L99LDLH32
L99LDLH32 is 32-channel LED driver manufactured by STMicroelectronics.
Features
- AEC-Q100 qualified
- General
- CAN FD Light patible Serial Interface, Protocol Handler, Draft Specification Proposal (DSP) available from CAN in Automation (Ci A)
- High precision oscillator integrated, no external quartz required
- QFN48L 7x7 with exposed pad
- Timeout watchdog with Limp Home
- Low standby current
- Stand Alone/Fail Safe and Bus mode operation
- Direct drive (1 Direct Input), for 1 function group supporting ASIL requirements
- Widest configurability by embedded non-volatile and volatile memories
- Operating supply voltage range
5.5 V
- 40 V
- Linear Regulators section
- Operating temperature range
- 40°C
- 150°C
- 32 constant current output channels, high side configuration
- Output current from 1 m A to 15 m A, parallelable outputs
- Output voltage up to 35 V
- production data
- Feedback voltage to external pre-regulator, to optimize the regulation voltage minimizing overall power dissipation
- 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
- Slow 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 (1 threshold)
- Over-temperature shutdown
- Short circuit and open load detection and protection
- Automatic LED current derating, through external NTC measurement and device junction temperature (TJ)
Applications
- Automotive OLED Rear Lighting
- Automotive Ambient Lighting
Figure 1. Simplified application schematic
VPRE_REG VBAT
Dr_prot...
