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背光 LED 驅動器

LM3699

現行

高效率白 LED 驅動器

立即訂購
產品規格表

LM3699

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 24 Type Inductive Switching frequency (max) (kHz) 1120 Duty cycle (max) (%) 94 LED current per channel (mA) 20.2 Peak efficiency (%) 90 Topology Boost Features CABC, Direct PWM Dimming, Enable/Shutdown, Integrated Switch, OVP, PWM control, Synchronous Rectification, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 24 Type Inductive Switching frequency (max) (kHz) 1120 Duty cycle (max) (%) 94 LED current per channel (mA) 20.2 Peak efficiency (%) 90 Topology Boost Features CABC, Direct PWM Dimming, Enable/Shutdown, Integrated Switch, OVP, PWM control, Synchronous Rectification, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
DSBGA (YFQ) 12 2.52000000000000018 mm² 1.8 x 1.4000000000000001
  • Drives Parallel High-Voltage LED Strings
    for Display or Keypad Lighting
  • Boost Converter up to 90% Efficiency
  • Four User-Selectable Full-Scale Current Settings
    (20.2 mA, 18.6 mA, 17.0 mA, 15.4 mA)
  • Quick-Dimming Enable Terminal (ILOW)
  • Simple PWM Duty Cycle Control
  • 24-V Overvoltage Protection Threshold
  • Fixed 1-MHz Switching Frequency
  • Integrated 1-A/40-V MOSFET
  • Three Current Sink Terminals
  • Adaptive Boost Output to LED Voltages
  • Thermal Shutdown Protection
  • 29-mm2 Total Solution Size
  • Drives Parallel High-Voltage LED Strings
    for Display or Keypad Lighting
  • Boost Converter up to 90% Efficiency
  • Four User-Selectable Full-Scale Current Settings
    (20.2 mA, 18.6 mA, 17.0 mA, 15.4 mA)
  • Quick-Dimming Enable Terminal (ILOW)
  • Simple PWM Duty Cycle Control
  • 24-V Overvoltage Protection Threshold
  • Fixed 1-MHz Switching Frequency
  • Integrated 1-A/40-V MOSFET
  • Three Current Sink Terminals
  • Adaptive Boost Output to LED Voltages
  • Thermal Shutdown Protection
  • 29-mm2 Total Solution Size

The LM3699 is a three-string, high-efficiency, PWM-controlled power source for display backlight or keypad LEDs in smartphone handsets. The high-voltage inductive boost converter with integrated 1-A, 40-V MOSFET provides the power for three series LED strings. The boost output automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.

The ILOW terminal provides a method to quickly reduce LED brightness during camera flash operation.

The LM3699 has integrated overvoltage, overcurrent, and thermal protection.

The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C temperature range.

The LM3699 is a three-string, high-efficiency, PWM-controlled power source for display backlight or keypad LEDs in smartphone handsets. The high-voltage inductive boost converter with integrated 1-A, 40-V MOSFET provides the power for three series LED strings. The boost output automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.

The ILOW terminal provides a method to quickly reduce LED brightness during camera flash operation.

The LM3699 has integrated overvoltage, overcurrent, and thermal protection.

The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C temperature range.
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類型 標題 日期
* Data sheet LM3699 High-Efficiency White LED Driver datasheet (Rev. A) PDF | HTML 2014年 3月 28日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日

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