4ch White LED Driver with Buck-Boost (40 LED Maximum) - BD81A24MUV-M (New)

BD81A24MUV-M is a white LED driver with the capability of withstanding high input voltage (35V Max). This driver has 4ch constant-current drivers integrated in 1-chip, where each channel can draw up to 120mA (Max), which is also suitable for high illumination LED drive. Furthermore, a buck-boost current mode DC/DC controller is also integrated to achieve stable operation during power voltage fluctuation. Light modulation (5000: 1 dimming function) is possible by PWM input.

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Part number
Unit Quantity
Minimum Package Quantity
Packing Type
Constitution Materials List
BD81A24MUV-ME2 Active VQFN28SV5050 2500 2500 Taping inquiry Yes
Topology Buck-Boost
Number of Outputs 4
Vin(Min.)[V] 4.5
Vin(Max.)[V] 35.0
Output Current(Max.)[mA] 480.0
Vout(Max.)[V] 40.0
Frequency(Max.)[MHz] 2.2
LED Configuration 4 x 10
Integrated FET No
Dimming PWM
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 125
    • Integrated Buck-Boost Current Mode DC/DC Controller
    • Integrated 4ch Current Driver for LED Drive
    • 5000: 1 PWM Dimming @200Hz
    • External Switching Frequency Synchronization
    • Built-In Protection Function (UVLO, OVP, OCP, SCP)
    • LED Abnormality Detection Function (Open/Short)
    • Integrated VOUT Discharge Function
      (Buck-Boost or Buck Structure Limitation)
    • AEC-Q100 Qualified
ROHM Semiconductor reserves the right to change the specifications at any time.
Technical Data
Application Note

Thermal Resistance