Preliminary Datasheet

LP3352

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LP3352 Version 0.2 AUG-2018

Function Block Diagram

VL

Boost

EN

CH6

Control

Logic

OTP

OSC

Current

Setting

SCP

OCP

LED

Sink

Current

PGND

CH1

Internal

Regulator

UVLO

IN

OVP

CTRL

Dimming

Control

ISET

OUT

LX

GND

Figure 3. Function Block Diagram

Functional Pin Description

Pin NO.

Pin Name

Description

1

PGND

Power Ground.

2

LX

Boost Regulator Switching Node. Connect the inductor and the schottky diode to LX.

3

IN

Input Supply Pin. Decouple with 10

μF ceramic capacitor close to the pin.

4

OUT

Output Voltage Sense Pin.

5

ISET

LED Current Set Pin. Connect external resistor between this pin to gnd.

6

VL

Regulator Output Pin. Connect a ceramic capacitor between VL and GND.

7

CH1

LED string current sink channel 1.

8

CH2

LED string current sink channel 2.

9

CH3

LED string current sink channel 3.

10

AGND

Analog Ground.

11

CTRL

External PWM Dimming Control Pin.

12

CH4

LED string current sink channel 4.

13

CH5

LED string current sink channel 5.

14

CH6

LED string current sink channel 6.

15

EN

Enable Pin.

16

NC

No Connection.

17

EP

Exposed thermal pad. Connect to AGND or PGND.