LP3164 Datasheet, PDF (2/5 Pages) Lowpower Semiconductor inc – 4-Channel Current Source White LED Driver

Preliminary Datasheet
Functional Pin Description
Part No.
Package Type
Pin Configurations
LP3164
LP3164
QFN-16
LED1 13
NC 14
NC 15
NC 16
PGND
8 EN
7 VIN
6 PGND
5 AGND
PIN
QFN-16
1,2,3,4,9,14,15,16
5/6
7
8
10
11
12
13
NAME
DESCRIPTION
NC
No Internal Connection.
AGND/PGND Ground.
VIN
EN/PWM
LED4
Power Supply.
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.
LED4 cathode terminal.
LED3 LED3 cathode terminal.
LED2 LED2 cathode terminal.
LED1 LED1 cathode terminal
Function Block Diagram
LP3164 – Ver. 1.0 Datasheet Feb.-2008
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