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LP8543SQE/NOPB

更新时间： 2024-11-10 11:08:07
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德州仪器 - TI 驱动接口集成电路显示驱动器驱动程序和接口
页数 文件大小 规格书
40页 1197K
描述
适用于中型 LCD 背光的 SMBus/I2C 控制型 WLED 驱动器 | RTW | 24 | -30 to 85

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中文翻译

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LP8543SQE/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN, LCC24,.16SQ,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.08
数据输入模式：SERIAL输入特性：STANDARD
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-PQCC-N24
JESD-609代码：e3长度：4 mm
湿度敏感等级：1复用显示功能：NO
功能数量：1区段数：70
端子数量：24最高工作温度：85 °C
最低工作温度：-30 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC24,.16SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：12 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Display Drivers最大压摆率：0.001 mA
最大供电电压：22 V最小供电电压：5.5 V
标称供电电压：12 V表面贴装：YES
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mm最小 fmax：0.025 MHz
Base Number Matches：1

LP8543SQE/NOPB 数据手册

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LP8543  
www.ti.com  
SNVS604D –AUGUST 2009–REVISED MARCH 2013  
SMBus/I2C Controlled WLED Driver for Medium-Sized LCD Backlight  
Check for Samples: LP8543  
1
FEATURES  
DESCRIPTION  
The LP8543 is a white LED driver with integrated  
boost converter. It has 7 adjustable current sinks  
which can be controlled by SMBus or I2C-compatible  
serial interface, PWM input and Ambient Light Sensor  
(ALS).  
2
•
•
•
High-Voltage DC/DC Boost Converter with  
Integrated FET  
5.5V to 22V Input Voltage Range to Support 2x,  
3x and 4x Li-Ion Batteries.  
PWM Phase Shift Control with Adaptive Boost  
Output to Increase Efficiency Compared to  
Conventional Boost Converters Topologies  
The boost converter has adaptive output voltage  
control based on the LED driver voltages. This  
feature minimizes the power consumption by  
adjusting the voltage to lowest sufficient level in all  
conditions. Phase Shift PWM dimming offers further  
power saving especially when there is poor matching  
in the forward voltages of the LED strings. Boost  
voltage can also be controlled through the  
SMBus/I2C.  
•
•
PWM Brightness Control for Single Wire  
Control and Stand-Alone Use  
Digital Ambient Light Sensor Interface with  
User-Programmed Ambient Light to Backlight  
Brightness Curve  
•
•
Easy-to-Use EEPROM Calibration for Current,  
Intensity and Ambient Light Response Setting  
Internal EEPROM stores the data for backlight  
brightness and ambient light sensor calibration.  
Brightness can be calibrated during the backlight unit  
production so that all units produce the same  
brightness. EEPROM also stores the coefficients for  
the LED control equations and the default LED  
current value. LED current has 8–bit adjustment from  
0 to 60 mA.  
Seven LED Drivers with LED Fault  
(Short/open) Detection  
•
•
Eight-Bit LED Current Control  
Internal Thermal Protection and Backlight  
Safety Dimming Feature  
Two Wire, SMBus/ I2C-Compatible Control  
Interface  
•
The LP8543 has several safety and diagnostic  
features. Low-input voltage detection turns the chip  
off if the system gets stuck and battery fully  
discharges. Input voltage detection threshold is  
adjustable for different battery configurations.  
Thermal regulation reduces backlight brightness  
above a set temperature. LED fault detection reports  
open or LED short fault. Boost over-current fault  
detection protects the chip in case of over-current  
event.  
•
•
•
Low-Input Voltage Detection and Shutdown  
Minimum Number of External Components  
WQFN 24-Pin Package, 4 x 4 x 0.8 mm  
APPLICATIONS  
•
Medium Sized (>10 inches) LCD Display  
Backlight  
•
LED Lighting  
LP8543 is available in the WQFN 24-pin package.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009–2013, Texas Instruments Incorporated  
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中文翻译

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LP8543SQE/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP8543SQX/NOPB TI

完全替代

 适用于中型 LCD 背光的 SMBus/I2C 控制型 WLED 驱动器 | RTW |
LP8543SQ/NOPB TI

类似代替

 SMBus/I2C controlled WLED driver for Medium Sized LCD backlight 24-WQFN

与LP8543SQE/NOPB相关器件

型号 品牌 获取价格 描述 数据表
LP8543SQX TI

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 		SMBus/I2C Controlled WLED Driver for Medium-Sized LCD Backlight
LP8543SQX/NOPB TI

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 		适用于中型 LCD 背光的 SMBus/I2C 控制型 WLED 驱动器 | RTW |
LP8545 TI

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 		High-Efficiency LED Backlight Driver for Notebooks
LP8545SQ/NOPB TI

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 		适用于笔记本电脑的六通道高效 LED 背光驱动器，具有灵活的外部/内部 FET 控制 |
LP8545SQE/NOPB TI

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 		Six channel high-efficiency LED backlight driver for notebooks with flexible ext/int FET c
LP8545SQX TI

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 		High-Efficiency LED Backlight Driver for Notebooks
LP8545SQX/NOPB TI

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 		适用于笔记本电脑的六通道高效 LED 背光驱动器，具有灵活的外部/内部 FET 控制 |
LP8550 TI

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 		High-Efficiency LED Backlight Driver for Notebooks
LP8550TLE/NOPB TI

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 		用于笔记本电脑的高效 LED 背光驱动器 | YZR | 25 | -30 to 85
LP8550TLX/NOPB TI

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 		用于笔记本电脑的高效 LED 背光驱动器 | YZR | 25 | -30 to 85

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