General Description
The AS9103 is a CMOS low dropout, low noise, high PSRR, low quiescent current positive linear regulator with input voltage down to about 1.20V. The AS9103 can deliver a guaranteed 300mA load current with a low dropout voltage at 250mV that optimized for battery-powered systems or portable wireless devices such as mobile phones. The shutdown function can provide remote control for the external signal to decide the on/off state of AS9103 that consumes less than 0.1uA during shutdown mode.
The device is suitable for portable application such as cellular handsets or PDA. The AS9103 is designed and optimized to work with low cost ceramic capacitors 1.0uF, which consumes less than 0.1μA during shutdown mode. Besides, its current limit protection and on-chip thermal shutdown function provide protection against any combination of over-load or ambient temperature which could cause junction temperature exceeding maximum rating. The AS9103 includes a reference bypass pin in order to reduce output noise and a logic controlshut-down input.
The space-saving tiny SOT23-5L and DFN1010-4L packages are attractive for hand-held applications. The device is specified over an ambient temperature range of -40˚C to 125˚C.
Features
● Output Current Up to 300mA
● Low Voltage VIN Range: 1.20V to 5.5V
● Very Low Input Voltage at 1.20V (Min.)● Very Low Quiescent Current at 20uA
● Low Dropout voltage of 250mV at 300mA
● Output Voltage Accuracy at ±2.0%
● PSRR 75dB at 1.0KHz
● Needs Only 1.0uF Capacitor for Stability
● Less than 1uA Shutdown Current
● Without EMI and Switch Noise
● Low ESR Ceramic Capacitor for Output Stability
● Current Limit Protection
● Current Fold-back Protection● Less than 1uA Shutdown Current
● Without EMI and Switch Noise
● Low ESR Ceramic Capacitor for Output Stability
● RoHS and Green Compliant
● DFN1010-4L and SOT23-5L Packages
● -40℃ to +125 ℃ Temperature Range
● -40℃ to +125 ℃ Temperature Range
Applications
● PDAs and Digital Camera
● White LED Biasing
● Mobil Handsets
● Tablet PCs and Laptops/Netbooks
● Camcorder Video Light (Movie Light)
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