LP8543

SNVS604D – AUGUST 2009 – REVISED MARCH 2013

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PIN DESCRIPTIONS(1) (continued)

Pin #

Name

Type

Description

5

ALSI

I

Ambient light sensor frequency input pin. This pin must be

connected to GND if ALS is not used.

6

ALSO

O

Ambient light sensor enable output

7

FAULT

OD

Fault indication output

8

P

and stand alone mode.

9

GND_S

G

Signal ground

10

SCLK

I

Serial clock. This pin must be connected to GND if not used.

11

SDA

I/O

Serial data. This pin must be connected to GND if not used.

12

OUT1

A

Current sink output

13

OUT2

A

Current sink output

14

OUT3

A

Current sink output

15

GND_L

G

Ground for current sink outputs

16

OUT4

A

Current sink output

17

OUT5

A

Current sink output. Can be left floating if not used.

18

OUT6

A

Current sink output. Can be left floating if not used.

19

OUT7

A

Current sink output. Can be left floating if not used.

20

ADR

I

Serial interface address selection. See SMBus/I2C Compatible Serial

Bus Interface for details. This pin must be connected to GND if not

used.

21

FB

A

Boost feedback input

22

A

LDO output voltage. 470 nF capacitor should be connected to this

pin.

23

P

Input power supply 5.5V to 22V

24

SW

A

Boost switch

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

4

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