SC5205

POWER MANAGEMENT Description The SC5205 is a 150mA ultra low dropout linear regulator with a built in CMOS/TTL logic level enable switch. It is designed specifically for battery powered applications where low quiescent current and low dropout are critical for battery longevity. 150mA Ultra Low Dropout, Low Noise Micropower Linear Regulator PRELIMINARY Features Ultra low dropout voltage - 165mV @ 150mA Guaranteed 150mA output current Low ground pin current at all loads <5µA quiescent current in shutdown Wide input supply voltage range 2.5V to 16V in Wide output voltage range Excellent line regulation Industrial temperature range Surface mount packaging (5 pin SOT-23) SC5205 u u u u u u The SC5205 uses a Semtech proprietary internal PNP device for the pass element, providing a low dropout u voltage of 165mV at a load of 150mA, while maintaining u u a ground pin current of 2750µA. The output noise is reduced by placing a 10nF capacitor on pin 4 (bypass). Applications Battery Powered Systems Cellular Telephones Cordless Telephones Pagers Personal Digital Assistants Portable Instrumentation Cameras Portable Consumer Equipment PCMCIA cards u u Each device contains a bandgap reference, error u amplifier, PNP pass element, thermal and current u limiting circuitry and resistor divider network for setting u output voltage. u The SC5205 is packaged in a 5 pin SOT-23 surface mount u package for a very small footprint and it requires only a u 1µF capacitor on the output and a 0.01µF ...