SA57005

INTEGRATED CIRCUITS SA57005 Multiple output low noise, low dropout linear regulator Product data 2002 Jun 20 Philips Semiconductors Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 GENERAL DESCRIPTION The SA57005 is a very low dropout, low noise composite voltage regulator with three fixed independent outputs. The output voltages are preset to 2.5 V, 2.8 V and 3.0 V having a common input voltage pin VIN. Two ON/OFF switches allow Vo1 and Vo2/Vo3 to be turned off when not needed, thus conserving power. Also, three regulators in one package save board space, which is critical in microprocessor systems. Designed for battery-powered and portable applications the SA57005 achieves unequalled performance in all specifications such as low supply-current, low dropout voltage, low power consumption, small size, fast dynamic response to line and load, precision output and so on. Each of these regulators consists of an internal voltage reference, an error amplifier, resistors, and control switch. The SA57005 is housed in a VSOP-8A 8-lead package. FEATURES Very low dropout voltage: Vo3: 0.30 V typ. APPLICATIONS Vo1: 0.25 V typ.; Vo2: 0.28 V typ.; Low noise: 60 µVrms typ. (f = 10 Hz to 10 kHz; IO = 30 mA) High precision output voltage: ±3% Output current capacity: Low consumption current: Io1 and Io2 = 100 mA max; Io3 = 150 mA max. IIN1 = 250 µA typ., IIN2/IIN3 = 500 µA typ. (when not loaded), 3 µA max. (when off) C...