White LED Driver for large LCD Panels (DCDC Converter type) - BD93941EFV

BD93941EFV is a high efficiency driver for white LEDs and designed for large LCDs. These ICs are built-in a boost DCDC converters that employ an array of LEDs as the light source. BD93941EFV has some protect function against fault conditions, such as the over-voltage protection (OVP), the over current limit protection of DCDC (OCP), the short circuit protection (SCP), the open detection of LED string. Therefore BD93941EFV is available for the fail-safe design over a wide range output voltage.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
número de peça
Estado de Condição
Quantidade Unidade
Quantidade mínima Package
tipo de embalagem
BD93941EFV-E2 Active HTSSOP-B20 2500 2500 Taping sim
Topology Boost
Number of Outputs 4
Vin(Min.)[V] 9.0
Vin(Max.)[V] 35.0
Output Current(Max.)[mA] 200.0
Frequency(Max.)[MHz] 0.15
Dimming PWM
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
    • 4ch LED constant current driver and DC/DC converter
    • Maximum LED Current: 200mA
    • LED Feedback Voltage: 0.37V (@ADIM=2.5V)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
    • Set Soft-Start time by external capacitor.
    • 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
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Dados técnicos
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.