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RT9300A/RT9300B

4通道低压差恒流源

RT9300A/RT9300B
New

RT9300A/B 是用于替代传统白光 LED 应用中的电流镇定电阻的高性能低压差 LED 驱动器，它使用一只内部电阻对4只 LED 的电流进行设定，匹配误差低于5%。与使用电阻进行镇流相比，RT9300A/B 容许在更宽的供电电压范围内获得更低的电流变化范围、极低的电压降，在有的应用中还可获得效率的最大化。当流过每个 LED 的电流为 20mA/15mA 时，RT9300A/B 仅需 60mV/45mV 的电压降落空间即可获得很好的 LED 亮度一致性。

应用

  • Next-Generation Wireless Handsets
  • PDAs, Palmtops, and Handy Terminals
  • Digital Cameras, Camcorders
  • Battery-Powered Equipment

主要规格

RT9300A RT9300B
Status NRND NRND
Vin (min) (V) 2.5 2.5
Vin (max) (V) 5.5 5.5
Number of LEDs (max) (pcs) 4 4
Iout (max)/channel (mA) 15 20
Dimming Control PWM PWM
Topology Current Source Current Source
Features Enable Input;UVP Enable Input;UVP
Package Type SOT-26 SOT-26

关键特性

  • 20/15mA 输出时的电压降仅 60/45mV

  • 5% 的 LED 电流一致性

  • 极简单的 LED 电流控制方法

  • 供电电压范围为 2.5V~5.5V

  • 过热关机保护

  • 符合 RoHS 规范，不含卤素

Datasheet

DS9300AB-05.pdf

Datasheet

DS9300AB-05.pdf

RT9300AGE
Package Type:SOT-26
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