A high-voltage ultralow-IQ low-dropout regulator

20th June 2018
Posted By : Enaie Azambuja
A high-voltage ultralow-IQ low-dropout regulator

Texas Instruments' TPS7B6701-Q1, TPS7B6733-Q1, and TPS7B6750-Q1 devices (TPS7B67xx-Q1) are low-dropout linear regulators designed for up to 40V VIN operations. With only 15µA quiescent current at light load that greatly increases the endurance time of the automotive battery, the devices drive loads up to 450mA. The TPS7B67xx-Q1 family of devices features an integrated short-circuit and overcurrent protection.

Reset delay and power-good signal are implemented on power-up to indicate that the output voltage is stable and is in regulation. An external capacitor programs the delay. The enable function activates and deactivates the device with an I/O port from the MCU. The device family operates at a temperature range of –40°C to 125°C.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
  • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C3B
  • 4V to 40V Wide-VIN Input-Voltage Range With up to 45V Transient
  • Maximum Output Current, 450mA
  • Low Quiescent Current (IQ))
  • < 4µA When EN = Low (Shutdown Mode)
  • 15µA Typical at Light Loads
  • Low-ESR (0.001 to 20Ω) Ceramic Output-Stability Capacitor (10µF to 500µF When VO ≥ 2.5V, 22µF to 500µF when VO = 1.5V to 2.5V)
  • Maximum Dropout Voltage 450mV at 400mA
  • Adjustable 1.5V to 18V Output Voltages
  • Low-Input Voltage Tracking to UVLO
  • Integrated Power-On Reset
  • Programmable-Reset Pulse Delay
  • Open-Drain Reset Output
  • Integrated Fault Protection
  • Thermal Shutdown
  • Short-Circuit Protection
  • 20-Pin HTSSOP Package

Discover more here.


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