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RC2951M33
www.fairchildsemi.com RC2951 Adjustable Micropower Voltage Regulator Features Description • • • • • • • • • • • • The RC2951 is a voltage regulator specifically designed to maintain proper regulation with a very low dropout voltage (Typ. 40mV at light loads and 380 mV at 100mA). It has a low quiescent bias current of 75µA and is capable of supplying output currents in excess of 100mA. It has internal current and thermal limiting protection. The output can be programmed from 1.24V to 29V with two external resistors. A fixed output voltage (3.3V) is also available. High accuracy output voltage Guaranteed 100 mA output current Extremely low quiescent current Extremely tight load and line regulation Requires only a 1.0µF output capacitor for stability Internal Current and Thermal Limiting Error flag warns of output dropout Logic-controlled electronic shutdown Output programmable from 1.24 to 29V Fixed 3.3V version available -25°C to +85°C operating range 8 lead SOIC package The error flag output can be used as power-on reset for warning of a low output voltage. The Shutdown input feature allows a logic level signal to turn on and off the regulator output. The RC2951 is ideally suited for battery powered computer, consumer, and industrial equipment where an extension of useful battery life is desirable. The RC2951 is available in an 8-pin SOIC package. Block Diagram VOUT IL ≤ 100 mA Unregulated DC 7 8 FeedBack + 1 Input Output 2 + Sense – From CMOS or TTL Error Amplifier 3 Shut Down 6 + See Application Discussion VTAP 5 330kΩ + + 60 mV + – 1.23V Reference To CMOS or TTL Error 4 Ground Error Detection Comparator PRELIMINARY INFORMATION describes products that are not in full production at the time of printing. Specifications are based on design goals REV. 1.0.1 4/8/02 and limited characterization. They may change without notice. Contact Raytheon for current information.
FAIRCHILD
Fairchild Semiconductor International, Inc
U.S.A
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