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L4946B

STMicroelectronics
Part Number L4946B
Manufacturer STMicroelectronics
Description QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET
Published Mar 22, 2005
Detailed Description ® L4946B QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET 4 OUTPUTS: 10V (125mA); 8.5V (250mA); 5V (200mA); 5V (100mA) 10...
Datasheet PDF File L4946B PDF File

L4946B
L4946B

Overview
® L4946B QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET 4 OUTPUTS: 10V (125mA); 8.
5V (250mA); 5V (200mA); 5V (100mA) 10V AND 5V (100mA) OUTPUT ARE LOW DROP 5V (100mA) ST-BY OUTPUT VOLTAGE EARLY WARNING OUTPUT FOR SUPPLY UNDERVOLTAGE (LVW) THERMAL SHUTDOWN AND CURRENT LIMITATION (FOLDBACK) REVERSE BATTERY AND LOAD DUMP PROTECTION INHIBIT (ON/OFF) AND RESET FUNCTIONS DESCRIPTION The L4946B is a quad output low drop voltage regulator.
The four outputs are a low drop 10V at 125mA (VO1), a 8.
5V at 250mA (VO2), a 5V at 200mA (VO3) and a low drop 5V st-by line at 100mA (VO4).
The IC includes a monitoring circuit to warn if a low voltage or no voltage condition is occurring.
VO1,2,3 are off during st-by mode.
BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY Multiwatt 11 ORDERING NUMBER: L4946B The STCAP pin allows the battery voltage to decay slowly giving the µP time to store data.
This IC is designed for supplying microcomputer controlled systems specially in automotive applications.
L4946B 125mA...


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