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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftps92620-q1″>View Datasheet

Texas Instruments TPS92620-Q1 Automotive LED Driver

Texas Instruments TPS92620-Q1 Automotive LED Driver is a two-channel driver with a unique thermal management design to reduce temperature rise. Automotive batteries directly power the TPS92620-Q1 linear driver with significant voltage variations to output full current loads up to 250mA per channel. External shunt resistors are leveraged to share output current and dissipate power out of the driver. The device’s full-diagnostic capabilities include LED open, LED short-to-GND circuit, and device overtemperature protection.

The TI TPS92620-Q1 Automotive LED Driver offers a one-fails-all-fail feature that functions with other LED drivers, such as the TPS9261x-Q1, TPS9262x-Q1, TPS9263x-Q1, and TPS92830-Q1 devices, to manage different requirements.

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1 of –40°C to +125°C, TA
  • Wide input voltage range of 4.5V to 40V
  • Thermal sharing by an external shunt resistor
  • Low supply current in fault mode
  • Two high-precision current regulations:
    • Up to 250mA current output for each channel
    • ±5% accuracy over a full temperature range
    • Independent current setting by resistor
    • Independent PWM pin for brightness control
  • Low dropout voltage:
    • Maximum dropout of 600mV for 250mA
  • Diagnostics and protection
    • LED open-circuit with auto-recovery
    • LED short-to-GND with auto-recovery
    • Diagnostic enabled with adjustable threshold
    • Fault bus configurable as either one-fails–all-fail or only-failed-channel off (N-1)
    • Thermal shutdown
  • Operation junction temperature range of –40°C to +150°C

Applications

  • Automotive exterior rear light
    • Rear lamp
    • Center high-mounted stop lamp
    • Side marker
  • Automotive exterior small light
    • Door handle
    • Blind spot detection indicator
    • Charging inlet
  • Automotive interior light
    • Overhead console
    • Reading lamp
  • General-purpose LED driver applications

Schematic

Texas Instruments TPS92620-Q1 Automotive LED Driver

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Texas Instruments TPS92620-Q1 Automotive LED Driver