面向升压型单信道大屏幕的白色LED驱动器 BD9489F

BD9489F是白色LED用高效率驱动器,适用于大屏幕液晶驱动器。BD9489F内置了可向光源(LED串联连接的阵列)提供适当电压的DC/DC转换器。BD9489F中内置了应对异常状态的几种保护功能。过电压保护(OVP: over voltage protection), 过电流检测(OCP: over current limit protection of DCDC), LED 过电流保护(LEDOCP: LED over current protection), 过升压保护(FBMAX: over boost protection)等。因此,可在更宽的输出电压条件及负载条件下使用。

型号Status封装包装数量最小独立包装数量包装形态RoHS
BD9489F-GE2供应中SOP1625002500TapingYes

BD9489F 数据手册 Data Sheet

技术特性
TopologyBoost
Number of Outputs1
Vin(Min.)[V]9.0
Vin(Max.)[V]35.0
Frequency(Max.)[MHz]0.8
LED Configuration1
Operating Temperature (Min.)[°C]-40
Operating Temperature (Max.)[°C]85
技术资料下载
产品特点
  • DCDC converter with current mode
  • As PWM=L, the retaining function of Vout, FB voltage
  • VOUT discharge function at shutdown
  • LED protection circuit (Over boost protection, LED OCP protection)
  • Over-voltage protection (OVP) for the output voltage Vout
  • Adjustable soft start
  • Adjustable oscillation frequency of DCDC
  • Wide range of analog dimming 0.2V to 3.0V
  • UVLO detection for the input voltage of the power stage
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