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CAT4238TD ( 驱动器 )

价格梯度

  • 数量
  • 含税单价
  • 1~25只:
  • 6.5000元
  • 26~100只:
  • 5.5000元
  • 101~500只:
  • 5.0000元
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  • 商品编号:
    A01AJ5785
  • 商品型号:
    CAT4238TD
  • 品牌产地:
  • 生产批号:
  • 浏览次数:
    27612次
  • 30天内已售
    出:93
  • 商品名称:
    驱动器
  • 封装规格:
  • PDF资料:
  • 所  在  地:
    浙江省 • 杭州
  • 收藏人气:
    95
  • 库      存:
    此商品目前处于缺货状态
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高效率10 LED升压驱动器

The CAT4238 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor R1. LED currents up to 40mA can be supported over a wide range of input supply voltages up to 5.5V, making the device ideal for battery-powered applications. The CAT4238 high-voltage output stage is perfect for driving mid-size and large panel displays containing up to ten white LEDs in series.

LED dimming can be done by using a DC voltage, a logic signal, or a pulse width modulation (PWM) signal. The shutdown input pin allows the device to be placed in power-down mode with 'zero' quiescent current.

In addition to thermal protection and overload current limiting, the device also enters a very low power operating mode during 'Open LED' fault conditions. The device is housed in a low profile (1mm max height) 5-lead thin SOT23 package for space critical applications.