LR3965G-12-AB3-D-R datasheet(3/10 Pages) UTC

3 / 10 page

LR3965

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 10

www.unisonic.com.tw

QW-R102-037.R



PIN CONFIGURATION

GND

VOUT

VIN

TO-252/TO-263

SHDN

VIN

VOUT

GND

SOP-8

VIN

GND

VOUT

SOT-223

GND

VIN

VOUT

SOT-89

SENSE/ADJ/SS/POK

VOUT

GND

VIN

TO-252-4/TO-252-5/TO-263-5

SHDN

SENSE/ADJ/SS/POK



PIN DESCRIPTION

PIN NAME

DESCRIPTION

VIN

Power Input Voltage. Supply voltage can range from 2.25V to 6V. Bypass with a 68µF capacitor

to GND.

GND

Ground

SHDN

Active-Low Shutdown Input. A logic low at SHDN reduces supply current to 0.01µA. In

shutdown, the POK output is low. Connect SHDN to VIN for normal operation.

VOUT

Output Voltage

ADJ

Voltage-adjust Input. Connect ADJ to GND for preset output. Connect an external resistive

voltage-divider from VOUT to ADJ to set the output voltage between 0.8V and 6V. The ADJ

regulation voltage is 800mV

SENSE

Remote sense pin.

Soft start time setting. For adjustable soft start time version, connect a capacitor from SS to gnd

to set the soft start time.

POK

Open-Drain, Active-Low Power-OK Output. POK remains low while the output voltage (VOUT) is

below the POK threshold.

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