Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 General Description Features The AP2120 series are positive voltage regulator ICs Low Dropout Voltage at I =100mA: 200mV OUT fabricated by CMOS process. Each of these ICs con- Typical (Except 1.2V, 1.3V and 1.5V Versions) sists of a voltage reference, an error amplifier, a resis- Low Quiescent Current: 25A Typical tor network for setting output voltage, a current limit High Ripple Rejection: 65dB Typicalf=1kHz circuit for current protection. Output Current: More Than 150mA (250mA Limit) The AP2120 series feature high supply voltage ripple Extremely Low Noise: 15Vrms V =1.2V, OUT rejection, low dropout voltage, low noise, high output 1.3V, 1.5V (10Hz to 100kHz) voltage accuracy, and low current consumption which make them ideal for use in various battery-powered Excellent Line Regulation: 4mV Typical devices. Excellent Load Regulation: 12mV Typical High Output Voltage Accuracy: 2% The AP2120 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, Excellent Line Transient Response and Load 2.8V, 3.0V, 3.2V, 3.3V, 3.6V, 4.0V and 5.0V versions. Transient Response Compatible with Low ESR Ceramic Capacitor (as The AP2120 are available in standard SOT-23, SOT-89 Low as 1F) and TO-92 packages. Applications Mobile Phones, Cordless Phones Wireless Communication Equipment Portable Games Cameras, Video Recorders Sub-board Power Supplies for Telecom Equip- ment Battery Powered Equipment SOT-23 SOT-89 TO-92 (Bulk Packing) TO-92 (Ammo Packing) Figure 1. Package Types of AP2120 Mar. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 1 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Pin Configuration N/NA Package R Package (SOT-23) (SOT-89) N NA V GND IN 3 3 2 1 123 1 2 V V GND V IN GND V V OUT OUT IN OUT Z Package Z Package (TO-92 (Bulk Packing)) (TO-92 (Ammo Packing)) V 3 OUT V 3 OUT V V 2 2 IN IN GND 1 1 GND Figure 2. Pin Configuration of AP2120 (Top View) Pin Description Pin Number Pin Name Function SOT-23 (N) SOT-23 (NA) SOT-89/ TO-92 1 3 1 GND Ground 22 3 V Regulated Output Voltage OUT 31 2 V Input Voltage IN Mar. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2