LD2979XX Datasheet, PDF (1/15 Pages) STMicroelectronics – Very low drop voltage regulators with inhibit

LD2979xx
Very low drop voltage regulators with inhibit
Features
■ Very low dropout voltage (0.2 V typ. at 50 mA
load)
■ Very low quiescent current (typ. 500 µA at 50
mA load)
■ Output current up to 50 mA
■ Logic-controlled electronic shutdown
■ Output voltages of 3.0; 3.3; 3.8; 5.0 V
■ Internal current and thermal limit
■ Supply voltage rejection: 63 dB (typ)
■ Only 1 µF for stability
■ Selection at 25 °C
■ Temperature range: -25 °C to 125 °C
■ Package available: SOT23-5L
Description
The LD2979 series are very low drop regulators
available in SOT23-5L.
The very low drop-voltage and the very low
quiescent current make them particularly suitable
for low noise, low power applications and in
battery powered systems.
Shutdown logic control function is available on
five pin version (TTL compatible). This means that
when the device is used as local regulator, it is
possible to put a part of the board in standby,
decreasing the total power consumption.
SOT23-5L
Table 1. Device summary
Part numbers
LD2979XX30
LD2979XX33
LD2979XX38
LD2979XX50
April 2008
Order codes
LD2979M30TR
LD2979M33TR
LD2979M38TR
LD2979M50TR
Rev 14
Output voltages
3.0 V
3.3 V
3.8 V
5.0 V
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