BD93942F
DC/DC型針對大面板幕的白光LED驅動器

BD93942F是白光LED用高效率驅動器，適用於大型面板液晶驅動器。BD93942F內建了針對光源（LED串聯連接的陣列）提供適當電壓的DC/DC轉換器。BD93942F中內建了應對異常狀態的幾種保護功能。過電壓保護(​​OVP: over voltageprotection) 、過電流檢測(OCP: over current limit protection of DC/DC) 、短路電路保護(SCP: short circuitprotection) 、開路保護(open detection of LED string) 等。因此，可在更寬的輸出電壓條件及負載條件下使用。

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Product Detail

 
料號 | BD93942F-GE2
狀態 | 推薦品
封裝 | SOP16
單位數量 | 2500
最小包裝數量 | 2500
包裝形式 | Taping
RoHS | Yes

規格:

Topology

Boost

Number of Outputs

4

Vin(Min.)[V]

9.0

Vin(Max.)[V]

35.0

Output Current(Max.)[mA]

150.0

Frequency(Max.)[MHz]

0.15

Dimming

Analog

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

功能:

  • 4ch LED constant current driver and DC/DC converter
  • Maximum LED Current: 150mA
  • LED Feedback Voltage: 0.45V (@ILED=150mA)
    so lower heat. Adjustable Feed Back Voltage
    by following LED Current setting.
  • ±2% LED current accuracy (ADIM=2.5V,
    when each LED is set to 100mA)
  • Analog current (Linear) dimming at ADIM pin
  • LED pin rating 60V
  • Individual detection and individual LED OFF for both
    open and short circuits
  • Built-in ISET pin short-circuit protection circuit
  • FET’s Gate (N pin) is driven by 5.8V swing
  • Built-in Vout discharge circuit for shutdown
  • Built-in Vout overvoltage protection (OVP) /
    reduced voltage protection (SCP) circuit
  • SOP16 package
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  • 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

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  • REACH SVHC Non-use Declaration