AP2201 Datasheet | BCD Semiconductor

Description The AP2201 is a 150m A output current fixed voltage regulator designed to provide very low noise (45µVrms at 80Hz-100KHz), ultra low dropout voltage (typically 165m V at 150m A), very low quiescent current (1µA maximum) and excellent power supply ripple rejection (PSRR 75d B at 100Hz) in battery powered applications, such as handsets and PDAs and in noise sensitive applications, such as RF electronics. The AP2201 also features individual logic patible enable/shutdown control inputs, a low power shutdown mode for extended battery life, over current protection, over temperature protection, as well as reversed-battery protection. AP2201 Features - - - - - - - - - - - - - Up to 150m A Regulator Output Low Quiescent Current Low Dropout Voltage: VD=165m V at 150m A High Precision Output Voltage: ±1% Output Noise: 45µVrms at 80Hz-100KHz Good Ripple Rejection Ability: 75d B at 100Hz and IOUT=100µA Tight Load and Line Regulation Low Temperature Coefficient Over Current Protection Thermal Protection Reverse-battery Protection Zero Off-mode Current Logic-controlled Enable The output capacitor of 1.0µF minimum and 2.2µF minimum near its pin are remended when CBYP is not used and when CBYP is 470p F respectively. The Applications output capacitor should have 5Ω or less ESR, tantalum or aluminium electrolytic capacitors are adequate. - Cellular Phones Bypass capacitor is connected to the internal voltage - Cordless Phones .. reference to quiet noise. Its remended value is - Digital Still Cameras from 470p F to 1n F. If output noise is not a major con- - Wireless municators cern and rapid turn-on is necessary, omit CBYP and - PDAs / Palmtops leave BYP open. - PC Mother Board - Consumer Electronics The AP2201 has 2.6V, 2.8V and 3.0V versions now. The AP2201 is available in space saving 5-pin SOT23-5 package. VIN=3.8V VIN CIN 1.0µF AP2201-2.8 VIN EN GND BYP CBYP 470p F VOUT VOUT=2.8V + VOUT COUT 2.2µF tantalum SOT-23-5 Figure 1. Typical Application of AP2201 Figure 2....