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LD3985

Part Number	LD3985
Manufacturer	ST Microelectronics
Description	ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS
Published	Apr 25, 2005
Detailed Description	LD3985 Ultra low drop and low noise BiCMOS voltage regulators 627/ Features • Input voltage from 2.5 V to 6 V • St...
Datasheet	LD3985 PDF File

Overview

LD3985 Ultra low drop and low noise BiCMOS voltage regulators 627/ Features • Input voltage from 2.
5 V to 6 V • Stable with low ESR ceramic capacitors • Ultra low-dropout voltage (60 mV typ.
at 150 mA load, 0.
4 mV typ.
at 1 mA load) • Very low quiescent current (85 µA typ.
at no load, 170 µA typ.
at 150 mA load; max.
1.
5 µA in OFF mode) • Guaranteed output current up to 150 mA • Wide range of output voltages: 1.
22 V; 1.
8 V; 2.
5 V; 2.
7 V; 2.
8 V; 2.
9 V; 3 V; 3.
3 V; 4.
7 V • Fast turn-on time: typ.
200 µs [CO = 1 µF, CBYP = 10 nF and IO = 1 mA] • Logic-controlled electronic shutdown • Internal current and thermal limit • Output low noise voltage 30 µVRMS over 10 Hz to 100 kHz • SVR of 60 dB...

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