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LM3632A

現行

具偏差供電和 1.5-A 閃光燈 LED 驅動器的單晶片背光

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產品規格表

LM3632A

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 29.5 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 92 Topology Boost, Current Sink, Multi-Channel Features Adjustable Switch Frequency, CABC, Direct PWM Dimming, Enable/Shutdown, I2C control, Integrated Switch, OVP, PWM control, Soft Start Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 29.5 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 92 Topology Boost, Current Sink, Multi-Channel Features Adjustable Switch Frequency, CABC, Direct PWM Dimming, Enable/Shutdown, I2C control, Integrated Switch, OVP, PWM control, Soft Start Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YFF) 30 5.71999999999999912 mm² (— mm × — mm)
  • Drives up to Two Strings of Typically Eight LEDs
    in Series
    • Integrated Backlight Boost with 29-V Maximum
      Output Voltage
    • Two Low-Side Constant-Current LED Drivers
      with 25-mA Maximum Output Current
  • Backlight Efficiency Up to 90%
  • 11-Bit Exponential or Linear Dimming
  • External PWM Input for CABC Backlight
    Operation
  • LCD Bias Efficiency > 85%
  • Programmable Positive LCD bias, 4-V to 6-V, 50-
    mA Maximum Output Current
  • Programmable Negative LCD bias, –4-V to –6-V,
    50-mA Maximum Output Current
  • 1.5-A Flash LED Boost
  • Flash Efficiency > 85%
  • 2.7-V to 5-V Input Voltage Range
  • Drives up to Two Strings of Typically Eight LEDs
    in Series
    • Integrated Backlight Boost with 29-V Maximum
      Output Voltage
    • Two Low-Side Constant-Current LED Drivers
      with 25-mA Maximum Output Current
  • Backlight Efficiency Up to 90%
  • 11-Bit Exponential or Linear Dimming
  • External PWM Input for CABC Backlight
    Operation
  • LCD Bias Efficiency > 85%
  • Programmable Positive LCD bias, 4-V to 6-V, 50-
    mA Maximum Output Current
  • Programmable Negative LCD bias, –4-V to –6-V,
    50-mA Maximum Output Current
  • 1.5-A Flash LED Boost
  • Flash Efficiency > 85%
  • 2.7-V to 5-V Input Voltage Range

The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation.

A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.

The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation.

A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM3632A Single-Chip Backlight With Bias Power and 1.5-A Flash LED Driver datasheet (Rev. A) PDF | HTML 2015/9/10
白皮書 Common LED Functions and LED Driver Design Considerations 2020/9/21
應用說明 Analog PWM Dimming in White-LED Drivers 2016/12/21

設計與開發

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驅動程式或資料庫

LM3532SW-LINUX — 適用於 LM3532 的 Linux 驅動程式

The Linux driver supports the LMU(Lighting Management Unit) devices for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.

 

Linux Mainline Status

Available in Linux Main line: No
Available through git.ti.com: (...)

支援產品和硬體
開發模組 (EVM) 的 GUI

SNVC182 — LM3632EVM GUI v1.0

支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YFF) 30 Ultra Librarian
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