L4979D, L4979MD
Automotive low dropout voltage regulator
*$3*&)7
SO-8
*$3*&)7
SO-20
Features
AEC-Q100 qu...
L4979D, L4979MD
Automotive low dropout
voltage regulator
*$3*&)7
SO-8
*$3*&)7
SO-20
Features
AEC-Q100 qualified Operating DC supply
voltage range 5.6 V to
31 V
Low quiescent current (6 µA typ. @ 25 °C with enable low)
High precision output
voltage (+/-2%)
Low dropout
voltage less than 0.5 V Reset circuit sensing the output
voltage down
to 1 V
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
Description
L4979D and L4979MD are low dropout linear regulators with microprocessor control functions such as low
voltage reset, watchdog, on/off control. Typical quiescent current is 100 µA in
Datasheet - production data
very low output current mode and enabled regulator. The devices drop to 6 µA with not enabled regulators.
On chip trimming results in high output
voltage accuracy (+/-2%). Accuracy is kept over wide temperature range, line and load variation.
The maximum input
voltage is 40 V. The max output current is internally limited. Internal temperature protection disables the
voltage regulator output.
Table 1. Device summary
Package
Order codes
Tube
Tape and reel
SO-8 SO-20
L4979D L4979MD
L4979D013TR L4979MD013TR
September 2018
This is information on a product in full production.
DS3717 Rev 11
1/22
www.st...