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TPS61181A

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适用于笔记本电脑应用的六串 LED 驱动器

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TPS61181A

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产品详情

Number of channels 6 Vin (min) (V) 5 Vin (max) (V) 24 Vout (min) (V) 5 Vout (max) (V) 39 Type Inductive Switching frequency (max) (kHz) 1000 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 90 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 6 Vin (min) (V) 5 Vin (max) (V) 24 Vout (min) (V) 5 Vout (max) (V) 39 Type Inductive Switching frequency (max) (kHz) 1000 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 90 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
WQFN (RTE) 16 9 mm² (3 mm × 3 mm)
  • 4.5-V to 24-V Input Voltage
  • 38-V Maximum Output Voltage
  • Integrated 1.5-A/40-V MOSFET
  • 1-MHz Switching Frequency
  • Adaptive Boost Output to WLED Voltages
  • Small External Components
  • Integrated Loop Compensation
  • Six Current Sinks of 30 mA
  • Up to 10 WLED in Series
  • 1% Typical Current Matching and Accuracy
  • Up to 1000:1 PWM Brightness Dimming
  • Minimized Output Ripple Under PWM Dimming
  • Driver for Input/Output Isolation PFET
  • True Shutdown
  • Overvoltage Protection
  • WLED Open and Short Protection
  • Built-in Soft Start
  • 4.5-V to 24-V Input Voltage
  • 38-V Maximum Output Voltage
  • Integrated 1.5-A/40-V MOSFET
  • 1-MHz Switching Frequency
  • Adaptive Boost Output to WLED Voltages
  • Small External Components
  • Integrated Loop Compensation
  • Six Current Sinks of 30 mA
  • Up to 10 WLED in Series
  • 1% Typical Current Matching and Accuracy
  • Up to 1000:1 PWM Brightness Dimming
  • Minimized Output Ripple Under PWM Dimming
  • Driver for Input/Output Isolation PFET
  • True Shutdown
  • Overvoltage Protection
  • WLED Open and Short Protection
  • Built-in Soft Start

The TPS61181A device provides highly integrated solutions for media-size LCD backlighting. The six current sink regulators provide high-precision current regulation and matching. In total, the device can support up to 60 WLEDs.

The devices support pulse width modulation (PWM) brightness dimming. During dimming, the WLED current is turned on/off at the duty cycle and frequency, determined by the PWM signal input to the DCRTL pin. The TPS61181A device is designed to minimize the output AC ripple across a wide dimming duty cycle and frequency range and also reduces the audible noise from the output ceramic capacitors.

The TPS61181A device provides a driver output for an external PFET connected between the input and inductor. During short circuit or overcurrent conditions, the device turns off the external PFET and disconnects the battery from the WLEDs. The PFET is also turned off during device shutdown (thereby giving shutdown) to prevent any leakage current from the battery. The device integrates overvoltage protection, soft-start and thermal shutdown and has a built-in linear regulator for the device supply.

For all available packages, see the orderable addendum at the end of the data sheet.

The TPS61181A device provides highly integrated solutions for media-size LCD backlighting. The six current sink regulators provide high-precision current regulation and matching. In total, the device can support up to 60 WLEDs.

The devices support pulse width modulation (PWM) brightness dimming. During dimming, the WLED current is turned on/off at the duty cycle and frequency, determined by the PWM signal input to the DCRTL pin. The TPS61181A device is designed to minimize the output AC ripple across a wide dimming duty cycle and frequency range and also reduces the audible noise from the output ceramic capacitors.

The TPS61181A device provides a driver output for an external PFET connected between the input and inductor. During short circuit or overcurrent conditions, the device turns off the external PFET and disconnects the battery from the WLEDs. The PFET is also turned off during device shutdown (thereby giving shutdown) to prevent any leakage current from the battery. The device integrates overvoltage protection, soft-start and thermal shutdown and has a built-in linear regulator for the device supply.

For all available packages, see the orderable addendum at the end of the data sheet.

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS61181A White-LED Driver For Notebook Display 数据表 (Rev. B) PDF | HTML 2016-9-30
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020-9-21
应用手册 Some Guidelines and Tips for the LED Driver Application 2019-8-14
应用手册 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018-12-11
模拟设计期刊 背景照明平板电脑 2011-6-17

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评估板

SN65DSI85EVM — SN65DSI85 双通道 MIPI® DSI 转双链路 FlatLink™ LVDS 桥接器评估模块

SN65DSI85EVM 评估模块 (EVM) 是一款印刷电路板 (PCB)，可帮助客户在系统硬件中实现 SN65DSI85 器件。此 EVM 还可用作使用 SN65DSI85 的实现的硬件参考设计。SN65DSI85EVM 包括 DSI 输入和 LVDS 输出信号的板载连接器。  这些连接器适用于将符合 MIPI® DPHY 的 DSI 源和 LVDS 面板连接至 EVM。
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评估板

TPS61181AEVM-259 — 用于笔记本电脑应用的 TPS61181A 6 串 LED 驱动器的评估模块

TPS61181AEVM-259 用户指南描述了 TPS6118xEVM-259 评估模块 (EVM) 的特性、操作和使用。该 EVM 包含德州仪器 (TI) 基于 TPS61181 (-001 build) 或 TPS61182 (-002 build) 或 TPS61181A (-003 build) 的 WLED 电源解决方案，每种解决方案使用一个单独的电感器升压转换器提供多达 6 个独立调节的电流输出。这种电流输出非常适合驱动笔记本电脑/膝上型电脑的 WLED 背光。单独的 EVM WLEDEVM-260 包含 8 个 10 串 WLED，并通过 14 引脚带状光缆连接到 (...)

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封装 引脚 CAD 符号、封装和 3D 模型
WQFN (RTE) 16 Ultra Librarian
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