Datasheet > LX24232ILQ

LX24232ILQ

更新时间： 2024-11-25 11:40:51

品牌	Logo	应用领域
美高森美 - MICROSEMI		驱动器
页数	文件大小	规格书
2页	46K
描述
32 Channel BackLight LED Driver

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中文翻译

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LX24232ILQ 数据手册

P R O D U C T B R I E F

LX24232 - 32 Channel BackLight

LED Driver

DESCRIPTION

KEY FEATURES

The LX24232 is a 32-channel display backlight LED controller. The

device is part of a chipset consisting of the LX24232 and the LX23108A 8-

channel LED driver. Each controller is capable of controlling up to 32 LED

channels, by controlling up to four LX23108A LED drivers. Each driver

contains eight FETs and controls up to 4 x 8 LED channels, where each

channel is capable of driving a current of up to 200mA.

The LX24232 has 32 independent, frame-by-frame controlled PWM

output channels; each output channel supports independent duty-cycle

and phase delay control. It uses a V_syncinput for flexible synchronization

schemes, including synchronization to either rising or falling edges,

optimal V_syncjitter support, as well as single or multiple PWM cycles per

frame support, and loss of V_syncsupport.

The LX24232 consists of an on-chip internal power supply control

circuitry that can be used to adjust the voltage level of an external LED

power source. This is done by regulating the LED supply voltage to the

optimum level, and thus minimizing the system power loss. At the same

time, accurate current regulation for each of the 32 LED strings is

maintained.

♦

White LED or RGB BackLight

driver for large size display

panels

Up to 32 LED strings with

±1.5% precision current

matching

♦

Wide dimming ratio with PWM

and LED current amplitude

control

12-bit PWM duty-cycle

resolution and 8-bit resolution

for LED current setting

The LX24232 includes an on-chip analog to digital converter for drain

voltage (VD) measurements, for power supply control, fault detection and

protection. The device is configured through the SPI interface which

speeds up communication and reduces the number of control signals

between the LX24232 and the host system (FPGA, Video Processor, and

CPU).

The LX24232 supports a daisy chain connection in case more than 32

channels are required and can detect three types of system faults on each

of its 32 channels (over-temperature, open LEDs and short LEDs). After

detecting the faults the unit takes the required measures to protect the

system.

♦

LED power supply voltage

control

SPI communication interface

Open string, short LED and

over-temperature protection

for each individual channel

♦

On-chip thermal monitoring

The LX24232 is capable of controlling up to 8 LX23108A drivers, in a

special configuration where two consecutive channels are connected

together for increased current support. Refer to the application note for

more details.

PACKAGE ORDER INFO

Plastic 8x8mm QFN 56 pin

RoHS Compliant/Pb free

LX24232ILQ

T_A(°C)

-40 to +85°C

Note: Available in Tape & Reel. Append the letters ”TR” to the part number. (i.e. LX24232ILQ-TR)

Rev. 0.1, April 2011

Microsemi

中文翻译

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与LX24232ILQ相关器件

型号	品牌	获取价格	描述	数据表
LX24232ILQ-TR	MICROSEMI	获取价格	32 Channel BackLight LED Driver
LX24T3	GILWAY	获取价格	Linear Excimer Lamp
LX24T3/956/A4	GILWAY	获取价格	Linear Excimer Lamp
LX250M0820BPF-3540	YAGEO	获取价格	Aluminum Electrolytic Capacitor, Polarized, Aluminum (wet), 250V, 20% +Tol, 20% -Tol, 820u
LX250VB10RM12X25LL	ETC	获取价格	LXA/LX Series
LX250VB1R0M10X16LL	CHEMI-CON	获取价格	Aluminum Electrolytic Capacitor, Polarized, Aluminum (wet), 250V, 20% +Tol, 20% -Tol, 1uF,
LX250VB1ROM10X16LL	ETC	获取价格	LXA/LX Series
LX250VB22RM16X31LL	ETC	获取价格	LXA/LX Series
LX250VB2R2M10X16LL	ETC	获取价格	LXA/LX Series
LX250VB33RM16X35LL	ETC	获取价格	LXA/LX Series

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