Data Sheet 600mA CMOS LDO REGULATOR WITH ENABLE AP2111 General Description Features Output Voltage Accuracy: 1.5% The AP2111 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): The AP2111 provides 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 250mV (Typ) I =600mA 4.8V 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) it is also provides a excellent load regulation, line Low Quiescent Current: 55A (Typ) regulation and excellent load transient performance due to very fast loop response. The AP2111 has Low Standby Current: 0.01A (Typ) built-in auto discharge function. Low Output Noise: 50V RMS PSRR: 65dB f=1kHz, 65dB f=100Hz The AP2111 features low power consumption. OTSD Protection Stable with 1.0F Flexible Cap: Ceramic, The AP2111 is available in SOIC-8, PSOP-8 Tantalum and Aluminum Electrolytic SOT-223 and SOT-23-5 packages. Operating Temperature Range: -40C to 85C ESD: MM 400V, HBM 4000V Applications Laptop computer Potable DVD LCD Monitor SOIC-8 PSOP-8 SOT-223 SOT-23-5 Figure 1. Package Types of AP2111 Dec. 2012 Rev. 1. 7 BCD Semiconductor Manufacturing Limited 1 Data Sheet 600mA CMOS LDO REGULATOR WITH ENABLE AP2111 Pin Configuration M Package MP Package (SOIC-8) (PSOP-8) GND 8 EN 1 8 1 GND EN 2 VO UT 2 7 GND VO UT 7 GND GND 3 6 3 6 GND GND GND GND 5 GND VIN 4 5 4 VIN H/HA Package (SOT-223) 3 VIN 3 VO UT 2 VO UT 2 VIN 1 1 GND GND K Package (SOT-23-5) EN 1 5 ADJ/NC GND 2 VIN VOUT 34 Figure 2. Pin Configuration of AP2111 (Top View) Pin Descriptions Pin Number Pin Name Function SOIC-8/PSOP-8 SOT-223(H) SOT-223(HA) SOT-23-5 4 3 2 3 VIN Input voltage 2 2 3 4 VOUT Output voltage Chip enable, H normal work, L 8 1 EN shutdown output 1, 3, 5, 6, 7 1 1 2 GND Ground Adjust output for ADJ version/No 5 ADJ/NC connected for fixed version Dec. 2012 Rev. 1. 7 BCD Semiconductor Manufacturing Limited 2