LR3965

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 10

www.unisonic.com.tw

QW-R102-037.R

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PIN CONFIGURATION

GND

TO-252/TO-263

SHDN

GND

GND

GND

GND

8

7

6

5

4

3

2

1

SOP-8

1

2

3

GND

SOT-223

1

23

GND

SOT-89

1

2

3

1

2

3

4

5

SENSE/ADJ/SS/POK

GND

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

SHDN

SENSE/ADJ/SS/POK

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PIN DESCRIPTION

PIN NAME

DESCRIPTION

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

Output Voltage

ADJ

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

regulation voltage is 800mV

SENSE

Remote sense pin.

SS

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.