1.2V/1.32V 0.4A Low Dropout Fixed-Mode Regulator
APE8912N/APE8913N
This datasheet contains new product information. Advanced Power Electronics Corp. reserves the rights to modify the product specification without notice. No liability is assumed as
a result of the use of this product. No rights under any patent accompany the sale of the product.
200907134
Pb Free Plating Product
Features
- 1.5V maximum dropout at full load current
- Fast transient response
- Output current limiting
- Built-in thermal shutdown
- Needs Only 1uF Capacitor for stability
- Good noise rejection
- 3-Terminal Fixed 1.2V/1.32V
- Low ESR Ceramic Capacitor for output stability
- Packages：SOT23
- RoHS Compliant
Applications
- PC peripheral
- Communication
- LCD Modules
General Description
APE891X is a low dropout fixed-mode regulator
with minimum of 0.4A output current capability. The
product is specifically designed to provide well
-regulated supply for low voltage IC applications such
as high-speed bus termination and low current 1.2V/1.32V
logic supply.
APE891X is guaranteed to have lower than 1.5V
dropout at full load current making it ideal to provide
well-regulated outputs of 1.2V/1.32V with 2.4V to 6V input
supply.
Ordering Information
APE 891XX
Low Dropout Regulator Package
N : SOT23
Typical Circuit
Advanced Power
Electronics Corp.
C2
1uF
C1
1uF
3.3V
1.2V/0.4A
1.2V fixed output
APE8912
2 : 1.2V FIX
3 : 1.32V FIX
C2
1uF
C1
1uF
3.3V 1.32V/0.4A
1.32V fixed output
APE8913
NR : SOT23
1
1.2V/1.32V 0.4A Low Dropout Fixed-Mode Regulator
APE8912N/APE8913N
Advanced Power Electronics Corp.
www.a-power.com.tw 2
Connection Diagram
SOT23 (N)
Block Diagram
3
Thermal
Shutdown
Vout
+
+
CURRENT
LIMIT
Vin
－
+
－
+
3
Thermal
Shutdown 2
1Vout
GND
1.2V
+
+
CURRENT
LIMIT
Vin
－
+
－
+
-
Advanced Power
Electronics Corp.
1
23
TOP VIEW
1. VOUT
2. GND
3. VIN
1
23
TOP VIEW
1. VIN
2. GND
3. VOUT
SOT23 (NR)
1.2V/1.32V 0.4A Low Dropout Fixed-Mode Regulator
APE8912N/APE8913N
Advanced Power Electronics Corp.
www.a-power.com.tw 3
Pin Descriptions
NAME I/O PIN # FUNCTION
GND I 2 2 Ground
Vout O 1 3
The output of the regulator. A minimum of 1uF capacitor
(10mohm < ESR < 1ohm) must be connected from this pin
Vin I 3 1
The input pin of regulator. A minimum of 1uF is connected from
this pin to ground to insure that the input voltage does not sag
below the minimum dropout voltage during the load transient
response. This pin must always be 1.5V higher than Vout in order
for the device to regulate properly.
Absolute Maximum Ratings
Symbol Parameter Rating Unit
Vin DC Supply Voltage -0.3 to 6 V
PD Power Dissipation Internally Limited
TST Storage Temperature -65 to +150 oC
TOP Operating Junction Temperature Range 0 to +150 oC
Advanced Power
Electronics Corp.
N NR
to ground to insure stability.
1.2V/1.32V 0.4A Low Dropout Fixed-Mode Regulator
APE8912N/APE8913N
Advanced Power Electronics Corp.
www.a-power.com.tw 4
Electrical Characteristics (Under Operating Conditions)
PA RAMETER CONDITIONS MIN TYP MAX UNIT
Output Voltage APE8913 IOUT = 10mA, TJ = 25oC,
VOUT+1.2V≦VIN≦6V 1.294 1.320 1.346 V
Line Regulation APE8912/3 IO=10mA,VOUT+1.5V<VIN<6V,
TJ=25oC 0.2 %
Load Regulation APE8912/3 VIN=3.3V,Vadj=10mA<Io<0.4A,
TJ=25oC (Note 1,2) 1 %
Dropout Voltage
(VIN-VOUT) APE8912/3 IOUT = 0.4A ,∆VOUT=1%VOUT 1.1 1.5 V
Current Limit APE8912/3 VIN = 3.3V 0.4 1.1 A
Minimum Load Current APE8912/3 0oC≦Tj≦125oC 3 5 mA
Thermal Regulation TA=25oC, 30ms pulse 0.008 0.04 %/W
F=120Hz,COUT=25uF Tantalum, IOUT=1A
Ripple Rejection APE8912/3 VIN=VOUT+3V 60 70 dB
Temperature Stability IO=10mA 0.5 %
JA
θ
Thermal Resistance
Junction-to-Ambient(No
heat sink ;No air flow)
SOT23
250
OC/W
JC
θ
Thermal Resistance
Junction-to-Case
SOT23 : Control Circuitry/Power Transistor
100
OC/W
Note1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant
junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.
Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 5W. Power dissipation is determined by the difference between
input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
Note3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 6V input/output differential the
device is guaranteed to regulate if the output current is greater than 10mA.
Advanced Power
Electronics Corp.
APE8912
1.176 1.2 1.224 V
1.2V/1.32V 0.4A Low Dropout Fixed-Mode Regulator
APE8912N/APE8913N
Advanced Power Electronics Corp.
www.a-power.com.tw 5
Typical Performance Characteristics
Temperature (
o
C)
Percent Change in Output Voltage vs Temperature
Output Voltage Change (%)
-50 -25 0 25 50 75 100 125 150
- 2
-1.5
- 1
-0.5
0
0. 5
1
1.5
2
TIME (us)
Line Transient Response
Output Voltage Deviation (mV) Input Voltage (V)
-40
-20
0
20
40
5.0
6.0
7.0 Cin=1uF
Cout=10uF Tantalum
0 20 40 60 80 100 120 140 160 180 200
TIME (us)
Load Transient Response
Load Current (A) Output Voltage Deviation (mV)
010
20 30 40 50 60 70 80 90 100
-1
0
1
2
-20
-10
0
10
20
30
Cin = 1uF
Cout = 10 uF Tantalum
Preload = 100mA
Temperature (
o
C)
Load Regulation vs Temperature
Output Voltage Deviation (%)
-25 0 25 50 75 100 125
- 1
-0.80
-0.40
-0.20
0
0.20
Advanced Power
Electronics Corp.
I Load=10mA
