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TPS74401RGWR

IC REG LINEAR POS ADJ 3A 20-VQFN

Part Number: TPS74401RGWR

Manufacturer: Texas Instruments

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

Package: 20-VQFN Exposed Pad

Datasheet:: TPS74401RGWR.pdf

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

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

TPS74401RGWR 3-A, Low-VIN (0.8V), Low-Noise, High-PSRR, Adjustable Ultra-Low-Dropout Voltage Regulator

A comprehensive technical overview of the TPS74401RGWR, a 3-A, low-input-voltage, low-noise, high-PSRR, adjustable ultra-low-dropout linear regulator from Texas Instruments featuring programmable soft-start and power-good output. 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) 1.1V to 5.5V VIN

Device Classification 3-A Adjustable LDO Voltage Regulator

Part Number: TPS74401RGWR

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +125°C

PRODUCT OVERVIEW

What Is the TPS74401RGWR?

TPS74401RGWR is a 3-A, low-dropout (LDO) linear regulator from Texas Instruments featuring ultra-low VIN capability (1.1 V to 5.5 V)[reference:0][reference:1] and a wide adjustable output voltage range from 0.8 V to 3.6 V[reference:2][reference:3]. The device is designed to provide an easy-to-use, robust power management solution for a wide variety of applications[reference:4][reference:5].

The TPS74401RGWR includes user-programmable soft-start to minimize stress on the input power source by reducing capacitive inrush current during start-up[reference:6][reference:7]. The soft-start is monotonic and designed for powering many types of processors and ASICs[reference:8][reference:9]. The enable input and power-good output allow easy sequencing with external regulators, providing complete flexibility to meet the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements[reference:10][reference:11].

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process[reference:12][reference:13]. The device is stable with any type of capacitor ≥ 2.2 µF[reference:14][reference:15] and is fully specified for a junction temperature range of –40°C to +125°C[reference:16][reference:17]. The TPS74401RGWR is available in a 5-mm × 5-mm, 20-pin VQFN (RGW) package[reference:18][reference:19].

3-A Output with Ultra-Low Dropout 115-mV typical dropout at 3 A (legacy chip) for high-efficiency, low-loss regulation[reference:20][reference:21].

Ultra-Low Input Voltage 1.1-V to 5.5-V VIN range with VBIAS permitting low VIN operation with good transient response[reference:22][reference:23].

Programmable Soft-Start & Power Good User-programmable soft-start and power-good output enable easy power sequencing for FPGAs, DSPs, and ASICs[reference:24][reference:25].

DEVICE HIGHLIGHTS

Key Features and Benefits of TPS74401RGWR

3-A Output with Ultra-Low Dropout

Delivers 3-A output current with typical dropout voltage of 115 mV at 3 A (legacy chip)[reference:26][reference:27], enabling high-efficiency regulation with minimal power loss.

Ultra-Low Input Voltage Range

Operates with VIN range of 1.1 V to 5.5 V[reference:28][reference:29], with VBIAS permitting low VIN operation with good transient response[reference:30][reference:31].

Wide Adjustable Output Range

Output voltage adjustable from 0.8 V to 3.6 V[reference:32][reference:33] with 1% accuracy over line, load, temperature, and process[reference:34][reference:35].

Programmable Soft-Start

User-programmable soft-start provides monotonic linear voltage start-up[reference:36][reference:37], reducing capacitive inrush current and minimizing stress on the input power source.

Power Good & Enable Control

Power-good (PG) output allows supply monitoring or provides sequencing signals for other supplies[reference:38][reference:39]; enable input allows easy power sequencing with external regulators[reference:40][reference:41].

Compact 5-mm × 5-mm VQFN Package

Available in a 20-pin VQFN (RGW) package (5 mm × 5 mm) for compatibility with TPS742, and also in a 3.5-mm × 3.5-mm VQFN (RGR) package and DDPAK-7 package (legacy chip)[reference:42][reference:43].

