LR3865L-15-SH2-R datasheet(3/6 Pages) UTC

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LR3865

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CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

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QW-R102-099.c

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PIN DESCRIPTION

PIN No.

SOP-8

HSOP-8

PIN NAME

DESCRIPTION

Active-High Enable Input. A logic low at EN reduces

supply current to 0.5µA. In shutdown, the POK output is

low. Connect EN to VIN for normal operation.

VIN

Power Input Voltage. Supply voltage can range from

2.5V to 6V. Bypass with a 10µF capacitor to GND.

OUT

Output

Soft start time setting. For adjustable soft start time

version, connect a capacitor from SS to gnd to set the

soft start time.

5, 6, 7, 8

GND

Ground

POK

Open-Drain Power-ok Output. POK Remains low while

the output voltage is below the POK threshold. Connect

a 100 kohm Pullup resistor from POK to OUT

SET

Voltage-setting Input. Connect SET to GND for preset

output. Connect an external resistive voltage-divider

from OUT to SET to set the output voltage between

0.6V and 4.5V. The SET regulation voltage is 600mV

ADJ

Voltage-adjust Input. Connect an external resistive

voltage-divider from OUT to ADJ to set the output

voltage between 0.6V and 4.5V. The ADJ regulation

voltage is 600mV

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