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AMS2931T-5.0, AMS2942, AMS2950

Table of contents:
Info of AMS2931T-5.0
Info of AMS2942
Info of AMS2950

AMS2931T-5.0, AMS2942, AMS2950 Selling Leads, Datasheet

MFG:AMS Package Cooled:TO-220 D/C:08+/09+

AMS2931T-5.0, AMS2942, AMS2950 Datasheet download

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Part Number: AMS2931T-5.0

MFG: AMS

Package Cooled: TO-220

D/C: 08+/09+

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AMS2942 General Description

AMS2942 are micro power voltage regulators ideally suited for use with high voltage powered systems. This device feature very low quiescent current (typ.130?A), and very low dropout voltage (typ.45mV at light loads and 380mV at 100mA). The quiescent current increases only slightly in dropout. The AMS2942 has positive transient protection up to 60V and can survive unregulated input transient up to 20V below ground. AMS2942 is designed with a tight initial voltage reference tolerance, 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 regulator in telephone applications, using the telephone line as a power source. The AMS2942 is available in a special 8-pin plastic SOIC in which pin 2 and 3 are fused together with the package paddle serving also as heat sink. An error flag output warns of a low output voltage, often due to failing voltage on input line. A logic-compatible shutdown input is available, which enables the regulator to be switched on and off. The output voltage can be programmed from 1.23V to 42V with an external pair of resistors.

AMS2950 General Description

The AMS2950 and AMS2951 are micropower voltage regulators ideally suited for use in battery-powered systems. These devices feature very low quiescent current (typ.75A), and very low dropout voltage (typ.45mV at light loads and 380mV at 150mA) thus prolonging battery life. The quiescent current increases only slightly in dropout. The AMS2950/AMS2951 has positive transient protection up to 60V and can survive unregulated input transient up to 20V below ground.

The AMS2950 and AMS2951 were 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 AMS2950 is offered in the 3-pin TO-92 package. AMS2951 is available in 8-pin plastic SOIC and DIP packages and offers three major additional system features. An error flag outputwarns of a low output voltage, often due to failing batteries on input. The AMS2951 also features the logic-compatible shutdown input which enables the regulator to be switched on and off. The AMS2951 device may be pin-strapped for a 5.0V, 3.3V, 3.0V or 2.5 output, or programmed from 1.24V to 29V with an external pair of resistors.

AMS2950 Maximum Ratings

Input Supply Voltage .....................................................................-0.3 to +30V

Wave......... ......... ......... ......... ......... ......... ......... ......... ........4 seconds, 260
SHUTDOWN Input Voltage, Infrared ..... ..... ..... ..... ................4 seconds, 240
Error Comparator Output Vapor Phase ..... ..... ..... ..... ...........4 seconds, 219

FEEDBACK Input Voltage ..... ..... ..... ..... ..... ..... ............................-1.5 to +30V
Voltage,(Note 9) ESD TBD
Junction Temperature ..... ..... ..... ..... .....................................................+150
Storage Temperature ..... ..... ..... ..... ..........................................-65 to +150

(Note 9) (Note 10) OPERATING RATINGS (Note 1)
Power Dissipation Internally Limited

AMS2950 Features

5.0V, 3.3V, 3.0V and 2.5V 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 (1mmF) for Stability

Unregulated DC Positive Transients 60V
ADDITIONAL FEATURES (AMS2951 ONLY) 1.24V to 29V Programmable Output

Error Flag Warning of Voltage Output Dropout

Logic Controlled Electronic Shutdown

AMS2950 Typical Application

Battery Powered Systems

Portable Consumer Equipment

Cordless Telephones

Portable (Notebook) Computers

Portable Instrumentation

Radio Control Systems

Automotive Electronics

Avionics

Low-Power Voltage Reference

AMS2950 Connection Diagram

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