L4979D Datasheet, PDF (1/10 Pages) STMicroelectronics – LOW DROP VOLTAGE REGULATOR

L4979D
L4979MD
LOW DROP VOLTAGE REGULATOR
1 FEATURES
■ OPERATING DC SUPPLY VOLTAGE RANGE
5.6V TO 31V
■ LOW QUIESCENT CURRENT
(6µA Typ. @ 25°C with Enable Low)
■ HIGH PRECISION OUTPUT VOLTAGE (2%)
■ LOW DROPOUT VOLTAGE LESS THAN 0.5V
■ RESET CIRCUIT SENSING THE OUTPUT
VOLTAGE DOWN TO 1V
■ PROGRAMMABLE RESET PULSE DELAY
WITH EXTERNAL CAPACITOR
■ WATCHDOG
■ PROGRAMMABLE WATCHDOG TIMER WITH
EXTERNAL CAPACITOR
■ THERMAL SHUTDOWN AND SHORT
CIRCUIT PROTECTION
■ AUTOMOTIVE TEMPERATURE RANGE
(Tj = -40°C TO 150°C)
■ ENABLE INPUT FOR ENABLING/DISABLING
THE VOLTAGE REGULATOR OUTPUT
Figure 2. Block Diagram
Figure 1. Packages
SO-8
Table 1. Order Codes
Part Number
L4979D
L4979MD
L4979D13TR
L4979MD13TR
SO-20
Package
SO-8
SO-20
SO-8 Tape & Reel
SO-20 Tape & Reel
Vi
Vs
5V, 150 mA
Vo
Co
Vcw
Ctw
Wi
watchdog
Voltage reference
Vcr
Ctr
reset
gnd
En
Res
October 2004
Rev. 5
1/10