ADP130

Data Sheet 350 mA, Low VIN, Low Quiescent Current, CMOS Linear Regulator ADP130 FEATURES 350 mA maximum output current Input voltage supply range VBIAS = 2.3 V to 5.5 V VIN = 1.2 V to 3.6 V 2.3 V < VIN < 3.6 V, VIN can be tied to VBIAS Very low dropout voltage: 17 mV @ 100 mA load Low quiescent current: 25 μA @ no load Low shutdown current: <1 μA ±1% accuracy @ 25°C Excellent PSRR performance: 70 dB @ 10 kHz Excellent load/line transient response Optimized for small 1 μF ceramic capacitors Current limit and thermal overload protection Logic controlled enable 5-lead TSOT package APPLICATIONS Mobile phones Digital camera and audio devices Portable and battery-powered equipment Post dc-to-dc regulation GENERAL DESCRIPTION The ADP130 is a low quiescent current, low dropout linear regulator. It is designed to operate in dual-supply mode with an input voltage as low as 1.2 V to increase efficiency and provide up to 350 mA of output current. The low 17 mV dropout voltage at a 100 mA load improves efficiency and allows operation over a wider input voltage range. A dual-supply power solution typically improves conversion efficiency over a single-supply solution because the higher VBIAS supply powers the part, and the lower VIN supply delivers current to the load. The power dissipated in the device is thereby reduced. 06963-001 TYPICAL APPLICATION CIRCUITS VIN = 1.8V + 1µF ON OFF 1 VIN VOUT = 1.2V VOUT 5 + ADP130 1µF 2 GND 3 EN VBIAS VBIAS = 3.6V 4 + 1µF Figure 1. VIN =...