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TPS7A1601AQDGNRQ1

Auto 40V LDO, 150mA, 1uA Iq, adjustable 1.2-18V, HVSSOP-8, AEC-Q100

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Manufacturer Part：

TPS7A1601AQDGNRQ1

Package：

HVSSOP-8 (3.00 x 3.00 x 0.90 mm)

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Description

Product Overview

The TPS7A1601AQDGNRQ1 from Texas Instruments is an AEC-Q100 qualified, 40 V input, 150 mA ultra-low-Iq LDO regulator in an HVSSOP-8 package. With 1 µA quiescent current and 1.2 V to 18 V adjustable output, it is designed for always-on automotive battery-powered systems.

Key Specifications

Input Voltage 3 V to 40 V
Output Voltage 1.2 V to 18 V (adjustable)
Output Current 150 mA
Quiescent Current 1 µA (typ)
Dropout Voltage 200 mV @ 150 mA
PSRR 42 dB @ 1 kHz
Operating Temperature -40°C to +125°C
AEC-Q100 Grade 1
Package HVSSOP-8 (3.0 x 3.0 mm)

Features

  • Ultra-low 1 µA quiescent current for always-on systems
  • 40 V maximum input voltage for direct car battery connection
  • Reverse polarity protection up to -40 V
  • Adjustable output from 1.2 V to 18 V
  • Enable pin with 1 µA shutdown current
  • Thermal shutdown and current limit protection

Applications

  • Automotive always-on power supply
  • Car battery-powered MCU and sensor rails
  • Industrial 24 V and 36 V systems
  • Battery-powered tracking and telematics
  • Backup battery regulation

The TPS7A1601AQDGNRQ1 from Texas Instruments is an automotive-qualified high-voltage low-dropout linear regulator in a compact HVSSOP-8 package. The device accepts input voltages from 3 V to 40 V and delivers up to 150 mA output current with adjustable output voltage from 1.2 V to 18 V. The ultra-low 1 µA quiescent current makes it ideal for always-on automotive systems where the regulator must remain active while the vehicle is parked without significantly draining the battery. The 200 mV dropout voltage at 150 mA allows operation with minimal headroom from the battery. Reverse polarity protection up to -40 V protects against negative transients in automotive electrical systems. The device is AEC-Q100 Grade 1 qualified for automotive applications and includes thermal shutdown, current limit, and enable/shutdown functions.

The TPS7A1601AQDGNRQ1 uses a P-channel MOSFET pass element in a low-dropout configuration. The error amplifier compares the feedback voltage (from the external resistor divider) against a 1.2 V internal bandgap reference and drives the P-channel gate to maintain regulation. The ultra-low 1 µA quiescent current is achieved by using a low-bandwidth error amplifier and minimizing bias currents in the internal circuitry. The 40 V input rating is supported by a high-voltage fabrication process for the input stage and pass element. Reverse polarity protection uses internal circuitry that detects negative input voltage and turns off the pass element, blocking reverse current flow. The enable pin controls the regulator on/off state with a precise threshold, reducing current to 1 µA in shutdown.

Pin Name Function
1 OUT Regulated output voltage
2 OUT Regulated output voltage (parallel with Pin 1)
3 PG Power-good open-drain output; active high when output in regulation
4 FB Feedback input; connect resistor divider from VOUT to set output voltage
5 EN Enable input; high = enabled, low = shutdown
6 GND Ground connection
7 IN Input supply (3 V to 40 V)
8 IN Input supply (parallel with Pin 7)
Pad GND Exposed thermal pad; connect to PCB ground plane
  • Always-On Car Battery Supply: Regulating 12 V car battery down to 5 V or 3.3 V for always-on MCU and CAN transceiver in body control modules
  • Industrial 24 V Systems: POL regulation from 24 V DIN-rail supply to 5 V or 3.3 V logic rails with 1 µA standby current
  • Vehicle Tracking: GPS and LTE module supply from car battery with minimal drain during vehicle parking
  • Battery-Powered Telematics: Direct battery connection for fleet management and insurance telematics devices
  • Backup Battery Regulation: Regulating 12 V or 24 V backup battery to logic supply in industrial UPS systems
Model Manufacturer VIN max Iq IOUT Package Notes
TPS7A1601AQDGNR TI 40 V 1 µA 150 mA HVSSOP-8 Non-auto version
TPS7A3301AQCVRG1Q1 TI 40 V 25 µA 1 A VQFN-16 Higher IOUT, higher Iq
NCV8164ASN1T1G onsemi 40 V 3 µA 150 mA SSOT-23-5 Auto, higher Iq
LT3008EDC-3.3#TRMPBF ADI 45 V 3 µA 20 mA DFN-6 Much lower IOUT
MAX17502ATT+T ADI 60 V 3.5 µA 1 A TDFN-8 Buck converter, much higher I
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