Linear regulators designed for up to 40V Vin operations

5th June 2018
Posted By : Enaie Azambuja
Linear regulators designed for up to 40V Vin operations

The TPS7A66-Q1 and TPS7A69-Q1 are low-dropout linear regulators designed for up to 40V Vin operations. With only 12µA quiescent current at no load, they are quite suitable for standby microprocessor control-unit systems, especially in automotive applications. The devices feature integrated short-circuit and overcurrent protection. The devices implement reset delay on power up to indicate the output voltage is stable and in regulation.

One can program the delay with an external capacitor. A low-voltage tracking feature allows for a smaller input capacitor and can possibly eliminate the need of using a boost converter during cold-crank conditions.

The devices operate in the –40°C to 125°C temperature range. The TPS7A6650EDGNRQ1 device is qualified to AEC-Q100 grade 0, operating in the –40°C to 150°C temperature range. These features suit the devices well for power supplies in various automotive applications.


  • Qualified for Automotive Applications

AEC-Q100 Test Guidance With the Following:

  • Device Temperature Grade 1
  • Device Temperature Grade 0 (TPS7A6650EDGNRQ1 Only)
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C4

Device Junction Temperature Range:

  • –40°C to +150°C
  • 4V to 40V Wide Vin Input Voltage Range With up to 45V Transient
  • Output Current: 150mA

Low Quiescent Current, I(q):

  • 2µA When EN = Low (Shutdown Mode)
  • 12µA Typical at Light Loads
  • Low ESR Ceramic Output Stability Capacitor (2.2µF–100µF)
  • 300mV Dropout Voltage at 150mA
  • (Typical, V(Vin) = 4V)
  • Fixed (3.3V and 5V) and Adjustable
  • (1.5V to 5V) Output Voltages
  • (Adjustable for TPS7A66-Q1 Only)
  • Low Input Voltage Tracking

Integrated Power-On Reset:

  • Programmable Reset-Pulse Delay
  • Open-Drain Reset Output

Integrated Fault Protection:

  • Thermal Shutdown
  • Short-Circuit Protection
  • Input Voltage Sense Comparator
  • (TPS7A69-Q1 Only)


  • 8-Pin SOIC-D for TPS7A69-Q1
  • 8-Pin HVSSOP-DGN for TPS7A6601-Q1

Access the datasheet here.

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