製品概要
概要
The LDLL16EN is a monolithic 16-channel LED driver designed for automotive exterior and interior LED lighting applications. It guarantees up to 20 V output driving capability, allowing users to connect several LEDs in series, and features 16 regulated current sinkers able to provide from 6.3 mA to 100 mA programmable current to drive LEDs.
The LDLL16EN integrates a robust purely automotive CAN FD light compatible serial communication interface which allows a high rate data transmission (up to 1 Mbit/s) and uses CAN FD structure for long frames.
The device integrates a protocol handler, so no additional external components are needed to facilitate communication with the commander ECU, and a RX/TX interface for communication with external transceiver sharable among several devices (up to 6).
The LDLL16EN can operate in bus mode using CAN FD light compatible interface or in stand-alone/fail-safe mode using internal few time programmable (FTP) memory registers.
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特徴
- AEC-Q100 qualified
- 一般
- CAN FD light compatible serial interface, protocol handler - CAN FD light is standardized in ISO 11898-1:2024 annex A
- RX/TX interface - for communication with external shared transceiver
- High precision oscillator integrated - no external quartz required
- QFN32L 5x5 with wettable flanks and exposed pad
- Timeout watchdog with fail-safe operation
- Low standby current
- Standalone and bus mode operation
- 1 direct drive input - for two function groups supporting ASIL requirements
- Multifunction capability - up to two different lighting functions in one IC
- Widest configurability by embedded non-volatile and volatile memories
- Battery supply voltage range from 5 V to 40 V
- Linear regulators
- Operating temperature range from -40 °C to 150 °C
- 16 constant current output channels - low-side configuration
- Output current from 6.3 mA to 100 mA - parallelable outputs
- Output voltage up to 20 V
- Current setting per channel by 8-bit DAC
- Analogue dimming, 8-bit PWM channel individual exponential brightness control and 8-bit global PWM dimming
- Programmable PWM frequency
- Optimized turn on/off time, gradual outputs delay and dithered clock - for better EMC performances
- Protection and diagnostic
- Integrated 8-bit ADC - for full and flexible diagnostic
- 1 dedicated line for fault bus
- Temperature warning (one threshold)
- Overtemperature shutdown
- Short circuit and open-load detection and protection
- Automatic LED current derating - through external NTC measurement and device junction temperature (TJ)
