L4943| Datasheet

Datasheet preview, take a look at Datasheets before downloading (Data Sheet is available on manufacturer site)

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 uP 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 0.5A

7 13

EN2

2

VADJ2 (3 11)V 0.5A

9 14

VS

5 HSD LOAD DUMP

4

HSD

6 P-GND

3 S-GND

8 TAB
D97AU668B

December 2000

1/6

L4943 Datasheet st Download PDF

Add this permalink to your bookmarks for future download of L4943 datasheet

Permalink: http://datasheet.emcelettronica.com/st/L4943

L4943 DATASHEET