BD81A44MUV-M
BD81A44MUV-M is 4ch White LED Driver manufactured by ROHM.
4ch White LED Driver Built-in Current Driver Buck-Boost and Boost DC/DC Converter for Automotive
BD81A44EFV-M BD81A44MUV-M
General Description
Key Specifications
BD81A44EFV-M / BD81A44MUV-M is a white LED driver with the capability of withstanding high input voltage (maximum 35 V). This driver has 4ch constantcurrent drivers in 1-chip, where each channel can draw up to 120 m A (Max), and it is suitable for high illumination LED drive. Furthermore, a buck-boost current mode DC/DC converter is also built to achieve stable operation during power voltage fluctuation. Light modulation (10,000:1@100 Hz dimming function) is possible by PWM input.
Features
- Operating Input Voltage Range
4.5 V to 35 V
- Output LED Current Accuracy
±3.0 %@50 m A
- DC/DC Oscillation Frequency 200 k Hz to 2200 k Hz
- Operating Temperature
-40 °C to +125 °C
- LED Maximum Output Current
120 m A/ch
- LED Maximum Dimming Ratio 10,000:1@100 Hz
- PWM Minimum Pulse Width
1.0 µs
Packages VQFN28SV5050 HTSSOP-B28
W (Typ) x D (Typ) x H (Max) 5.0 mm x 5.0 mm x 1.0 mm 9.7 mm x 6.4 mm x 1.0 mm
- AEC-Q100 Qualified- 1
- 4ch Current Driver for LED Drive
- Buck-Boost Current Mode DC/DC Converter
- Control DC/DC Converter Oscillation Frequency by
External Synchronized Signal
- LSI Protection Function (UVLO, OVP, TSD, OCP, SCP)
- LED Abnormality Detection Function (Open/Short)
- VOUT Discharge Function (Buck-Boost Structure
Limitation)
VQFN28SV5050...
