BD9479FV
(DCDC 型)大螢幕用白光LED 驅動器
BD9479FV
(DCDC 型)大螢幕用白光LED 驅動器
BD9479FV為白光LED用高效率驅動器、並設計為大螢幕的液晶驅動器專用。BD9479FV內建可供應給光源(LED直列連接陣列)適當電壓的DCDC轉換器。
BD9479FV並內建數個在異常狀態下的保護功能。例如過電壓保護(OVP: over voltageprotection )、過電流檢測(OCP: over current limitprotection of DCDC)、短路保護(SCP: short circuitprotection)、開路保護(open detection of LEDstring)等。因此、可在廣泛的輸出電壓條件及負載條件下使用。
Product Detail
規格:
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=2.0)
功能:
・ 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