ROHM Semiconductor BD8381AEFV-M Single-Chip LED Drivers
ROHM BD8381AEFV-M Single-Chip LED Drivers are designed for automotive headlamp and daytime running lamp (DRL) use. ROHM BD8381AEFV-M features a single-chip design that includes the entire range of functionality needed to serve as an LED driver circuit. The BD8381AEFV-M provides pulse width modulation (PWM) without a microcontroller by incorporating a built-in oscillator circuit. This LED Driver also offers a range of protective functionality to detect headlamp faults such as LED short and open states. This allows it to better meet the automotive market's need for a high level of reliability. An absolute maximum voltage of 50V gives the product sufficient dielectric strength to withstand battery voltage fluctuations.
Features
- Single-chip design eliminates the need for additional discrete components
- Integrated buck-boost current-mode DC/DC controller
- Built-in CR timer for PWM brightness
- Built-in protection functions (undervoltage lockout, overvoltage protection, overcurrent protection, short-circuit protection, thermal shutdown)
- LED error status detection function (OPEN/SHORT)
- 5.0V to 30V input supply voltage range
- -40°C to +125°C operating temperature range
- 9.7mm x 6.5mm x 1.0mm HTSSOP-B28 package
Applications
- Automotive LED headlamps
- Daytime running lights
Block Diagram
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Opublikowano: 2016-10-06
| Zaktualizowano: 2022-03-11