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AMS2954 Dataheets PDF



Part Number AMS2954
Manufacturers Advanced Monolithic Systems
Logo Advanced Monolithic Systems
Description 250mA LOW DROPOUT VOLTAGE REGULATOR
Datasheet AMS2954 DatasheetAMS2954 Datasheet (PDF)

Advanced Monolithic Systems FEATURES • 2.5V, 3.0V, 3.3V and 5.0V Versions • High Accuracy Output Voltage • Extremely Low Quiescent Current • Low Dropout Voltage • Extremely Tight Load and Line Regulation • Very Low Temperature Coefficient • Current and Thermal Limiting • Needs Minimum Capacitance (1µF) for Stability • Unregulated DC Positive Transients 60V ADDITIONAL FEATURES (ADJ ONLY) • 1.24V to 29V Programmable Output • Error Flag Warning of Voltage Output Dropout • Logic Controlled Electroni.

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Advanced Monolithic Systems FEATURES • 2.5V, 3.0V, 3.3V and 5.0V Versions • High Accuracy Output Voltage • Extremely Low Quiescent Current • Low Dropout Voltage • Extremely Tight Load and Line Regulation • Very Low Temperature Coefficient • Current and Thermal Limiting • Needs Minimum Capacitance (1µF) for Stability • Unregulated DC Positive Transients 60V ADDITIONAL FEATURES (ADJ ONLY) • 1.24V to 29V Programmable Output • Error Flag Warning of Voltage Output Dropout • Logic Controlled Electronic Shutdown AMS2954 250mA LOW DROPOUT VOLTAGE REGULATOR RoHS compliant APPLICATIONS • Battery Powered Systems • Portable Consumer Equipment • Cordless Telephones • Portable (Notebook) Computers • Portable Instrumentation • Radio Control Systems • Automotive Electronics • Avionics • Low-Power Voltage Reference GENERAL DESCRIPTION The AMS2954 series are micropower voltage regulators ideally suited for use in battery-powered systems. These devices feature very low quiescent current (typ.75µA), and very low dropout voltage (typ.50mV at light loads and 380mV at 250mA) thus prolonging battery life. The quiescent current increases only slightly in dropout. The AMS2954 has positive transient protection up to 60V and can survive unregulated input transient up to 20V below ground. The AMS2954 was designed to include a tight initial tolerance (typ. 0.5%), excellent load and line regulation (typ. 0.05%), and a very low output voltage temperature coefficient, making these devices useful as a low-power voltage reference. The AMS2954 is available in the 3L TO-220 package, 3L TO-263, SOT-223, TO-252 and in 8-pin plastic SOIC and DIP packages. In the 8L SOIC and PDIP packages the following additional features are offered: an error flag output warns of a low output voltage, often due to failing batteries on input; the logic-compatible shutdown input enables the regulator to be switched on and off; the device may be pin-strapped for a, 2.5, 3.0V, 3.3V or 5V output, or programmed from 1.24V to 29V with an external pair of resistors. ORDERING INFORMATION PACKAGE TYPE 3 LEAD TO-220 3 LEAD TO-263 TO-252 SOT-223 8 LEAD SOIC 8 LEAD PDIP AMS2954ACT-X AMS2954ACM-X AMS2954ACD-X AMS2954AC-X AMS2954ACS-X AMS2954CP-X AMS2954CT-X AMS2954CM-X AMS2954CD-X AMS2954C-X AMS2954CS-X AMS2954CP-X X = 2.5V, 3.0V, 3.3V, 5.0V SOT-223 TOP VIEW 3L TO-220 FRONT VIEW OPERATING TEMP. RANGE IND. IND PIN CONNECTIONS 8L SOIC/ 8L PDIP OUTPUT 1 SENSE 2 SHUTDOWN 3 GROUND 4 8 INPUT 7 FEEDBACK 6 VTAP 5 ERROR 123 INPUT GND OUTPUT TO-252 FRONT VIEW TAB IS GND 3 OUTPUT 2 1 INPUT TAB IS GND 3 OUTPUT 2 GND 1 INPUT 3L TO-263 FRONT VIEW TAB IS GND 3 OUTPUT 2 GND 1 INPUT Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Supply Voltage -0.3 to +30V SHUTDOWN Input Voltage, Error Comparator Output Voltage,(Note 9) FEEDBACK Input Voltage -1.5 to +30V (Note 9) (Note 10) Power Dissipati.


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