LR18120

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 9

www.unisonic.com.tw

QW-R502-305.O

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MARKING INFORMATION

PACKAGE

VOLTAGE CODE

MARKING

SOP-8

HSOP-8

10: 1.0V

12: 1.2V

15: 1.5V

18: 1.8V

25: 2.5V

AD: ADJ

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PIN CONFIGURATION

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PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1

POK

This pin will Indicate high under this situation: VO reaches 92% of its rating

voltage. Open-drain output.

2

VEN

The enable control Input pin. As while as this pin’s voltage falls below 0.4V ,the

LR18120 will stop working. When there’s nothing connected with this pin, for

active High version, the device will be enabled, for active Low version，the device

will be shutdowned

3

VIN

The pin of input voltage.

Placing large capacitance closely to this pin is necessary. There should be

connected a 10µF ceramic capacitor.

4

VPP

This pin is for input voltage to control circuit.

5

NC

Connected nothing.

6

VOUT

The voltage output pin.

7

ADJ

When this pin connected to the ground,VOUT will be set by the internal feedback

resistors. Otherwise, if using external feedback resistors to decide the VOUT, VOUT

= 0.8(R1+R2)/R2 Volts.

8

GND

Ground.

Exposed Pad

GND

Connect exposed pad to GND.