Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE AP2112
General Description Features
Output Voltage Accuracy: 1.5%
The AP2112 is CMOS process low dropout linear
Output Current: 600mA (Min.)
regulator with enable function, the regulator delivers
Foldback Short Current Protection: 50mA
a guaranteed 600mA (min.) continuous load current.
Enable Function to Turn ON/OFF V
OUT
Low Dropout Voltage (3.3V): 250mV (Typ.)
The AP2112 provides 1.2V, 1.8V, 2.5V, 2.6V, 2.8V
@I =600mA
and 3.3V regulated output and 0.8V to 5V adjustable
OUT
Excellent Load Regulation: 0.2%/A (Typ.)
output, and provides excellent output accuracy 1.5%,
Excellent Line Regulation: 0.02%/V (Typ.)
also provides an excellent load regulation, line
Low Quiescent Current: 55A (Typ.)
regulation and excellent load transient performance
Low Standby Current: 0.01A (Typ.)
due to very fast loop response. The AP2112 has
Low Output Noise: 50V
built-in auto discharge function.
RMS
PSRR: 100Hz -65dB, 1kHz -65dB
OTSD Protection
The regulator features low power consumption, and
Stable with 1.0F Flexible Cap: Ceramic,
provides SOT-23-5, SOT-89-5, and SOIC-8 packages.
Tantalum and Aluminum Electrolytic
Operation Temperature Range: -40C to 85C
ESD: MM 400V, HBM 4000V
Applications
Laptop Computer
Portable DVD
LCD Monitor
SOT-23-5 SOT-89-5
SOIC-8 (Option 1) SOIC-8 (Option 2)
Figure 1. Package Types of AP2112
Mar. 2013 Rev. 2. 0 BCD Semiconductor Manufacturing Limited
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Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE AP2112
Pin Configuration
K Package M Package
SOT-23-5 SOIC-8
R5/R5A Package
SOT-89-5
R5 R5A
VOUT VIN
5 4
1 23
EN GND NC
Figure 2. Pin Configuration of AP2112 (Top View)
Pin Descriptions
PIN No.
Name Descriptions
SOT-23-5 SOT-89-5 SOIC-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)
Adjust Output for ADJ version/No Connection for Fixed
4 ADJ/NC
Version
1 (R5)
2, 3, 4 NC No Connection
3 (R5A)
5 5 1 VOUT Output Voltage
Mar. 2013 Rev. 2. 0 BCD Semiconductor Manufacturing Limited
2