ROHM Semiconductor BD1837 12-Channel LED Drivers
ROHM Semiconductor BD1837 12-Channel LED Driver ICs provide an integrated solution for automotive and consumer electronic LED lighting applications. These serial input-controlled constant current drivers offer 6-Bit LED brightness adjustment on each channel. Global Pulse Width Modulation (PWM) allows 0.1-100% dimming on all outputs simultaneously on the ROHM BD18377EFV-M. Selective PWM allows 0.2-99.2% dimming to specified outputs on the BD18378EFV-M. Protection features such as open, short load, and overtemperature detection increase longevity and reliability. The settings of all internal registers can be read out to verify written information at any time.
Features
- AEC-Q100 qualified
- Operating temperature grade 2
- 3V to 5.5V input voltage range
- 3.5% output current accuracy at 30mA
- Current output up to 50mA per output channel
- 4-line SPI control
- Diagnostic of all PWM inputs
- Programmable output mapping to each PWM input
- 6-bit LED brightness adjustment on each channel
- Diagnostic output on LED OPEN and SHORT for each channel
- Overtemperature protection and thermal feedback
- Read-back of all register settings
- Outputs can be connected in parallel to achieve more than 50mA into the load
- Slew rate limited switching reduces radiated noise (EMI)
- Daisy chain compatible
- -40°C to +105°C operating temperature range
Applications
- Automotive illumination
- Consumer electronics illumination
- Ambient lighting
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Veröffentlichungsdatum: 2016-08-01
| Aktualisiert: 2022-03-11