Texas Instruments TPS38700S-Q1 Multichannel Voltage Sequencer

Texas Instruments TPS38700S-Q1 Integrated Multichannel Voltage Sequencer comes with a window watchdog, is I2C programmable, and is available in a 24-pin 4mm x 4mm VQFN package. This multichannel voltage sequencer is an excellent choice for systems that require precise power-up and/or power-down sequencing and can be interfaced with multichannel voltage supervisors. The device defaults to preprogrammed OTP options, but the I2C can reprogram the power-up and power-down sequence, watchdog settings, and sequence timing options if needed.

Flexible and programmable voltage rail sequencing capabilities, low quiescent current, and small footprint allow this device to meet most application requirements. SYNC on the TPS38700S-Q1 will give designers more control over how their system powers up. The TPS38700S-Q1 achieves this by only firing the following enable signal when the current rail has powered up to an acceptable level using the SYNC signal. In addition, TPS38700S-Q1 allows for custom delay options. Texas Instruments TPS38700S-Q1 is designed to be used with the TPS389006-Q1.


  • AEC-Q100 qualified with the following results
    • Device temperature grade 1 (–40°C to +125°C)
  • Sequencing for state-of-the-art SoCs
    • Capable of sequencing up to 6 power rails
    • Power up/down timing sequence programmable via I2C
      • 125us to 64ms (in 125us steps)
      • 500us to 25ms (in 500us steps)
  • System Robustness
    • Active-low open-drain NIRQ to latch system into a safe state during operation error
    • Connect with a multichannel supervisor like the TPS389006-Q1 with a Sync pin for full voltage monitoring and sequencing situations
    • Battery backup function for diagnostic error reporting during power-out events
    • Device thermal shutdown in high-temperature environments


  • Advanced Driver Assistance System (ADAS)
  • Automotive camera modules
  • FPGA power supply sequencing
  • Microprocessor and microcontroller sequencing
  • Multiple supply sequencing

Functional Block Diagram

Block Diagram - Texas Instruments TPS38700S-Q1 Multichannel Voltage Sequencer
Published: 2023-09-08 | Updated: 2023-09-12