5V - 0.4 - uV/Hz
Temperature Coefficient TC IOUT = 1mA, VIN = 5V - 50 - ppm/ oC
Thermal Shutdown Temperature TSD - 160 - oC
Thermal Shutdown Hysteresis TSD - 25 - oC
Shutdown Pin Current ISHDN - - 0.1 µA
Noise Bypass Terminal Voltage VREF - 1.2 - V
Shutdown Pin Voltage (ON) VSHDN (ON) 1.4 - - V
Shutdown Pin Voltage (OFF) VSHDN (OFF) - - 0.4 V
Shutdown Exit Delay Time TC
BP=10nF, COUT=1uF, IO=30mA - 300 - µs
Note 1The dropout voltage is defined as VIN-VOUT, which is measured when VOUT drop about 100mV.
Note 2Regulation is measured at a constant junction temperature by using 40ms current pulse and load regulation in the load range from
0mA to 300mA.
60 -
2
Dropout Voltage (Note 1) VDROP mV
dBPSRR Ripple Rejection -
IO=300mA
Advanced Power
Electronics Corp.
PIN DESCRIPTIONS
PIN SYMBOL
Power is supplied to this device from this pin which is required an input filter capacitor. In general, the input
capacitor in the range of 1µF to 10µF is sufficient.
The output supplies power to loads. The output capacitor is required to prevent output voltage from oscillation.
The APE8800A is stable with an output capacitor 1µF or greater. The larger output capacitor will be required for
application with larger load transients. The large output capacitor could reduce output noise, improve stability,
and PSRR.
GND
BP
SHDN
VOUT
APE8800A
3
BLOCK DIAGRAM
VIN
Chip Enable (Active High)
PIN DESCRIPTION
Common ground pin
Reference Noise Bypass , the Bypass Capacitor > 1nF
Figure 2. Block Diagram of APE8800A
Advanced Power
Electronics Corp.
APPLICATION INFORMATI
O
Output & Input Capacitor
Protection Features
Thermal Consideration
Shutdown Operation
APE8800A
4
The APE8800A is a low dropout linear regulator that could provide 300mA output current at
dropout voltage about 250mV. Current limit and on chip thermal shutdown features provide
protection against any combination of overload or ambient temperature that could exceed maximum
junction temperature
The APE8800A regulator is designed to be stable with a wide range of output capacitors. The
ESR of the output capacitor affects stability. Larger value of the output capacitor decreases the
peak deviations and improves transient response for larger current changes.
The capacitor types (aluminum, ceramic, and tantalum) have different characterizations such
as temperature and voltage coefficients. All ceramic capacitors are manufactured with a variety of
dielectrics, each with different behavior across temperature and applications. Common dielectrics
used are X5R, X7R and Y5V. It is recommended to use 1uF to 10uF X5R or X7R dielectric ceramic
capacitors with 30mΩ to 50mΩ ESR range between device outputs and ground for stability. The
APE8800A is designed to be stable with low ESR ceramic capacitors and higher values of
capacitors and ESR could improve output stability. The ESR of output capacitor is very important
because it generates a zero to provide phase lead for loop stability.
There are no requirements for the ESR on the input capacitor, but its voltage and temperature
coefficient have to be considered for device application environment.
In order to prevent overloading or thermal condition from damaging the device, APE8800A has
internal thermal and current limiting functions designed to protect the device. It will rapidly shut off
PMOS pass element during overloading or over temperature condition.
The power handling capability of the device will be limited by maximum operation junction
temperature. The power dissipated by the device will be estimated by PD = IOUT x (VIN-VOUT). The
power dissipation should be lower than the maximum power dissipation listed in “Absolute Maximum
Ratings” section.
The APE8800A is shutdown by pulling the SHDN input low, and turned on by driving the SHDN
high. If this function is not used, the SHDN input should be tied to VIN to keep the regulator on at all
times (the SHDN must not be left floating).
Advanced Power
Electronics Corp. APE8800A
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current vs. Input Voltage Current Limit vs. Input Voltage
Current Limit vs. Temperature Quiescent Current vs. Temperature
5
Dropout Voltage vs. Temperature Output Voltage vs. Temperature
Advanced Power
Electronics Corp. APE8800A
TYPICAL PERFORMANCE CHARACTERISTICS
(VIN=5V, IOUT=150mA, CIN=1uF, COUT=1uF )
(VIN=4~5V IOUT=10mA CIN=1uF COUT=1uF ) (VIN=5V IOUT=1mA CIN=1uF COUT=1uF )
6
Shutdown Function Load Transient Response
Line Transient Response Shutdown Exit Delay Time
Advanced Power
Electronics Corp. APE8800A
MARKING INFORMATION
SOT-23-5L / TSOT-23-5L
7
F&SSS
Part Number : F& (see Identification code)
Date Code : SSS
Output Voltage Identification Code Output Voltage Identification Code
1.2V Fa 3.1V Fx
1.5V Fc 3.3V Fh
1.8V Fb 3.6V Fw
2.5V Fd 4.5V FM
2.8V Fe 5.0V Fv
3.0V Ff