Constant Current LED Driver with 64 Dimming Steps for up to 4 LEDs - BD1754HFN

The multi-level brightness control LED works as a constant current driver in 64 steps, so that the driving current can be adjusted finely. BD1754HFN is best suited to turn on LEDs that require high-accuracy LED brightness control.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD1754HFN-TR Active HSON8 3000 3000 Taping Yes
Topology Constant Current
Number of Outputs 4
Dimming 6-Bit DC
Analog Dimming Steps 64
Per Channel Drive(Max.)[mA] 64.0
Ch to Ch Accuracy(Typ.)[±%] 0.5
Vout(Max.)[V] 7.0
Data Input 1-wire
Data Transfer Rate(Max.)[MHz] 2.8
Data Vin(Min.)[V] 0.6
Data Vin(Max.)[V] 1.4
LED Open Detection No
Vin(Min.)[V] 2.7
Vin(Max.)[V] 5.5
Operating Temperature (Min.)[°C] -30
Operating Temperature (Max.)[°C] 85
  • ・Current regulation for LED up to 4 parallels
    ・Adjustable constant current 64 steps
    ・High accuracy and matching of each current channel (0.5% Typ)
    ・Brightness control via a 1-wire digital control interface (UPIC)
Pin Configuration:
Pin Configration
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Technical Data
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.