BD9409F
升压型单通道 面向大屏幕的白色LED驱动器
BD9409F
升压型单通道 面向大屏幕的白色LED驱动器
BD9409F是白色LED用高效率驱动器,适用于大屏幕液晶驱动器。BD9409F内置了可向光源(LED串联连接的阵列)提供适当电压的DCDC转换器。BD9409F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。
主要规格
特性:
Topology
Boost
Vin(Min.)[V]
11.5
Vin(Max.)[V]
35
Number of Outputs
1
Switching Frequency (Max.)[MHz]
1
Dimming
DC / PWM
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
105
Package Size [mm]
10x6.2 (t=1.71)
特点:
- DCDC converter with current mode
- LED protection circuit
(Over boost protection(FB_H), LED OCP protection) - Over-voltage protection (OVP) for the output voltage Vout
- Adjustable soft start
- Adjustable oscillation frequency of DCDC
- UVLO detection for the input voltage of the power stage
- PWM Dimming and MS Dimming.