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LP5562TMX/NOPB.B 데이터시트(PDF) 10 Page - Texas Instruments

부품명 LP5562TMX/NOPB.B
상세설명  LP5562 Four-Channel RGB- or White-LED Driver With Internal Program Memory and Independent Channel Control
PDF  52 Pages
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제조업체  TI2 [Texas Instruments]
홈페이지  https://www.ti.com
Logo TI2 - Texas Instruments

LP5562TMX/NOPB.B 데이터시트(HTML) 10 Page - Texas Instruments

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PROGRAM
MEMORY
I
2
C
LP5562
SCL
SDA
CLK_32K
ADDR_SEL0
ADDR_SEL1
EN/VCC
VDD
GND
R
G
B
IDAC
Control
BIAS
REF
TSD
POR
OSC
CLK
DET
VDD_ IO
Command Based
PWM Pattern Generator
1PF
CIN
VDD
W
MCU
10
LP5562
SNVS820B – APRIL 2013 – REVISED DECEMBER 2016
www.ti.com
Product Folder Links: LP5562
Submit Documentation Feedback
Copyright © 2013–2016, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The LP5562 is a RGBW LED driver for indicator LED and keypad lighting. The device has an internal program
memory for creating a variety of lighting sequences. When the program memory has been loaded, the LP5562
can operate independently without processor control.
The device has 4 LED drivers that are constant current sinks with 8-bit current and 8-bit PWM control. The
current sinks can be controlled via the three execution engines or direct PWM control. The execution engines
have five different functions used to build lighting sequences: Ramp, Set PWM, Go to Start, Branch, or End
Trigger. These control methods and functions are explained in detail in Feature Description and Device
Functional Modes.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 LED Drivers Operational Description
The LP5562 has 4 LED drivers that are constant current sinks with 8-bit current and 8-bit PWM control. Current
is controlled from I2C registers. PWM can be controlled with program execution engines or direct I2C register
writes.
7.3.1.1 LED Driver Current Control
LED driver output current can be programmed with I2C register from 0 mA up to 25.5 mA. Current setting
resolution is 100 μA (8-bit control).



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