AP2112
600mA CMOS LDO REGULATOR WITH ENABLE
Description Pin Assignments
The AP2112 is CMOS process low dropout linear regulator with
enable function, the regulator delivers a guaranteed 600mA (min.)
(Top View) (Top View)
continuous load current.
VOUT 1 8 VIN
VIN 1 5 VOUT
The AP2112 is available with a fixed output voltage of 1.2V, 1.8V,
NC
2.5V, 2.6V, or 3.3V. The LDO has an output accuracy of 1.5% and a 2 7 GND
GND 2
very fast loop response providing excellent performance for dealing
NC 3
6 GND
with line and load transients. The AP2112 includes an auto discharge
EN
EN 3 4 NC 4 5
NC
function which connects the output to ground via 60 of resistance
when the device is disabled.
SOT25 SO-8
The regulator features low power consumption, and provides SOT25,
SOT89-5, and SO-8 packages. Previously SOT-23-5, SOT-89-5 and
(Top View) (Top View)
SOIC-8 packages were respectively identified as SOT23-5, SOT89-5
and SO-8 but have been renamed to match the latest Diodes VIN VIN
VOUT VOUT
Incorporateds nomenclature.
5 4 5 4
Features
Output Voltage Accuracy: 1.5%
Output Current: 600mA (Min.)
1 2 3 1 2 3
Foldback Short Current Protection: 50mA
NC GND EN EN GND NC
Enable Function to Turn ON/OFF V
OUT
(R5 Package) (R5A Package)
Low Dropout Voltage (3.3V): 250mV (Typ.) @I = 600mA
OUT
SOT89-5 (Option 1)
Excellent Load Regulation: 0.2%/A (Typ.)
Excellent Line Regulation: 0.02%/V (Typ.)
(Top View) (Top View)
Low Quiescent Current: 55A (Typ.)
Low Standby Current: 0.01A (Typ.)
VOUT VIN VOUT VIN
Low Output Noise: 50V
RMS
5 5
4 4
PSRR: 100Hz -65dB, 1kHz -65dB
OTSD Protection
Stable with 1.0F Flexible Cap: Ceramic, Tantalum and
Aluminum Electrolytic
Operation Temperature Range: -40C to +85C
1 2 3 1 2 3
ESD: MM 400V, HBM 4000V
NC GND EN EN GND NC
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
(R5 Package) (R5A Package)
Halogen and Antimony Free. Green Device (Note 3)
SOT89-5 (Option 2)
Applications
Laptop Computer
LCD Monitor
Portable DVD
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See
AP2112
Typical Applications Circuit (Note 4)
VOUT
1.2V/1.8V/
VIN
VIN VOUT
2.5V/2.6V/
3.3V
COUT
CIN 1 mF
AP2112
1mF
VEN
ON
GND
OFF
Note 4: It is recommended to use X7R or X5R dielectric capacitor if 1.0F ceramic capacitor is selected as input/output capacitors.
Pin Descriptions
Pin Number
Pin Name Function
SOT25 SOT89-5 SO-8
1 4 8 VIN Input Voltage
2 2 6, 7 GND GND
3 (R5)
3 5 EN Chip Enable, H normal work, L shutdown output
1 (R5A)
1 (R5)
2, 3, 4 NC No Connection
3 (R5A)
5 5 1 VOUT Output Voltage
Functional Block Diagram
3(1){5}[3]
4(4){8}[1]
VIN
EN
Shutdown Logic
Thermal Foldback
A (B){C}[D]
Current Limit
Shutdown
A: SOT89-5 (R5)
B: SOT89-5 (R5A)
C: SO-8
5(5){1}[5]
D: SOT25
VOUT
3M
V
REF
GND
2(2){6,7}[2]
2 of 18
AP2112 June 2017
Diodes Incorporated
www.diodes.com
Document number: DS39724 Rev. 2 - 2