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LM3532 - 产品图解：
LM3532-High Efficiency White LED Driver with Programmable Ambient Light Sensing Capability and I2C Compati
LM3532-背光-LED驱动器-电源管理
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TI产品 - LM3532介绍

LM3532 - High Efficiency White LED Driver with Programmable Ambient Light Sensing Capability and I2C Compati

LM3532是TI德州仪器公司的一款背光产品，LM3532是High Efficiency White LED Driver with Programmable Ambient Light Sensing Capability and I2C Compati，本站介绍了LM3532的封装应用图解、特点和优点、功能等，并给出了与LM3532相关的TI元器件型号供参考。

LM3532 - High Efficiency White LED Driver with Programmable Ambient Light Sensing Capability and I2C Compati - 背光 - LED驱动器 - 德州仪器

产品特性
  • Drives up to 3 Parallel High-Voltage LED Strings at 40 V Each With up to 90% Efficiency
  • 0.4% Typical Current Matching Between Strings
  • 256 Level Logarithmic and Linear Brightness Control With 14-Bit Equivalent Dimming
  • I2C-Compatible Interface
  • Direct Read Back of Ambient Light Sensor Via 8-bit ADC
  • Programmable Dual Ambient Light Sensor Inputs With Internal Sensor Gain Selection
  • Dual External PWM Inputs for LED Brightness Adjustment
  • Independent Current String Brightness Control
  • Programmable LED Current Ramp Rates
  • 40-V Overvoltage Protection
  • 1-A Typical Current Limit
产品应用
  • Power Source for White LED Backlit LCD Displays
  • Programmable Keypad Backlight
产品说明

The LM3532 is a 500-kHz fixed frequency asynchronous boost converter which provides the power for 3 high-voltage, low-side current sinks. The device is programmable over an I2C-compatible interface and has independent current control for all three channels. The adaptive current regulation method allows for different LED currents in each current sink thus allowing for a wide variety of backlight and keypad applications.

The main features of the LM3532 include dual ambient light sensor inputs each with 32 internal voltage setting resistors, 8-bit logarithmic and linear brightness control, dual external PWM brightness control inputs, and up to 1000:1 dimming ratio with programmable fade in and fade out settings.

The LM3532 is available in a 16-pin, 0.4-mm pitch thin DSBGA package. The device operates over a 2.7-V to 5.5-V input voltage range and the −40°C to +85°C temperature range.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (MAX)
LM3532DSBGA (16)1.87 mm x 1.77 mm
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