REFERENCE DATA

Technical Specifications for TPS74401RGWR

Part Number	TPS74401RGWR	Manufacturer	Texas Instruments
Device Type	3-A Adjustable LDO Voltage Regulator	Series	TPS74401
Input Voltage (VIN)	1.1 V to 5.5 V[reference:44][reference:45]	Bias Voltage (VBIAS)	2.7 V to 5.5 V
Output Voltage Range	0.8 V to 3.6 V[reference:46][reference:47]	Output Current (Max)	3 A[reference:48]
Dropout Voltage (Typical, Legacy Chip)	115 mV @ 3 A[reference:49][reference:50]	Dropout Voltage (Typical, New Chip)	120 mV @ 3 A[reference:51]
Accuracy	1% Over Line, Load, Temperature, and Process[reference:52][reference:53]	PSRR	73 dB ~ 50 dB (1 kHz ~ 800 kHz)[reference:54]
Noise	16 µVRMS[reference:55]	Quiescent Current (Iq)	1 mA
Output Capacitor	Any Capacitor ≥ 2.2 µF (New Chip)[reference:56][reference:57]	Package	20-Lead VQFN (RGW)
Package Body Size	5.00 mm × 5.00 mm[reference:58][reference:59]	Package Height	1.00 mm
Pin Pitch	0.65 mm	Mounting Type	Surface Mount
Junction Temperature	-40°C to +125°C[reference:60][reference:61]	Storage Temperature	-65°C to +150°C
Moisture Sensitivity Level	Level-2-260C-1 YEAR[reference:62][reference:63]	Lead Finish	NiPdAu[reference:64][reference:65]
RoHS	Compliant[reference:66][reference:67]	REACH	REACH Unaffected[reference:68][reference:69]
Protection Features	Over Current, Over Temperature, Short Circuit, UVLO	Control Features	Enable, Power Good, Soft Start[reference:70][reference:71]
ECCN	EAR99[reference:72][reference:73]	HTSUS	8542.39.0070
Packaging	Tape & Reel (3,000 per Reel)[reference:74][reference:75]	Product Status	Active (Recommended for New Designs)

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 TPS74401RGWR

Configuration & Operation

The TPS74401RGWR offers flexible configuration for various power management applications:

Output Voltage Setting: Adjustable from 0.8 V to 3.6 V using external resistor divider connected to the FB pin[reference:76][reference:77]
Programmable Soft-Start: Connect capacitor to SS pin to set the start-up time; if left floating, soft-start ramp time is typically 100 µs[reference:78]
Enable Input (EN): Active-high enable input allows on/off control and power sequencing with external regulators; this pin must not be left floating[reference:79]
Power-Good Output (PG): Open-drain output indicates when output voltage is in regulation; allows supply monitoring or provides sequencing signals[reference:80]
VBIAS Input: Separate bias input (2.7 V to 5.5 V) permits low VIN operation with good transient response[reference:81]
Output Capacitor: Stable with any output capacitor ≥ 2.2 µF (new chip)[reference:82][reference:83]

PCB and Power-Supply Guidance

LDO regulator performance depends on layout, bypassing, and component selection:

Input Capacitor: Place a 1-µF or greater input capacitor close to the VIN pins for best performance[reference:84]
Bias Capacitor: A 1-µF or larger bias capacitor is recommended for best performance on the BIAS pin; if IN is connected to BIAS, use a 4.7-µF or larger capacitor[reference:85]
Output Capacitor: No capacitor is required on OUT for stability (legacy chip), but is recommended for excellent performance (any type ≥ 2.2 µF for new chip)[reference:86]
Soft-Start Capacitor: Connect capacitor from SS to GND to set the desired soft-start ramp time[reference:87]
Exposed Pad (PAD/TAB): Must be soldered to the ground plane for increased thermal performance; internally connected to ground[reference:88]
PG Output: Use a pull-up resistor from 10 kΩ to 1 MΩ from PG pin to a supply up to 5.5 V[reference:89]
NC Pins: Can be left floating or connected to GND to allow better thermal contact to the top-side plane[reference:90]
Verify the recommended PCB footprint from the official datasheet before production

20-LEAD VQFN (RGW)

Pin Configuration Reference for TPS74401RGWR

TPS 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 0.65 mm pitch and a 5.00 mm × 5.00 mm body size[reference:91][reference:92]. Device marking is "TPS" on top row and "74401" on second row.

