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TPS7E66-Q1

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Automotive, 40V 150mA low-IQ (2.8µA) low-dropout LDO regulator with power good and delay

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Data sheet

TPS7E66-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.15 Output options Adjustable Output, Fixed Output Vout (max) (V) 38 Vout (min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 650 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.0028 Features Enable, Power good, Programmable Delay Thermal resistance θJA (°C/W) 90.2 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1.2 Dropout voltage (Vdo) (typ) (mV) 450 Operating temperature range (°C) -40 to 150
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.15 Output options Adjustable Output, Fixed Output Vout (max) (V) 38 Vout (min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 650 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.0028 Features Enable, Power good, Programmable Delay Thermal resistance θJA (°C/W) 90.2 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1.2 Dropout voltage (Vdo) (typ) (mV) 450 Operating temperature range (°C) -40 to 150
WSON (DRV) 6 4 mm² 2 x 2
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3.0V to 40V (42V maximum)
  • Available output voltage options:
    • Fixed: 1.8V to 12V
    • Adjustable: 1.2V to 38V
  • Output current: up to 150mA
  • ±1.2% accuracy across line, load and temperature
  • Ultra-low IQ: 2.8µA (typical) at IOUT = 0mA
  • Stable with 2.2µF or larger ceramic capacitors
    • ESR range: 0Ω to 1Ω
  • Power-good with de-glitch filter and programmable delay
  • Dropout voltage: 460mV (typical) at 150mA
  • High PSRR:
    • 70dB at 1kHz
    • 45dB at 100kHz
  • Over-current, over-power and over-temperature limiting
  • Package:
    • 6-pin WSON wettable flank (DRV) [RθJA: 90.2°C/W]
    • 8-pin HVSSOP (DGN) [RθJA: 58.5°C/W]
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3.0V to 40V (42V maximum)
  • Available output voltage options:
    • Fixed: 1.8V to 12V
    • Adjustable: 1.2V to 38V
  • Output current: up to 150mA
  • ±1.2% accuracy across line, load and temperature
  • Ultra-low IQ: 2.8µA (typical) at IOUT = 0mA
  • Stable with 2.2µF or larger ceramic capacitors
    • ESR range: 0Ω to 1Ω
  • Power-good with de-glitch filter and programmable delay
  • Dropout voltage: 460mV (typical) at 150mA
  • High PSRR:
    • 70dB at 1kHz
    • 45dB at 100kHz
  • Over-current, over-power and over-temperature limiting
  • Package:
    • 6-pin WSON wettable flank (DRV) [RθJA: 90.2°C/W]
    • 8-pin HVSSOP (DGN) [RθJA: 58.5°C/W]

The TPS7E66-Q1 low-dropout (LDO) linear voltage regulator is a low quiescent current device designed to connect to the battery in the automotive applications and supports wide input voltage range from 3V to 40V. The wide output range is from 1.2V to 38V for the adjustable configuration and from 1.8V to 12V for the fixed configuration and up-to 150mA of load current. With only an 2.8µA quiescent current at no-load, the device is a good design for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The TPS7E66-Q1 supports very tight DC accuracy of ±1.2% over line, load and temperature range. The device responds quickly to line, load transients and has fast recovery from cold-crank conditions. The device also features controlled no-load quiescent current in dropout operation.

The TPS7E66-Q1 is equipped with power-good for monitoring of the output voltage. The power-good delay can be adjusted by using external capacitors. The LDO has built-in protection mechanism for over-current, over-temperature and over-power delivery for reliable operation of the LDO. The TPS7E66-Q1 is stable with an output capacitor range from 2.2µF to 100µF.

The TPS7E66-Q1 is available in a 2.0mm × 2.0mm, 6-pin WSON (wettable flank) (DRV-WF), and 3.0mm × 4.9mm, 8-pin HVSSOP (DGN) package for fixed and adjustable outputs.

The TPS7E66-Q1 low-dropout (LDO) linear voltage regulator is a low quiescent current device designed to connect to the battery in the automotive applications and supports wide input voltage range from 3V to 40V. The wide output range is from 1.2V to 38V for the adjustable configuration and from 1.8V to 12V for the fixed configuration and up-to 150mA of load current. With only an 2.8µA quiescent current at no-load, the device is a good design for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The TPS7E66-Q1 supports very tight DC accuracy of ±1.2% over line, load and temperature range. The device responds quickly to line, load transients and has fast recovery from cold-crank conditions. The device also features controlled no-load quiescent current in dropout operation.

The TPS7E66-Q1 is equipped with power-good for monitoring of the output voltage. The power-good delay can be adjusted by using external capacitors. The LDO has built-in protection mechanism for over-current, over-temperature and over-power delivery for reliable operation of the LDO. The TPS7E66-Q1 is stable with an output capacitor range from 2.2µF to 100µF.

The TPS7E66-Q1 is available in a 2.0mm × 2.0mm, 6-pin WSON (wettable flank) (DRV-WF), and 3.0mm × 4.9mm, 8-pin HVSSOP (DGN) package for fixed and adjustable outputs.
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* Data sheet TPS7E66-Q1 Automotive, 40V, 150mA, Ultra-Low IQ Low-Dropout Regulator with Power-Good datasheet (Rev. A) PDF | HTML 16 Apr 2026
Product overview Low Quiescent Current LDOs for Battery Connected Automotive Systems (Rev. A) PDF | HTML 22 Apr 2026

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Evaluation board

MULTIPKGLDOEVM-823 — Universal LDO linear voltage regulator evaluation module for DBV, DRB, DRV and DQN packages

The MULTIPKGLDOEVM-823 evaluation module (EVM) helps you evaluate the operation and performance of several common packages of linear regulators for possible use in circuit applications. This particular EVM configuration has a DRB, DRV, DQN and DBV footprint for you to solder and (...)

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