onsemi NCV7685 LED linear current driver

The NCV7685 is designed for use in the regulation and control of LED in automotive applications and consists of twelve linear programmable constant current sources with common reference and 60 mA current per channel. The device can be used with microcontroller applications using the I²C bus or in stand-alone applications. It allows different duty cycle levels adjustable using pulse width modulation (PWM) independently for each output channel programmable via the I²C serial interface. Part of the family is also the NCV7683 that integrates eight linear programmable current sources, enabling strings of LEDs to be driven with 100mA per channel.

Key features

• Twelve common current programmable sources up to 60 mA
• Independent PWM duty cycle control for each channel
• Open LED string diagnostics and protection features
• Low dropout operation for pre−regulator applications

Additional features

• Independent PWM duty cycle control for each channel
• Common PWM duty cycle control via I²C
• On-chip 150, 300, 600, and 1200 Hz PWM
• Open LED string diagnostics
• Low dropout operation for pre−regulator applications
• Single resistor for current set point
• Voltage reference 3.3 V / 1 mA
• 8-bits I²C interface with CRC8 error detection
• OTP bank for stand−alone operation (2 configurations)
• Output enable pin
• Detection and protection against open load and under-voltage conditions
• Over-temperature detection and protection
• Low emission with spread spectrum oscillator
• AEC-Q100 and PPAP capable
• Compact SSOP24 package

Applications

• Exterior Lighting (Low Power)
• Interior Lighting
• Entry Level LED Tail Lights
• Option Level LED Tail Lights with Sequential Turn Indicator
• Turn Signal and Other Externally Modulated Applications
• RGB LED driver
• Dashboard Applications

Available tools

• Twelve Channels LED Linear Current Driver with I²C Interface:
  • NCV7685I2CV1GEVB
• Lighting Evaluation Board:
  • SECO-NCV7685RGB-GEVB
• Strata Enabled Automotive LED Tail Lights Evaluation Kit Availability & SamplesSpecifications:
  • STR-NCV7685-AUTO-LED-GEVB