Texas Instruments TPS38700/TPS38700-Q1 Power-Supply Sequencer

Texas Instruments TPS38700/TPS38700-Q1 Power-Supply Sequencer is an integrated multichannel voltage sequencer with a window watchdog in a 24-pin 4mm x 4mm VQFN package. The TPS38700/TPS38700-Q1 is intended for systems that require precise power-up/power-down sequencing and interfaced with multichannel voltage supervisors. The sequencer defaults to preprogrammed OTP options, but the I2C can reprogram the power-up and power-down sequence, watchdog settings, and sequence timing options if required.

The TI TPS38700/TPS38700-Q1 power-supply sequencer offers flexible and programmable voltage rail sequencing capabilities, low quiescent current, and a small footprint. These features allow the device to meet most application conditions. The TPS38700-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Input voltage range of 2.2V to 5.5V
  • Undervoltage lockout (UVLO) of 2.0V
  • Low quiescent current of 30µA (typical)
  • Window watchdog
  • NVM error check
    • 1-bit error correction
    • 2-bit error detection
  • Independent RESET
  • Independent NIRQ
  • CRC error check on register maps
  • Battery backup
  • Crystal oscillator option
  • I2C programmable sequence
  • RTC clock alarm function

Applications

  • Medical robotics
  • Industrial robotics

Block Diagram

Block Diagram - Texas Instruments TPS38700/TPS38700-Q1 Power-Supply Sequencer

Multichannel Voltage Sequencer & Monitor

Texas Instruments TPS38700/TPS38700-Q1 Power-Supply Sequencer

State Diagram

Texas Instruments TPS38700/TPS38700-Q1 Power-Supply Sequencer

Texas Instruments TPS38700/TPS38700-Q1 Power-Supply Sequencer