BD81A44MUV-M - Documentation

BD81A44MUV-M / BD81A44EFV-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.

White Paper

Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
In recent years, the advancing digitization of applications is expanding the number and role of electronic circuits, resulting in a considerable amount of man-hours spent on circuit design, from component selection during application development to board design and evaluation. This document discribes the solution for solving customer issues for each design flow with ROHM's support and tools.
ROHM Automotive Lighting Solutions
This paper proposes automotive lighting solutions that combine LED driver ICs required for LED lighting control along with compact high reliability LEDs. we will introduce the market needs for LED driver ICs, ROHM’s new LED driver IC, ROHM LEDs Optimized for automotive applications.

Application Note

Importance of Probe Calibration When Measuring Power: Deskew
Even when devices used for measurement are calibrated regularly, they will give incorrect results if calibration is not perfo rmed for the measurement environment. This application note explains the importance of probe calibration in power measurement environments.
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.
Impedance Characteristics of Bypass Capacitor
This application note focuses on the impedance characteristics of capacitors, and explains cautions for selecting bypass capacitors.
Part Explanation
For ICs