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LP5523 Datasheet(PDF) 11 Page - Texas Instruments

Part # LP5523
Description  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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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LP5523 Datasheet(HTML) 11 Page - Texas Instruments

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CHARGE PUMP
1x/1.5x
C2
0.47 µF
C1
0.47 µF
COUT
1 µF
VOUT
C1+
C1- C2+
C2-
D/A
D1
D2
D6
D7
D8
D9
PROGRAM
MEMORY
50H TO 6FH;
96
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
EN
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
VDD
TEMP
COMP
Copyright © 2016, Texas Instruments Incorporated
11
LP5523
www.ti.com
SNVS550E – SEPTEMBER 2009 – REVISED JANUARY 2017
Product Folder Links: LP5523
Submit Documentation Feedback
Copyright © 2009–2017, Texas Instruments Incorporated
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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