CD00257532 Datasheet, PDF (1/19 Pages) STMicroelectronics – Application information

L4949ED-E
L4949EP-E
Multifunction very low drop
voltage regulator
Features
■ ECOPACK^®: lead free and RoHS compliant
■ Automotive Grade: compliance with AEC
guidelines
■ Operating DC supply voltage range 5 V - 28 V
■ Transient supply voltage up to 40V
■ Extremely low quiescent current in standby
mode
■ High precision standby output voltage 5V±1%
■ Output current capability up to 100mA
■ Very low dropout voltage less than 0.5V
■ Reset circuit sensing the output voltage
■ Programmable reset pulse delay with external
capacitor
■ Voltage sense comparator
■ Thermal shutdown and short circuit protections
SO-8
SO-20W (12+4+4)
Description
The L4949ED-E and L4949EP-E are monolithic
integrated 5V voltage regulators with a very low
dropout output and additional functions as power-
on reset and input voltage sense. They are
designed for supplying the microcomputer
controlled systems especially in automotive
applications.
Table 1. Device summary
Package
SO-8
SO-20W
November 2009
Tube
L4949ED-E
L4949EP-E
Order codes
Tape and reel
L4949EDTR-E
L4949EPTR-E
Doc ID 16823 Rev 1
1/19
www.st.com
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