LP5523 datasheet(11/61 Pages) TI2

부품명	LP5523

상세설명	LP5523 Nine-Channel RGB- and White-LED Driver With Internal Program Memory and Integrated Charge Pump – DSBGA Package

PDF	61 Pages

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제조업체	TI2 [Texas Instruments]

홈페이지	https://www.ti.com

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11 / 61 page

CHARGE PUMP

1x/1.5x

0.47 µF

COUT

1 µF

VOUT

C1+

C1- C2+

C2-

D/A

PROGRAM

MEMORY

50H TO 6FH;

INSTRUCTIONS

PWM PATTERN

GENERATOR

PWM PATTERN

GENERATOR

PWM PATTERN

GENERATOR

12-BIT PWM

PATTERN

CONTROL

8-BIT

MAXIMUM

CURRENT

CONTROL

IDAC AND

HIGH SIDE

LED

DRIVERS

SCL

SDA

CLK

INT

ASEL1

ASEL0

TRIG

GPO

SERIAL

DATA

CTRL

REG

POR

THERMAL

SHUTDOWN

CLK

DET

1.25 MHz

OSC

BIAS

VREF

CONTROL

GND

CIN

1 µF

VDD

TEMP

COMP

LP5523

www.ti.com

SNVS550E – SEPTEMBER 2009 – REVISED JANUARY 2017

Product Folder Links: LP5523

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7 Detailed Description

7.1 Overview

The LP5523 is a fully integrated lighting management unit for producing lighting effects for mobile devices. The

LP5523 includes all necessary power management, high-side current sources, temperature compensation, two-

wire control interface and programmable pattern generators. The overall maximum current for each driver is set

by an 8-bit register.

The LP5523 controls LED luminance with a pulse width modulation (PWM) scheme with a resolution of 12 bits.

Also, the temperature compensation is done by PWM.

7.2 Functional Block Diagram

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