ADP125

Data Sheet 5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators ADP124/ADP125 08476-001 FEATURES Input voltage supply range: 2.3 V to 5.5 V 500 mA maximum output current Fixed and adjustable output voltage versions 1% initial accuracy Up to 31 fixed-output voltage options available from 1.75 V to 3.3 V Adjustable-output voltage range from 0.8 V to 5.0 V Very low dropout voltage: 130 mV Low quiescent current: 45 µA Low shutdown current: <1 µA Excellent PSRR performance: 60 dB at 100 kHz Excellent load/line transient response Optimized for small 1.0 μF ceramic capacitors Current limit and thermal overload protection Logic controlled enable Compact 8-lead exposed paddle MSOP and LFCSP packages APPLICATIONS Digital camera and audio devices Portable and battery-powered equipment Automatic meter reading (AMR) meters GPS and location management units Medical instrumentation Point of load power TYPICAL APPLICATION CIRCUITS VOUT = 3.3V C2 1 VOUT VIN 8 ADP124 2 VOUT VIN 7 VIN = 5.5V C1 VOUT 3 SENSE 4 GND NC 6 ON EN 5 OFF Figure 1. ADP124 with Fixed Output Voltage VOUT = 3.3V C2 R1 R2 1 VOUT VIN 8 ADP125 2 VOUT VIN 7 VIN = 5.5V C1 3 ADJ 4 GND NC 6 ON EN 5 OFF Figure 2. ADP125 with Adjustable Output Voltage 08476-002 GENERAL DESCRIPTION The ADP124/ADP125 are low quiescent current, low dropout linear regulators. They are designed to operate from an input voltage between 2.3 V and 5.5 V and to provide up to 500 mA of output current. The low 130 mV dropout...