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LM3508

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同步磁性恒流白光 LED 驱动器

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数据表

LM3508

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数据表 立即订购

产品详情

Number of channels 1 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 10 Vout (max) (V) 17.5 Type Inductive Switching frequency (max) (kHz) 850 Duty cycle (max) (%) 91 LED current per channel (mA) 30 Peak efficiency (%) 85 Topology Boost Features OVP Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 1 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 10 Vout (max) (V) 17.5 Type Inductive Switching frequency (max) (kHz) 850 Duty cycle (max) (%) 91 LED current per channel (mA) 30 Peak efficiency (%) 85 Topology Boost Features OVP Operating temperature range (°C) -30 to 85 Rating Catalog
DSBGA (YZR) 9 3.0625 mm² 1.75 x 1.75
  • Drives 4 Series White LEDs with up to 30mA
  • >80% Peak Efficiency
  • Up to 100kHz PWM Brightness Control
  • Accurate ±5% LED Current Regulation across VIN range
  • Internal Synchronous PFET (No Schottky Diode Required)
  • True Shutdown Isolation
  • Output Short-Circuit Protection
  • 17.5V Over-Voltage Protection
  • Internal Soft-Start Eliminates Inrush Current
  • Wide Input Voltage Range: 2.7V to 5.5V
  • 850kHz Fixed Frequency Operation
  • Low Profile 9-Bump DSBGA Package (1.514mm x 1.514mm x 0.6mm)

All trademarks are the property of their respective owners.

  • Drives 4 Series White LEDs with up to 30mA
  • >80% Peak Efficiency
  • Up to 100kHz PWM Brightness Control
  • Accurate ±5% LED Current Regulation across VIN range
  • Internal Synchronous PFET (No Schottky Diode Required)
  • True Shutdown Isolation
  • Output Short-Circuit Protection
  • 17.5V Over-Voltage Protection
  • Internal Soft-Start Eliminates Inrush Current
  • Wide Input Voltage Range: 2.7V to 5.5V
  • 850kHz Fixed Frequency Operation
  • Low Profile 9-Bump DSBGA Package (1.514mm x 1.514mm x 0.6mm)

All trademarks are the property of their respective owners.

The LM3508 is a synchronous boost converter (no external Schottky diode required) that provides a constant current output. It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery. A single low power external resistor is used to set the maximum LED current. The LED current can be adjusted by applying a PWM signal of up to 100kHz to the DIM pin. Internal soft-start circuitry is designed to eliminate high in-rush current at start-up. For maximum safety, the device features an advanced short-circuit protection when the output is shorted to ground. Additionally, over-voltage protection and an 850kHz switching frequency allow for the use of small, low-cost output capacitors with lower voltage ratings. During shutdown, the output is disconnected from the input preventing a leakage current path through the LEDs to ground. The LM3508 is available in a tiny 9-bump chip-scale DSBGA package.

The LM3508 is a synchronous boost converter (no external Schottky diode required) that provides a constant current output. It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery. A single low power external resistor is used to set the maximum LED current. The LED current can be adjusted by applying a PWM signal of up to 100kHz to the DIM pin. Internal soft-start circuitry is designed to eliminate high in-rush current at start-up. For maximum safety, the device features an advanced short-circuit protection when the output is shorted to ground. Additionally, over-voltage protection and an 850kHz switching frequency allow for the use of small, low-cost output capacitors with lower voltage ratings. During shutdown, the output is disconnected from the input preventing a leakage current path through the LEDs to ground. The LM3508 is available in a tiny 9-bump chip-scale DSBGA package.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3508 Synchronous Magnetic Constant Current White LED Driver 数据表 (Rev. C) 2013年 5月 3日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
应用手册 Analog PWM Dimming in White-LED Drivers 2016年 12月 21日
EVM 用户指南 AN-1593 LM3508 Evaluation Board 2007年 6月 4日

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The LM3508 is a synchronous boost converter (no external Schottky diode required) that provides a constant current output. It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery. A single low power external resistor is used to set the maximum LED current. The (...)

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包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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