Preliminary

Datasheet

LP3164

LP3164 – Ver. 1.0 Datasheet

Feb.-2008

Page 2 of 5

Functional Pin Description

Pa rt No .

P a cka g e Ty pe

P i n Co nf ig u r at io ns

LP3164

QFN-16

NC

NC

PGND

14

EN

AGND

7

15

PGND

NC

6

13

5

VIN

8

LED1

16

PIN

QFN-16

NAME

DESCRIPTION

1,2,3,4,9,14,15,16

NC

No Internal Connection.

5/6

AGND/PGND Ground.

7

VIN

Power Supply.

8

EN/PWM

Chip Enable(active High).and connects to a GPIO of MCU,the GPIO

supply a PWM singal dimming method to control the brightness(0-20mA) of

white LEDs and the PWM frequency from 200Hz to 10KHz,the duty from

0% to 100%.the typical frequency is 2KHz.

10

LED4

LED4 cathode terminal.

11

LED3

LED3 cathode terminal.

12

LED2

LED2 cathode terminal.

13

LED1

LED1 cathode terminal

Function Block Diagram