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L4943 - MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO

Datasheet Summary

Description

The L4943 contains a triple voltage regulator and a high side driver.

In stand-by the output is active as long as possible even when in thermal shutdown or under any other fault conditions.

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Datasheet Details

Part number L4943
Manufacturer STMicroelectronics
File Size 113.91 KB
Description MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
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Full PDF Text Transcription

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® L4943 MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO 3 PROGRAMMABLE OUTPUTS: 3 TO 11V (500mA); 3 TO 11V (500mA); 3 TO 7V (500mA) STANDBY OUT1 AND OUT2 WITH INDEPENDENT ENABLE CONTROL FOR STAND-BY MODE 0.4A HIGH SIDE DRIVER LOAD DUMP PROTECTION THERMAL SHUTDOWN ♦ ♦ ♦ DESCRIPTION The L4943 contains a triple voltage regulator and a high side driver. In stand-by the output is active as long as possible even when in thermal shutdown or under any other fault conditions. The STCAP pin allows the use of a reserve supply capacitor that will hold enough energy for the BLOCK DIAGRAM Multiwatt 15 ORDERING NUMBER: L4943 5V Stand-by line to allow the µP to store data. FILTER CAP 11 GEN REF VMEM (3÷7)V 0.5A 10 ST CAP 12 VMEM VMEM_feed VADJ1 VADJ1_feed VADJ2 VADJ2_feed EN1 1 VADJ1 (3÷11)V 0.
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