BD9479FV
（DCDC型）面向大屏幕的白色LED驱动器
BD9479FV
（DCDC型）面向大屏幕的白色LED驱动器
BD9479FV是白色LED用高效率驱动器，适用于大屏幕液晶驱动器。BD9479FV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。
BD9479FV中内置了应对异常状态的几种保护功能。过电压保护（OVP: over voltageprotection ） 、过电流检测（OCP: over current limitprotection of DCDC）、短路电路保护（SCP: short circuitprotection）、开路保护（open detection of LEDstring）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]
9
Vin(Max.)[V]
35
Number of Outputs
8
Switching Frequency (Max.)[MHz]
0.8
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
13.6x7.8 (t=2)
特点：
・ 8ch LED constant current driver (external PNP Tr Type)・ Maximum LED setting current 500mA (VREF pin setting)
・ Build-in DC/DC converter
・ Analog Dimming (Linear) function
・ Individual channel PWM Dimming function
・ LED protection function (Open Short protection) [PWM-independent Type]
・ Output short protection (OVP)
・ Built-in Timer latch function (CP)
・ Built-in under voltage Lockout function (UVLO)・over voltage protection (OVP)
・ Built-in FAIL indication function
・ Built-in OVP voltage Feedback function
・ Built-in PWM-independent soft start circuit
・ SSOP-B40 Package
