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TPS74401MRGWREP

IC REG LINEAR POS ADJ 3A 20-VQFN

Part Number: TPS74401MRGWREP

Manufacturer: Texas Instruments

Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package: 20-VQFN Exposed Pad

Datasheet:: TPS74401MRGWREP.pdf

Description: IC REG LINEAR POS ADJ 3A 20-VQFN

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

TPS74401MRGWREP Enhanced Product 3.0-A Ultra-LDO with Programmable Soft-Start

A comprehensive technical overview of the TPS74401MRGWREP, an Enhanced Product (EP), ultra-low-dropout linear regulator from Texas Instruments. Covers device function, core features, electrical specifications, 20-lead VQFN package, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 20-Lead VQFN (RGW) 0.8V to 5.5V Input

Device Classification 3.0-A Ultra-LDO Voltage Regulator with Programmable Soft-Start

Part Number: TPS74401MRGWREP

Mounting Type: Surface Mount

Operating Temperature Range: -55°C to +125°C

PRODUCT OVERVIEW

What Is the TPS74401MRGWREP?

TPS74401MRGWREP is an ultra-low-dropout (LDO) linear regulator from Texas Instruments capable of sourcing a 3.0-A load. The device is part of the Enhanced Product (EP) portfolio, supporting defense, aerospace, and medical applications with controlled baseline, one assembly/test site, one fabrication site, extended product life cycle, extended product-change notification, and full product traceability[reference:0].

The TPS74401MRGWREP offers an adjustable output voltage from 0.8 V to 3.6 V with 1% accuracy over line, load, and temperature[reference:1][reference:2]. The device supports input voltages as low as 0.9 V with an external bias supply, and features an ultra-low dropout voltage of 115 mV at 3.0 A typical[reference:3][reference:4].

A user-programmable soft-start pin provides a linear startup with ramp time set by an external capacitor, minimizing stress on the input power source by reducing capacitive inrush current on start-up[reference:5][reference:6]. The device is stable with any or no output capacitor and delivers excellent transient response[reference:7]. Fully specified from –55°C to +125°C, the TPS74401MRGWREP is ideal for FPGA applications, DSP core and I/O voltages, post-regulation, and applications with special start-up time or sequencing requirements[reference:8][reference:9].

3.0-A Output Current Ultra-low dropout of 115 mV at 3.0 A for high-current, low-voltage applications.

Enhanced Product (EP) Supports defense, aerospace, and medical applications with controlled baseline and full traceability.

Programmable Soft-Start External capacitor sets ramp time, reducing inrush current and input source stress.

DEVICE HIGHLIGHTS

Key Features and Benefits of TPS74401MRGWREP

3.0-A Output with Ultra-Low Dropout

Delivers 3.0 A with a typical dropout voltage of only 115 mV, enabling efficient power delivery in low-voltage, high-current applications[reference:10][reference:11].

Programmable Soft-Start

External capacitor on the SS pin sets the startup ramp time, minimizing inrush current and reducing stress on the input power source[reference:12].

Wide Input & Output Range

Supports input voltages from 0.8 V to 5.5 V (as low as 0.9 V with external bias) and adjustable output from 0.8 V to 3.6 V[reference:13][reference:14].

1% Accuracy Over Line, Load & Temperature

Precision reference and error amplifier deliver 1% accuracy across all operating conditions, ensuring reliable regulation[reference:15][reference:16].

Extended Temperature Range

Fully specified from –55°C to +125°C with controlled baseline, one assembly/test/fabrication site, and full product traceability[reference:17].

Compact & Robust Package

Available in a 5-mm × 5-mm × 1-mm 20-lead VQFN package with exposed thermal pad for excellent thermal performance[reference:18][reference:19].

REFERENCE DATA

Technical Specifications for TPS74401MRGWREP

Part Number	TPS74401MRGWREP	Manufacturer	Texas Instruments
Base Part Number	TPS74401-EP	Device Type	3.0-A Ultra-LDO with Programmable Soft-Start
Input Voltage (VIN)	0.8 V to 5.5 V	Input Voltage (with Bias)	As Low as 0.9 V[reference:20]
Output Voltage	0.8 V to 3.6 V (Adjustable)[reference:21]	Output Current	3.0 A[reference:22]
Dropout Voltage @ 3.0 A	115 mV (Typical)[reference:23]	Dropout Voltage (Max)	195 mV @ 3.0 A[reference:24]
Accuracy	1% Over Line, Load, and Temperature[reference:25]	PSRR @ 1 kHz	73 dB[reference:26]
Soft-Start	Programmable with External Capacitor[reference:27]	Output Capacitor	Stable with Any or No Output Capacitor[reference:28]
Package	20-Lead VQFN (RGW)[reference:29]	Package Body Size	5.00 mm × 5.00 mm × 1.00 mm[reference:30]
Mounting Type	Surface Mount	Operating Temperature	-55°C to +125°C[reference:31]
Junction Temperature (Max)	150°C	Storage Temperature Range	-65°C to +150°C
ESD Protection (HBM)	2000 V	ESD Protection (CDM)	500 V
Qualification	HiRel Enhanced Product[reference:32]	MSL Rating	Level-2-260C-1 YEAR
Lead Finish	NiPdAu	RoHS	Yes
Packaging	Tape & Reel (1,000 per Reel)	Device Marking	74401

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for TPS74401MRGWREP

Output Voltage Configuration

The TPS74401MRGWREP output voltage is set with an external resistor divider connected to the FB pin:

