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LM3508的基本参数
  • 制造厂商:TI
  • 产品类别:电源管理
  • 技术类目:LED 驱动器 - 背光 LED 驱动器
  • 功能描述:同步磁性恒流白光 LED 驱动器
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LM3508的产品详情:

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.

LM3508的优势和特性:
  • 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.

LM3508的参数(英文):
  • 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
  • LED current per channel (mA)
  • 30
  • Peak efficiency (%)
  • 85
  • Topology
  • Boost
  • Features
  • OVP
  • Operating temperature range (C)
  • -30 to 85
LM3508具体的完整产品型号参数及价格(美元):

LM3508的完整型号有:LM3508TL/NOPB、LM3508TLX/NOPB,以下是这些产品的关键参数及官网采购报价:

LM3508TL/NOPB,工作温度:-30 to 85,封装:DSBGA (YZR)-9,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNAGCU,TI官网LM3508TL/NOPB的批量USD价格:.386(1000+)

LM3508TLX/NOPB,工作温度:-30 to 85,封装:DSBGA (YZR)-9,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNAGCU,TI官网LM3508TLX/NOPB的批量USD价格:.186(1000+)

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LM3508的评估套件:

LM3508TLEV — LM3508TL 评估板

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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