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TPS929240-Q1
  • TPS929240-Q1
  • TPS929240-Q1

TPS929240-Q1

ACTIVE

Automotive 24-channel 40-V high-side LED and OLED driver

Texas Instruments TPS929240-Q1 Product Info

1 April 2026 3

Parameters

Number of channels

24

Topology

Current Source

Rating

Automotive

TI functional safety category

Functional Safety-Capable

Operating temperature range (°C)

-40 to 125

Vin (min) (V)

4.5

Vin (max) (V)

40

Vout (min) (V)

0

Vout (max) (V)

40

Iout (max) (A)

0.1

Iq (typ) (mA)

4.9

Features

Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short Detection, LED Short to Ground Detection, Overtemperature protection, PWM Dimming, Precise dimming control, Thermal shutdown

Package

HTSSOP (DCP)-38-62.08 mm² 9.7 x 6.4

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 24-channel precision high-side current output:
    • Device supply voltage 4.5V to 40V
    • LED supply voltage 4V to 36V
    • Up to 100mA channel current set by resistor
    • 2-bit global, 6-bit independent current setting
    • High-current accuracy < ±5% at 5mA to 100mA
    • Low voltage drop 750mV at 100mA
    • 12-bit independent PWM dimming
    • Programmable PWM frequency up to 20kHz
    • Phase-shift PWM dimming
    • Linear and exponential dimming method
  • FlexWire™ control interface
    • Up to 1MHz clock frequency
    • Maximum 16 devices on one FlexWire bus
    • Up to 24 bytes data transaction in one frame
    • 5V LDO output to supply CAN transceiver
  • Diagnostic and protection:
    • Programmable FAIL-SAFE state
    • LED open-circuit detection
    • LED short-circuit detection
    • Single-LED short-circuit diagnostic
    • Programmable low-supply detection
    • Open-drain ERR for fault indication
    • Watchdog and CRC for FlexWire interface
    • 8-bit ADC for pin voltage measurement
    • Overtemperature protection
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 24-channel precision high-side current output:
    • Device supply voltage 4.5V to 40V
    • LED supply voltage 4V to 36V
    • Up to 100mA channel current set by resistor
    • 2-bit global, 6-bit independent current setting
    • High-current accuracy < ±5% at 5mA to 100mA
    • Low voltage drop 750mV at 100mA
    • 12-bit independent PWM dimming
    • Programmable PWM frequency up to 20kHz
    • Phase-shift PWM dimming
    • Linear and exponential dimming method
  • FlexWire™ control interface
    • Up to 1MHz clock frequency
    • Maximum 16 devices on one FlexWire bus
    • Up to 24 bytes data transaction in one frame
    • 5V LDO output to supply CAN transceiver
  • Diagnostic and protection:
    • Programmable FAIL-SAFE state
    • LED open-circuit detection
    • LED short-circuit detection
    • Single-LED short-circuit diagnostic
    • Programmable low-supply detection
    • Open-drain ERR for fault indication
    • Watchdog and CRC for FlexWire interface
    • 8-bit ADC for pin voltage measurement
    • Overtemperature protection

Description

With the increasing demand for animation in automotive lighting, LEDs must be controlled independently. Therefore, LED drivers with digital interfaces are essential to effectively drive pixel-controlled lighting applications. In exterior lighting, multiple lamp functions are typically located on different PCB boards with off-board wires connected to each other. It is difficult for a traditional single-ended interface to meet the strict EMC requirements. By using an industrial-standard CAN physical layer, the UART-based FlexWire interface of the TPS929240-Q1 easily accomplishes long distance off-board communication without impacting EMC.

The TPS929240-Q1 is a 24-channel, 40V high-side LED driver that controls the 8-bit output current and 12-bit PWM duty cycles. The device meets multiple regulation requirements with LED open-circuit, short-to-ground, and single LED short-circuit diagnostics. A configurable watchdog also automatically sets FAIL-SAFE states when the MCU connection is lost, and, with programmable EEPROM, TPS929240-Q1 can flexibly be set for different application scenarios.

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