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AP2202 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AP2202 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
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1 / 13 page  150mA RF ULDO REGULATOR AP2202 Preliminary Datasheet 1 Aug. 2005 Rev. 1. 3 BCD Semiconductor Manufacturing Limited General Description The AP2202 is a 150mA ULDO regulator which pro- vides very low noise (45µVrms at 80Hz-100KHz), ultra low dropout voltage (typically 165mV at 150mA), very low quiescent current (1µA maximum) and excellent power supply ripple rejection (PSRR 75dB at 100Hz) in battery powered applications, such as handsets and PDAs and in noise sensitive applica- tions, such as RF electronics. The AP2202 also features logic compatible enable/ shutdown control inputs, a low power shutdown mode for extended battery life, over current protection, over temperature protection, as well as reversed-battery pro- tection. The output capacitor of 1.0µF minimum and 2.2µF minimum near its pin are recommended when CBYP is unused and 470pF respectively. Tantalum or alumin- ium electrolytic capacitors are adequate. Bypass capacitor is connected to the internal voltage reference to quiet noise. Its recommended value is from 470pF to 1nF. If output noise is not a major concern and rapid turn-on is necessary, omit CBYP and leave BYP open. The AP2202 has adjustable, 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3.0V, 3.3V and 4.0V versions. The AP2202 is available in space saving SOT-23-5 package. Features · Up to 150mA Regulator Output · Low Quiescent Current · Low Dropout Voltage: VD=165mV at 150mA · High Precision Output Voltage: ±1% · Output Noise: 45µVrms at 80Hz-100KHz · Good Ripple Rejection Ability: 75dB 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 Applications · Cellular Phones · Cordless Phones · Digital Still Cameras · Wireless Communicators · PDAs / Palmtops · PC Mother Board · Consumer Electronics SOT-23-5 Figure 1. Package Type of AP2202 |
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