STLQ50XX Datasheet, PDF (1/18 Pages) STMicroelectronics – 50 mA, 3 μA supply current low drop linear regulator

STLQ50XX
50 mA, 3 µA supply current low drop linear regulator
Features
■ 2.3 V to 12 V input voltage range
■ 50 mA maximum output current
■ 3 µA quiescent current
■ Available in 1.8 V, 2.5 V, 3.3 V, 5.0 V and
adjustable
■ 200 mV dropout voltage at 25 mA output
current
■ Internal thermal protection
■ Available in SOT323-5L package, and SOT23-
5L package (upon request)
Applications
■ Portable/battery powered equipments
■ Electronic sensors
■ Microcontroller power
■ Real time clock backup power
SOT323-5L
SOT23-5L
(available on request)
Description
The STLQ50 is a BiCMOS linear regulator
specifically designed for operating in environment
with very low power consumption constraints.
Due to the very low quiescent current (3 µA) the
device is suitable for those application that have
very long stand-by time allowing extension of
battery life.
The P-MOS pass element allows also a very good
drop-out figure (200 mV at 25 mA I_O and 350 mV
at full load) without affecting the consumption
characteristics.
Housed in the very small SOT323-5L or SOT23-
5L, it fulfils the space saving requirements in
battery powered equipments.
Table 1. Device summary
Order codes
Part number
STLQ50XX18
STLQ50XX25
STLQ50XX33
STLQ50XX50
STLQ50
1. Available upon request.
Packages
SOT323-5L (T&R)
SOT23-5L (T&R) ⁽¹⁾
STLQ50C18R
STLQ50C25R
STLQ50C33R
STLQ50C50R
STLQ50C-R
STLQ50M18R
STLQ50M25R
STLQ50M33R
STLQ50M50R
STLQ50M-R
Output voltage
Fixed V_O = 1.8V
Fixed V_O = 2.5V
Fixed V_O = 3.3V
Fixed V_O = 5.0V
Adjustable
November 2007
Rev. 4
1/18
www.st.com
18