TPS731

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150-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

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Data sheet

document-pdfAcrobat TPS731xx Capacitor-Free, NMOS, 150-mA Low Dropout Regulator With Reverse Current Protection datasheet (Rev. N) PDF | HTML

TPS731

ACTIVE

Data sheet

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Product details

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

0.15

Vin (max) (V)

5.5

Vin (min) (V)

1.7

Vout (max) (V)

5.5

Vout (min) (V)

1.2

Fixed output options (V)

1.25, 1.5, 1.8, 2.5, 3, 3.1, 3.2, 3.3, 5

Rating

Catalog

Noise (µVrms)

30

PSRR at 100 KHz (dB)

32

Iq (typ) (mA)

0.4

Thermal resistance θJA (°C/W)

207

Load capacitance (min) (µF)

0

Regulated outputs (#)

1

Features

Enable, Foldback Overcurrent protection, Reverse Current Protection

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

30

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

0.15

Vin (max) (V)

5.5

Vin (min) (V)

1.7

Vout (max) (V)

5.5

Vout (min) (V)

1.2

Fixed output options (V)

1.25, 1.5, 1.8, 2.5, 3, 3.1, 3.2, 3.3, 5

Rating

Catalog

Noise (µVrms)

30

PSRR at 100 KHz (dB)

32

Iq (typ) (mA)

0.4

Thermal resistance θJA (°C/W)

207

Load capacitance (min) (µF)

0

Regulated outputs (#)

1

Features

Enable, Foldback Overcurrent protection, Reverse Current Protection

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

30

Operating temperature range (°C)

-40 to 125

SOT-23 (DBV)

5

8.12 mm² 2.9 x 2.8

Stable With or Without Capacitors of All Types
Input Voltage Range of 1.7 V to 5.5 V
Ultralow Dropout Voltage: 30 mV Typical (150-mA
Load)
Excellent Load Transient Response–With or
Without Optional Output Capacitor
New NMOS Topology Provides Low Reverse
Leakage Current
Low Noise: 30 µV_RMS Typical (10 kHz to 100 kHz)
0.5% Initial Accuracy
1% Overall Accuracy Over Line, Load, and
Temperature
Less Than 1-µA Maximum I_Q in Shutdown Mode
Thermal Shutdown and Specified Minimum and
Maximum Current Limit Protection
Available in Multiple Output Voltage Versions
- Fixed Outputs of 1.20 V to 5 V
- Adjustable Outputs from 1.2 V to 5.5 V
- Custom Outputs Available
APPLICATIONS
- Smart Grid and Energy
- Building Automation
- Set-Top Boxes
- Medical Equipment
- Test and Measurement
- Point-of-Sale Terminals
- Wireless Infrastructure

All other trademarks are the property of their respective owners

Stable With or Without Capacitors of All Types
Input Voltage Range of 1.7 V to 5.5 V
Ultralow Dropout Voltage: 30 mV Typical (150-mA
Load)
Excellent Load Transient Response–With or
Without Optional Output Capacitor
New NMOS Topology Provides Low Reverse
Leakage Current
Low Noise: 30 µV_RMS Typical (10 kHz to 100 kHz)
0.5% Initial Accuracy
1% Overall Accuracy Over Line, Load, and
Temperature
Less Than 1-µA Maximum I_Q in Shutdown Mode
Thermal Shutdown and Specified Minimum and
Maximum Current Limit Protection
Available in Multiple Output Voltage Versions
- Fixed Outputs of 1.20 V to 5 V
- Adjustable Outputs from 1.2 V to 5.5 V
- Custom Outputs Available
APPLICATIONS
- Smart Grid and Energy
- Building Automation
- Set-Top Boxes
- Medical Equipment
- Test and Measurement
- Point-of-Sale Terminals
- Wireless Infrastructure

All other trademarks are the property of their respective owners

The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS731xx uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µV_RMS with 0.1-µF C_NR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS731xx uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µV_RMS with 0.1-µF C_NR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

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Technical documentation

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	Type	Title		Date
*	Data sheet	TPS731xx Capacitor-Free, NMOS, 150-mA Low Dropout Regulator With Reverse Current Protection datasheet (Rev. N)	PDF \| HTML	17 Dec 2015
*	Radiation & reliability report	TPS73125MDBVREP Reliability Report		26 Aug 2011
*	Radiation & reliability report	TPS73133MDBVREP Reliability Report		26 Aug 2011
	Application note	LDO Noise Demystified (Rev. B)	PDF \| HTML	18 Aug 2020
	Application note	A Topical Index of TI LDO Application Notes (Rev. F)		27 Jun 2019
	Selection guide	Low Dropout Regulators Quick Reference Guide (Rev. P)		21 Mar 2018
	Application note	LDO PSRR Measurement Simplified (Rev. A)	PDF \| HTML	09 Aug 2017
	More literature	DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag)		14 Feb 2001

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DEM-SOT23LDO — DEM-SOT23LDO Compatible With Most Positive-Output LDO Regulators in 5- or 6-Lead SOT23 (DBV) Package

User guide: PDF

Not available on TI.com

Simulation model

TPS73101 PSpice Transient Model

SBVM343.ZIP (21 KB) - PSpice Model

TPS731

150-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

TPS731

Product details

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