Adjustable Output: 0.8 V to 3.6 V using external feedback resistors[reference:33]
Output Voltage Formula: V_OUT = V_REF × (1 + R1 / R2), where V_REF = 0.8 V
Soft-Start: Ramp time set by external capacitor (C_SS) on the SS pin[reference:34]
Enable: Active-high EN pin for power-down control[reference:35]

PCB and Power-Supply Guidance

LDO regulator performance depends on layout, bypassing, and thermal management:

Place input and output capacitors as close as possible to the device pins
Stable with any or no output capacitor - flexible for various designs[reference:36]
Connect the exposed thermal pad (VQFN package) to a large-area ground plane for optimal thermal dissipation
For low input voltage operation (down to 0.9 V), connect an external bias supply[reference:37]
Thermal resistance θJA = 42.1°C/W (VQFN-20 package)
Verify the recommended PCB footprint from the official datasheet before production

20-LEAD VQFN (RGW)

Pin Configuration Reference for TPS74401MRGWREP

74401

VQFN (RGW) TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The RGW package has 20 pins with exposed thermal pad (5-mm × 5-mm).

1 EN Enable Input (Active HIGH)

2 IN Input Supply Voltage

3 IN Input Supply Voltage

4 IN Input Supply Voltage

5 IN Input Supply Voltage

6 IN Input Supply Voltage

7 IN Input Supply Voltage

8 NC No Connect

9 BIAS External Bias Supply Input

10 GND Ground

11 SS Soft-Start - Connect Capacitor to GND

12 PG Power-Good Output (Open-Drain)

13 NC No Connect

14 FB Feedback Input - Connect to External Resistor Divider

15 NC No Connect

16 OUT Regulated Output Voltage

17 OUT Regulated Output Voltage

18 OUT Regulated Output Voltage

19 OUT Regulated Output Voltage

20 OUT Regulated Output Voltage

APPLICATION AREAS

Typical Applications for TPS74401MRGWREP

Aerospace & Defense Systems

Enhanced Product (EP) with controlled baseline, single assembly/test/fabrication site, extended product life cycle, and full product traceability[reference:38].

Medical Equipment

Extended temperature range (–55°C to 125°C) and high accuracy for critical medical instrumentation.

FPGA & DSP Power Supplies

Core and I/O voltage regulation for FPGAs and DSPs with programmable soft-start for sequencing[reference:39].

Post-Regulation

High-performance post-regulation for switching converters with excellent transient response[reference:40].

Applications with Special Start-Up Requirements

Programmable soft-start enables custom ramp times for sequencing and inrush control[reference:41].

Hot-Swap & Inrush Control

Soft-start reduces inrush current, making the device suitable for hot-swap and inrush-limited applications[reference:42].

REPLACEMENT GUIDANCE

Selecting an Alternative for TPS74401MRGWREP

A replacement for the TPS74401MRGWREP should not be selected only by product category. The electrical characteristics, package, and pin configuration must be evaluated against the actual circuit requirements.

Input voltage range (0.8 V–5.5 V)

Output current capability (3.0 A)

Output voltage range (0.8 V–3.6 V)

Dropout voltage (115 mV @ 3.0 A)

Programmable soft-start capability

Package (20-lead VQFN, 5mm × 5mm)

Operating temperature range (–55°C to +125°C)

Enhanced Product (EP) qualification

Family alternatives: TPS74401RGWR (standard version, –40°C to 125°C), TPS74401RGWT (small tape and reel, standard version), TPS74401-EP (same EP, different orderable suffix), TPS7A4701-EP (higher voltage LDO alternative). For non-EP requirements, consider the standard TPS74401 series. Select based on temperature range, EP qualification, package, and packaging needs.

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MANUFACTURER INFORMATION

Texas Instruments

The TPS74401-EP (TPS74401MRGWREP) belongs to the Enhanced Product portfolio of Texas Instruments. The EP designation provides controlled baseline, one assembly/test/fabrication site, extended product life cycle, extended product-change notification, and full product traceability for defense, aerospace, and medical applications[reference:43].

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Haishengye Electronics

Haishengye Electronics provides electronic component stock supply, BOM sourcing, quotation support, and quality inspection services for TPS74401MRGWREP and related devices.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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TPS74401MRGWREP Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: TPS74401MRGWREP

Manufacturer: Texas Instruments

Package: 20-VQFN Exposed Pad

Series: -

Package/Case: 20-VQFN Exposed Pad

Packaging: Tape & Reel (TR)

Product Status: Active

Output Configuration: Positive

Output Type: Adjustable

Number of Regulators: 1

Voltage - Input (Max): 5.5V

Voltage - Output (Min/Fixed): 0.8V

Voltage - Output (Max): 3.6V

Voltage Dropout (Max): 0.24V @ 3A

Current - Output: 3A

Current - Quiescent (Iq): -

Current - Supply (Max): -

PSRR: 73dB ~ 50dB (1kHz ~ 800kHz)

Control Features: Enable, Power Good, Soft Start

Protection Features: Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)

Operating Temperature: -55°C ~ 125°C

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 20-VQFN (5x5)

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TPS74401MRGWREP Procurement and Technical Support

TPS74401MRGWREP is manufactured by Texas Instruments. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: TPS74401MRGWREP

Manufacturer: Texas Instruments

Package: 20-VQFN Exposed Pad

Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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