L1923 Datasheet, PDF (2/7 Pages) Unisonic Technologies – 500mA HIGH PSRR LDO REGULATORS

L1923
„ MARKING INFORMATION
PACKAGE
VOLTAGE CODE
SOT-25
33:3.3V
35:3.5V
39:3.9V
„ PIN CONFIGURATION
Preliminary
MARKING
SHDN ¹
5 _SET
CMOS IC
GND ²
IN 3
4 _OUT
„ PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
SHDN
GND
IN
OUT
SET
DESCRIPTION
Active-Low Shutdown Input. A logic low reduces the supply current to less than 1µA.
Connect to IN for normal operation.
Ground. This pin also functions as a heatsink. Solder to large pads or the circuit board
ground plane to maximize thermal dissipation.
Regulator Input. Supply voltage can range from +2.5V to +5.5V. Bypass with 1µF to
GND
Regulator Output. Fixed or adjustable from 1.25V to +5.5V. Sources up to 500mA.
Bypass with a 4.7µF, ＜0.2Ω typical ESR capacitor to GND.
Feedback Input for Setting the Output Voltage. Connect to GND to set the output
voltage to the preset output voltage. Connect to an external resistor divider for
adjustable-output operation.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-440.b