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TPS92761-Q1

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36-V automotive buck regulator with 24-channel LED matrix manager for animated exterior lighting

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Data sheet

TPS92761-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 24 Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 5 Vin (max) (V) 36 Vout (min) (V) 0 Vout (max) (V) 20 Iout (max) (A) 2 Features EEPROM, Fault Diagnostic, Integrated buck converter, PWM Dimming, Spread Spectrum, UART
Number of channels 24 Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 5 Vin (max) (V) 36 Vout (min) (V) 0 Vout (max) (V) 20 Iout (max) (A) 2 Features EEPROM, Fault Diagnostic, Integrated buck converter, PWM Dimming, Spread Spectrum, UART
HTQFP (PHP) 48 81 mm² 9 x 9
  • AEC-Q100 qualified for automotive applications
    • Grade 1: -40°C to 125°C ambient operating temperature
  • Functional safety targeted
    • Developed for functional safety applications
    • Documentation to aid ISO26262 system design up to ASIL B
  • 24 constant current sinks with high precision:
    • 20V maximum voltage capability
    • Up to 90mA channel current set by resistor
    • Low dropout voltage: 400mV (typ) at 90mA
  • Flexible dimming control:
    • 6-bit independent current setting
    • 14-bit independent PWM dimming with phase-shift control
    • Programmable slew-rate control
  • Integrated synchronous buck regulator
    • Wide input voltage range: 5V to 36V
    • Supports 400kHz and 2.1MHz switching frequency
    • Spread spectrum frequency modulation
    • Dynamic headroom voltage control (DHC)
  • UART serial communication
    • Support for up to 2MHz clock frequency
    • Internal oscillator for system clock
    • CAN transceiver compatible
  • Internal EEPROM
    • Failsafe default settings
    • Customer calibration data
  • Extensive fault diagnostics
  • AEC-Q100 qualified for automotive applications
    • Grade 1: -40°C to 125°C ambient operating temperature
  • Functional safety targeted
    • Developed for functional safety applications
    • Documentation to aid ISO26262 system design up to ASIL B
  • 24 constant current sinks with high precision:
    • 20V maximum voltage capability
    • Up to 90mA channel current set by resistor
    • Low dropout voltage: 400mV (typ) at 90mA
  • Flexible dimming control:
    • 6-bit independent current setting
    • 14-bit independent PWM dimming with phase-shift control
    • Programmable slew-rate control
  • Integrated synchronous buck regulator
    • Wide input voltage range: 5V to 36V
    • Supports 400kHz and 2.1MHz switching frequency
    • Spread spectrum frequency modulation
    • Dynamic headroom voltage control (DHC)
  • UART serial communication
    • Support for up to 2MHz clock frequency
    • Internal oscillator for system clock
    • CAN transceiver compatible
  • Internal EEPROM
    • Failsafe default settings
    • Customer calibration data
  • Extensive fault diagnostics

The TPS92761-Q1 is a 24 channel device with an integrated synchronous Buck regulator and protected linear current sinks. The device is capable of driving current up to 90mA through LEDs with channel-to-channel accuracy of less than ±3.5%. Each linear current sink can be individually programmed by a 6-bit current setting value and is independently controlled by pulse width modulation (PWM) using 14-bit registers. Transient behavior is improved by programming uniform phase shifted PWM signals between operating channels.

The LEDs can be powered by the voltage rail generated using the wide 5V to 36V input voltage range integrated synchronous Buck regulator. The buck regulator implements an adaptive off-time current mode control enabling low input voltage operation. The device is capable of providing 2.68A current at 2.1MHz switching frequency and 4A current at 400kHz switching frequency with fast transient response. Dynamic headroom control is implemented to optimize system efficiency and reduce thermal dissipation.

The TPS92761-Q1 features an internal oscillator that supports multidrop, universal asynchronous receiver transmitter (UART) serial interface. The internal EEPROM can store system defaults as well as calibration and lighting module data. An on-board ADC with multiplexed inputs samples all LED channels as well as IC die temperature and supply voltages.

The TPS92761-Q1 is a 24 channel device with an integrated synchronous Buck regulator and protected linear current sinks. The device is capable of driving current up to 90mA through LEDs with channel-to-channel accuracy of less than ±3.5%. Each linear current sink can be individually programmed by a 6-bit current setting value and is independently controlled by pulse width modulation (PWM) using 14-bit registers. Transient behavior is improved by programming uniform phase shifted PWM signals between operating channels.

The LEDs can be powered by the voltage rail generated using the wide 5V to 36V input voltage range integrated synchronous Buck regulator. The buck regulator implements an adaptive off-time current mode control enabling low input voltage operation. The device is capable of providing 2.68A current at 2.1MHz switching frequency and 4A current at 400kHz switching frequency with fast transient response. Dynamic headroom control is implemented to optimize system efficiency and reduce thermal dissipation.

The TPS92761-Q1 features an internal oscillator that supports multidrop, universal asynchronous receiver transmitter (UART) serial interface. The internal EEPROM can store system defaults as well as calibration and lighting module data. An on-board ADC with multiplexed inputs samples all LED channels as well as IC die temperature and supply voltages.

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* Data sheet TPS92761-Q1 Automotive Constant Voltage Buck with 24-Channel Linear LED Driver datasheet PDF | HTML 09 Jun 2026

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