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。

Data Sheet 購買 *
* 本產品是標準級的產品。
本產品不建議使用的車載設備。

Product Detail

 
料號 | BD9479FV-GE2
狀態 | 推薦品
封裝 | SSOP-B40
單位數量 | 2000
最小包裝數量 | 2000
包裝形式 | Taping
RoHS | Yes

規格:

Topology

Boost

Number of Outputs

8

Vin(Min.)[V]

9.0

Vin(Max.)[V]

35.0

Frequency(Max.)[MHz]

0.8

Integrated FET

No

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

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

Design Resources

 

Documents

White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
  • ROHM Automotive Lighting Solutions

Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Thermal Resistance

Tools

2D/3D/CAD

  • SSOP-B40 Footprint / Symbol
  • SSOP-B40 3D STEP Data

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)