TPS92612

• Single-channel high-precision current source:
  • ±4.6% Current accuracy from –40°C to +125°C
  • Current adjustable by external sense resistor
  • Up to 150 mA maximum current
• Wide input-voltage range: 4.5 V – 40 V
• Brightness control by input PWM duty cycle
• Low dropout voltage (current-sense voltage drop included)
  • Maximum dropout: 150 mV at 10 mA
  • Maximum dropout: 400 mV at 70 mA
  • Maximum dropout: 700 mV at 150 mA
• Low quiescent current: typical 200 µA
• Protection:
  • LED short-circuit protection with auto-recovery
  • Thermal shutdown
• Support heat sharing with external resistor
• Operating junction temperature range: –40°C to +150°C

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With LEDs being widely used as a light source, simple LED drivers are more and more popular. Compared to discrete solutions, a low-cost monolithic solution lowers system-level component counts and significantly improves current accuracy and reliability.

The TPS92612 device is a single-channel high-side linear LED driver operating from a wide range supply. It is a simple, yet elegant solution to deliver constant current for a single LED string. It can support off-board LED connection with long cables. The TPS92612 device can also be used as a general constant current source or current limiter in other applications.