1 OUT Regulated Output Voltage - Pin 1[reference:93][reference:94]

2 NC No Connect - Not internally connected[reference:95][reference:96]

3 NC No Connect - Not internally connected[reference:97][reference:98]

4 NC No Connect - Not internally connected[reference:99][reference:100]

5 IN Input Supply Voltage - 1.1V to 5.5V[reference:101][reference:102]

6 IN Input Supply Voltage - 1.1V to 5.5V[reference:103][reference:104]

7 IN Input Supply Voltage - 1.1V to 5.5V[reference:105][reference:106]

8 IN Input Supply Voltage - 1.1V to 5.5V[reference:107][reference:108]

9 PG Power-Good Output - Open-drain, active-high output[reference:109][reference:110]

10 BIAS Bias Input - 2.7V to 5.5V[reference:111][reference:112]

11 EN Enable Input - Active High[reference:113][reference:114]

12 GND Ground - Signal ground reference[reference:115][reference:116]

13 NC No Connect - Not internally connected[reference:117][reference:118]

14 NC No Connect - Not internally connected[reference:119][reference:120]

15 SS Soft-Start - Connect capacitor to GND to set start-up time[reference:121][reference:122]

16 FB Feedback Input - Connect to external resistor divider to set output voltage[reference:123][reference:124]

17 NC No Connect - Not internally connected[reference:125][reference:126]

18 OUT Regulated Output Voltage - Pin 18[reference:127][reference:128]

19 OUT Regulated Output Voltage - Pin 19[reference:129][reference:130]

20 OUT Regulated Output Voltage - Pin 20[reference:131][reference:132]

APPLICATION AREAS

Typical Applications for TPS74401RGWR

FPGA, DSP & ASIC Power Supplies

Core and I/O voltage regulation for FPGAs, DSPs, and ASICs with programmable soft-start for sequencing[reference:133][reference:134].

Telecom & Networking Equipment

Low-noise, high-current power regulation for telecommunications and networking infrastructure.

Data Acquisition Systems

Precision power for high-performance data acquisition and measurement equipment.

Test & Measurement Instruments

Ultra-low dropout and low noise for precision test and measurement applications.

Industrial Automation

Robust power management for industrial control and automation systems with wide temperature range.

Post-Regulation for Switching Supplies

Clean up noisy switching regulator outputs with high PSRR (73 dB ~ 50 dB from 1 kHz to 800 kHz)[reference:135] and low noise (16 µVRMS)[reference:136].

REPLACEMENT GUIDANCE

Selecting an Alternative for TPS74401RGWR

A replacement for the TPS74401RGWR 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 (1.1V–5.5V)[reference:137][reference:138]

Output current capability (3A)[reference:139]

Output voltage range (0.8V–3.6V)[reference:140][reference:141]

Dropout voltage (115mV typical @ 3A legacy chip)[reference:142][reference:143]

Package (20-lead VQFN, RGW)[reference:144][reference:145]

Temperature range (–40°C to 125°C)[reference:146][reference:147]

Programmable soft-start and power good[reference:148][reference:149]

MSL rating (Level-2-260C-1 YEAR)[reference:150][reference:151]

Family alternatives: TPS74401RGWT (same package, different tape and reel packaging, 250 units per reel), TPS74401DRCR (VSON-10 package, 3mm × 3mm), TPS74401DRCT (VSON-10, small reel). For higher output current, consider TPS74801 (1.5A version, compatible pinout). For lower current, consider TPS74701 (500mA version). The RGWR variant offers 3,000 units per large tape and reel[reference:152][reference:153]. Select based on output current, package, and packaging needs.

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MANUFACTURER INFORMATION

Texas Instruments

The TPS74401 (TPS74401RGWR) belongs to the low-dropout (LDO) linear regulator portfolio of Texas Instruments. The device is designed to provide an easy-to-use, robust power management solution for a wide variety of applications including FPGA, DSP, and ASIC power supplies[reference:154][reference:155]. The family includes 500-mA, 1.5-A, and 3-A versions with ultra-low VIN capability and programmable soft-start. The TPS74401 is available in 5-mm × 5-mm VQFN (RGW), 3.5-mm × 3.5-mm VQFN (RGR), and DDPAK-7 packages (legacy chip)[reference:156][reference:157].

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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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TPS74401RGWR Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: TPS74401RGWR

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: -40°C ~ 125°C

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 20-VQFN (5x5)

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TPS74401RGWR 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: TPS74401RGWR

Manufacturer: Texas Instruments

Package: 20-VQFN Exposed Pad

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

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