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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 2.2 x 2.5999999999999996
  • 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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類型 標題 日期
* Data sheet LM3632A Single-Chip Backlight With Bias Power and 1.5-A Flash LED Driver datasheet (Rev. A) PDF | HTML 2015年 9月 10日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Application note Analog PWM Dimming in White-LED Drivers 2016年 12月 21日
EVM User's guide LM3632A Evaluation Module User's Guide 2015年 3月 24日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM3632EVM — LM3632EVM 單晶片背光 + 偏壓供電 + 1.5A 閃光燈 LED 驅動器

The LM3632EVM aids in evaluation of the LM3632 Single-Chip Backlight + Bias Power + 1.5-A Flash LED Driver.

The LM3632 contains 3 major blocks:

  • A high efficiency backlight driver capable of driving 2 LED strings of up to 8 LEDs per string.
  • A set of positive and negative bias supplies of programmable (...)
使用指南: PDF
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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: (...)

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開發模組 (EVM) 的 GUI

SNVC182 — LM3632EVM GUI v1.0

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產品
背光 LED 驅動器
LM3632A — 具偏差供電和 1.5-A 閃光燈 LED 驅動器的單晶片背光
硬體開發
開發板
LM3632EVM — LM3632EVM 單晶片背光 + 偏壓供電 + 1.5A 閃光燈 LED 驅動器
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YFF) 30 Ultra Librarian
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