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背光 LED 驅動器

LM2756

現行

具 32 指數調光步進的多顯示無電感器 LED 驅動器 (採用 micro SMD)

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產品規格表

LM2756

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 8 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 6 Type Capacitive Switching frequency (max) (kHz) 1600 Duty cycle (max) (%) 100 LED current per channel (mA) 30 Peak efficiency (%) 92 Topology Boost, Current Sink Features I2C control Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 8 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 6 Type Capacitive Switching frequency (max) (kHz) 1600 Duty cycle (max) (%) 100 LED current per channel (mA) 30 Peak efficiency (%) 92 Topology Boost, Current Sink Features I2C control Operating temperature range (°C) -30 to 85 Rating Catalog
DSBGA (YFQ) 20 3.96 mm² 2.2 x 1.8
  • Drives up to 8 LEDs with up to 30mA of Diode Current Each
  • 32 Exponential Dimming Steps with 800:1 Dimming Ratio for Group A (Up to 6 LEDs)
  • 8 Linear Dimming States for Groups B (Up to 3 LEDs) and D1C (1 LED)
  • Programmable Auto-Dimming Function
  • 3 Independently Controlled LED Groups Via I2C Compatible Interface
  • Up to 90% Efficiency
  • Total Solution Size < 21mm2
  • Low Profile 20 Bump DSBGA Package (1.615mm × 2.015mm × 0.6mm)
  • 0.4% Accurate Current Matching
  • Internal Soft-Start Limits Inrush Current
  • True Shutdown Isolation for LED’s
  • Wide Input Voltage Range (2.7V to 5.5V)
  • Active High Hardware Enable

All trademarks are the property of their respective owners.

  • Drives up to 8 LEDs with up to 30mA of Diode Current Each
  • 32 Exponential Dimming Steps with 800:1 Dimming Ratio for Group A (Up to 6 LEDs)
  • 8 Linear Dimming States for Groups B (Up to 3 LEDs) and D1C (1 LED)
  • Programmable Auto-Dimming Function
  • 3 Independently Controlled LED Groups Via I2C Compatible Interface
  • Up to 90% Efficiency
  • Total Solution Size < 21mm2
  • Low Profile 20 Bump DSBGA Package (1.615mm × 2.015mm × 0.6mm)
  • 0.4% Accurate Current Matching
  • Internal Soft-Start Limits Inrush Current
  • True Shutdown Isolation for LED’s
  • Wide Input Voltage Range (2.7V to 5.5V)
  • Active High Hardware Enable

All trademarks are the property of their respective owners.

The LM2756 is a highly integrated, switched-capacitor, multi-display LED driver that can drive up to 8 LEDs in parallel with a total output current of 180mA. Regulated internal current sources deliver excellent current and brightness matching in all LEDs.

The LED driver current sinks are split into three independently controlled groups. The primary group (Group A) can be configured to drive four, five or six LEDs for use in the main phone display, while the secondary group (Group B) can be configured to drive one, two or three LEDs for driving secondary displays, keypads and/or indicator LEDs. An additional driver, D1C, is provided for additional indicator lighting functions.

The device provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in Pass-Mode. The proper gain for maintaining current regulation is chosen, based on LED forward voltage, so that efficiency is maximized over the input voltage range.

The LM2756 is available in TI's tiny 20-bump, 0.4mm pitch, thin DSBGA package.

The LM2756 is a highly integrated, switched-capacitor, multi-display LED driver that can drive up to 8 LEDs in parallel with a total output current of 180mA. Regulated internal current sources deliver excellent current and brightness matching in all LEDs.

The LED driver current sinks are split into three independently controlled groups. The primary group (Group A) can be configured to drive four, five or six LEDs for use in the main phone display, while the secondary group (Group B) can be configured to drive one, two or three LEDs for driving secondary displays, keypads and/or indicator LEDs. An additional driver, D1C, is provided for additional indicator lighting functions.

The device provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in Pass-Mode. The proper gain for maintaining current regulation is chosen, based on LED forward voltage, so that efficiency is maximized over the input voltage range.

The LM2756 is available in TI's tiny 20-bump, 0.4mm pitch, thin DSBGA package.
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類型 標題 日期
* Data sheet Multi-Display Inductorless LED Driver w/32 Exponential Dimming Steps in DSBGA datasheet (Rev. C) 2013年 5月 1日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Designing Energy-Efficient Handheld Illum Solutions (Rev. A) 2013年 4月 30日

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LM2756TMEV — 具有 32 指數調光步進 (採用微型 SMD 封裝) 的多顯示無電感器 LED 驅動器

The LM2756 is a highly integrated, switched-capacitor, multi-display LED driver that can drive up to 8 LEDs in parallel with a total output current of 180mA. Regulated internal current sources deliver excellent current and brightness matching in all LEDs

The LM2756 is a highly integrated, (...)

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