BD81A24MUF-M Series

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

Catalog

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

Part	Internal Switch(s)	Voltage - Supply (Max) [Max]	Grade	Type	Voltage - Supply (Min) [Min]	Dimming	Current - Output / Channel	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Topology	Package / Case	Number of Outputs	Frequency [Min]	Frequency [Max]	Qualification	Supplier Device Package
Rohm Semiconductor BD81A24MUF-ME2		35 V	Automotive	DC DC Regulator	4.5 V	PWM	120 mA	125 °C	-40 °C	Surface Mount Wettable Flank	Step-Down (Buck) Step-Up (Boost)	28-VFQFN Exposed Pad	4	200 kHz	2.2 MHz	AEC-Q100	VQFN28FV5050
Rohm Semiconductor BD81A24MUV-ME2		35 V	Automotive	DC DC Controller	4.5 V	PWM	120 mA	125 °C	-40 °C	Surface Mount	Step-Down (Buck) Step-Up (Boost)	28-VFQFN Exposed Pad	4	200 kHz	2.2 MHz	AEC-Q100	VQFN28SV5050

Catalog

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

Key Features

• Integrated Buck-Boost Current Mode DC/DC Controller, Integrated 4ch Current Driver for LED Drive, 10,000:1 PWM Dimming @100Hz, 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 (Grade 1)

Description

BD81A24MUV-M / BD81A24EFV-M (HTSSOP-B28 package) 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 (10,000:1 @100Hz dimming function) is possible by PWM input.