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TPS7A43

ACTIVE

50-mA, 85-V, ultra-low IQ, dual low-dropout voltage regulator with power good and precision enable

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Data sheet

TPS7A43

ACTIVE
Data sheet Order now

Product details

Rating Catalog Vin (max) (V) 85 Vin (min) (V) 4 Iout (max) (A) 0.05 Output options Adjustable Output, Fixed Output Vout (max) (V) 14.5 Vout (min) (V) 1.24 Fixed output options (V) 3.3, 5 Noise (µVrms) 115 PSRR at 100 KHz (dB) 75 Iq (typ) (mA) 0.0055 Features Enable, Power good Thermal resistance θJA (°C/W) 53.7 Load capacitance (min) (µF) 1 Regulated outputs (#) 2 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 600 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 85 Vin (min) (V) 4 Iout (max) (A) 0.05 Output options Adjustable Output, Fixed Output Vout (max) (V) 14.5 Vout (min) (V) 1.24 Fixed output options (V) 3.3, 5 Noise (µVrms) 115 PSRR at 100 KHz (dB) 75 Iq (typ) (mA) 0.0055 Features Enable, Power good Thermal resistance θJA (°C/W) 53.7 Load capacitance (min) (µF) 1 Regulated outputs (#) 2 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 600 Operating temperature range (°C) -40 to 125
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9
  • Input voltage: 4 V to 85 V
  • Wide output (OUT) voltage range:
    • Adjustable: 1.24 V to 14.5 V
    • Fixed: 1.25 V to 5.0 V
  • Selectable intermediate output (MID_OUT):
    • 10 V, 12 V, 15 V
  • Maximum output current:
    • 50 mA (shared between OUT and MID_OUT)
  • 1% accuracy over temperature
  • Ultra-low IQ: 5.5 µA
  • Precision enable
  • Power-good (PG) output (open drain)
  • Thermal shutdown and overcurrent protection
  • Operating junction temperature: –40°C to +125°C
  • Package: HVSSOP-10 (RθJA = 53.7°C/W)
  • Input voltage: 4 V to 85 V
  • Wide output (OUT) voltage range:
    • Adjustable: 1.24 V to 14.5 V
    • Fixed: 1.25 V to 5.0 V
  • Selectable intermediate output (MID_OUT):
    • 10 V, 12 V, 15 V
  • Maximum output current:
    • 50 mA (shared between OUT and MID_OUT)
  • 1% accuracy over temperature
  • Ultra-low IQ: 5.5 µA
  • Precision enable
  • Power-good (PG) output (open drain)
  • Thermal shutdown and overcurrent protection
  • Operating junction temperature: –40°C to +125°C
  • Package: HVSSOP-10 (RθJA = 53.7°C/W)

The TPS7A43 low-dropout (LDO) linear voltage regulator introduces a combination of a 4-V to 85-V input voltage range with very-low quiescent current.

This device can support a wide range of input voltages (for example, a 15-s battery and 24-V to 48-V line power) and withstand line transient voltages up to 85 V. These features help modern applications meet increasingly stringent energy requirements, and help extend battery life in portable-power solutions.

The TPS7A43 output (OUT) is available in both fixed and adjustable output versions, which can regulate from 1.24 V to 14.5 V at 1% accuracy. The device also provides a second intermediate output (MID_OUT) that can be set to 10 V, 12 V, and 15 V using the MVSEL pins and can be used to bias gate drivers in place of a discrete regulator.

The TPS7A43 features a precision enable input that helps enable or disable the LDO at a fixed and accurate threshold voltage using a resistor divider from the input.

The power-good (PG) output is used to monitor the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power sources in the system.

The TPS7A43 low-dropout (LDO) linear voltage regulator introduces a combination of a 4-V to 85-V input voltage range with very-low quiescent current.

This device can support a wide range of input voltages (for example, a 15-s battery and 24-V to 48-V line power) and withstand line transient voltages up to 85 V. These features help modern applications meet increasingly stringent energy requirements, and help extend battery life in portable-power solutions.

The TPS7A43 output (OUT) is available in both fixed and adjustable output versions, which can regulate from 1.24 V to 14.5 V at 1% accuracy. The device also provides a second intermediate output (MID_OUT) that can be set to 10 V, 12 V, and 15 V using the MVSEL pins and can be used to bias gate drivers in place of a discrete regulator.

The TPS7A43 features a precision enable input that helps enable or disable the LDO at a fixed and accurate threshold voltage using a resistor divider from the input.

The power-good (PG) output is used to monitor the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power sources in the system.
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Technical documentation

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* Data sheet TPS7A43 50-mA, 85-V, Ultra-Low IQ, Low-Dropout Linear Voltage Regulator With Power-Good, Precision Enable, and Selectable Mid-Output Rail datasheet (Rev. B) PDF | HTML 15 Nov 2022
Application note An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) PDF | HTML 23 Sep 2025
White paper Understanding the Foundations of Quiescent Current in Linear Power Systems 18 Feb 2021
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
E-book LDO Basics (Rev. A) 08 Apr 2019
Technical article LDO basics: dropout PDF | HTML 16 Mar 2017

Design & development

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Evaluation board

TPS7A43EVM-047 — TPS7A43 50-mA, 85-V, ultra-low IQ, dual LDO voltage regulator with power good evaluation module

The TPS7A43EVM-047 evaluation module (EVM) is a platform for evaluating the operation and performance of the TPS7A43 linear regulator. This EVM configuration contains a single 50-mA, high-voltage, low-quiescent-current (IQ), dual-output, low-dropout (LDO) voltage regulator for general applications. (...)

User guide: PDF
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Simulation model

TPS7A43 PSpice Transient Model (3.3 V)

SBVM980.ZIP (51 KB) - PSpice Model
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Simulation model

TPS7A43 PSpice Transient Model (5 V)

SBVM979.ZIP (61 KB) - PSpice Model
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Simulation model

TPS7A43 PSpice Transient Model (Adjustable)

SBVM981.ZIP (52 KB) - PSpice Model
Download
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