Preliminary Datasheet

LP6270

LP6270QVF Version 1.0 Datasheet

NOV.-2013

www.lowpowersemi.com

Page 2 of 6

Typical Application Circuit

Functional Pin Description

Pin Number

Pin Name

Pin Function

1

FB1

Feedback Reference Voltage Pin. Series connect a resistor between WLED and

ground as a current sense. Sense the current feedback voltage to set the

current rating.

2

GND

Ground Pin

3

SW

Switch Pin. Connect this Pin to inductor and catch diode. Minimize the track

area to reduce EMI.

4

VDD2

Working Voltage within the Device

5

EN2

Chip Enable (Active High). Voltage sensing input to trigger the function of over

voltage protection. Note that this pin is high impedance. There should be a pull

low 100kΩ resistor connected to GND when the control signal is floating.

6

ISET2

Charge Current Set Input.

7

VOUT

Output pin.

8

ISET1

Charge Current Set Input.

9

VDD1

Working Voltage within the Device.

10

EN1

Chip Enable (Active High). Voltage sensing input to trigger the function of over

voltage protection. Note that this pin is high impedance. There should be a pull

low 100kΩ resistor connected to GND when the control signal is floating.