AS1376 1A, Low Input Voltage, Low Quiescent Current LDO The AS1376 is a dual supply rail linear regulator designed to General Description deliver 1A of load current while consuming only 67A (typ) of ground current. In the typical post regulation application VBIAS is directly connected to the main input supply, (range 2.5V 5.5V ) and VIN is supplied by the output voltage of a host DC-DC converter (range 0.7V 4.5V). The device offers excellent dropout (120mV 1A) and transient performance. In shutdown (Enable pin pulled low), the device turns off and reduces quiescent current consumption to 10nA (typ) at both VBIAS and VIN terminals. In shutdown, a 100 (typ) discharge path is connected between output and ground to provide rapid discharge of the overall load capacitance connected to the AS1376 output terminal. Auto-discharge minimizes the possibility that VOUT > VIN during shutdown. When VOUT > VIN, reverse current flows through the inherent body diode of the N-channel series pass transistor. The AS1376 also features internal protection against over-temperature, over-current and under-voltage conditions. The AS1376 is available in an 8-pin 2x2 TDFN package and AS1376B is available in a 6-balls WL-CSP. Both package options are qualified for operation over the -40C to 85C temperature range. Ordering Information and Content Guide appear at end of datasheet. ams Datasheet Page 1 v2-06 2016-Feb-11 Document FeedbackAS137 6 Gene ral Des c rip t ion Key Benefits & Features The benefits and features of this device are listed below: Figure 1: Added Value of Using AS1376 Benefits Features Less internal voltage losses and minimized Ultra-Low Dropout Voltage: <120mV 1A load self-heating Supports a variety of low voltage end applications Output Voltage from 0.5V to 3.3V Ideal as follower of a buck converter Input Voltage from 0.7V to 3.6V Independent bias supply ensures more robustness Bias Supply Voltage from 2.5V to 5.5V due to heavy load changes Supports a variety of high load applications Maximum Output Current up to 1A 8-pin TDFN 2x2mm package Cost effective, small package 6-balls WL-CSP with 0.4mm pitch Applications The devices are ideal for powering cordless and mobile phones, MP3 players, CD and DVD players, PDAs, hand-held computers, digital cameras and any other hand-held and/or battery-powered device. Page 2 ams Datasheet Document Feedback v2-06 2016-Feb-11