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TPS74801RGWR

IC REG LIN POS ADJ 1.5A 20VQFN

Part Number: TPS74801RGWR

Manufacturer: Texas Instruments

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

Package: 20-VQFN Exposed Pad

Datasheet:: TPS74801RGWR.pdf

Description: IC REG LIN POS ADJ 1.5A 20VQFN

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

TPS74801RGWR 1.5-A, Low-VIN (0.8V), Adjustable Low-Dropout (LDO) Voltage Regulator with Power Good and Enable

A comprehensive technical overview of the TPS74801RGWR, a 1.5-A, low-input-voltage, 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) 0.8V to 5.5V VIN

Device Classification 1.5-A Adjustable LDO Voltage Regulator

Part Number: TPS74801RGWR

Mounting Type: Surface Mount

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

PRODUCT OVERVIEW

What Is the TPS74801RGWR?

TPS74801RGWR is a 1.5-A, low-dropout (LDO) linear regulator from Texas Instruments featuring ultra-low VIN capability (0.8 V) and a wide adjustable output voltage range from 0.8 V to 3.6 V. The device is designed to provide an easy-to-use, robust power management solution for a wide variety of applications.[reference:0][reference:1]

The TPS74801RGWR includes user-programmable soft-start to minimize stress on the input power source by reducing capacitive inrush current during start-up. The soft-start is monotonic and designed for powering many types of processors and ASICs.[reference:2] 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:3]

A precision reference and error amplifier deliver 1% accuracy (new chip) over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 2.2 µF and is fully specified for a junction temperature range of –40°C to +125°C.[reference:4] The TPS74801RGWR is available in a 5-mm × 5-mm, 20-pin VQFN (RGW) package, and also in a compact 3-mm × 3-mm VSON-10 package.[reference:5]

1.5-A Output with Ultra-Low Dropout 60-mV typical dropout at 1.5 A with VBIAS = 5 V for high-efficiency, low-loss regulation.

Ultra-Low Input Voltage 0.8-V to 5.5-V VIN range and 2.7-V to 5.5-V VBIAS range support low-voltage operation.

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

DEVICE HIGHLIGHTS

Key Features and Benefits of TPS74801RGWR

1.5-A Output with Ultra-Low Dropout

Delivers 1.5-A output current with typical dropout voltage of only 60 mV at VBIAS = 5 V, enabling high-efficiency regulation with minimal power loss.[reference:6][reference:7]

Ultra-Low Input Voltage Range

Operates with VIN as low as 0.8 V and up to 5.5 V, with VBIAS range of 2.7 V to 5.5 V, supporting low-voltage power rails and post-regulation applications.[reference:8][reference:9]

Wide Adjustable Output Range

Output voltage adjustable from 0.8 V to 3.6 V with 1% accuracy (new chip) over line, load, temperature, and process.[reference:10][reference:11]

Programmable Soft-Start

User-programmable soft-start provides monotonic linear voltage start-up, reducing capacitive inrush current and minimizing stress on the input power source.[reference:12][reference:13]

Power Good & Enable Control

Power-good (PG) output allows supply monitoring or provides sequencing signals for other supplies; enable input allows easy power sequencing with external regulators.[reference:14][reference:15]

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-mm × 3-mm VSON-10 package.[reference:16][reference:17]

REFERENCE DATA

Technical Specifications for TPS74801RGWR

Part Number	TPS74801RGWR	Manufacturer	Texas Instruments
Device Type	1.5-A Adjustable LDO Voltage Regulator	Series	TPS74801
Input Voltage (VIN)	0.8 V to 5.5 V	Bias Voltage (VBIAS)	2.7 V to 5.5 V
Output Voltage Range	0.8 V to 3.6 V	Output Current (Max)	1.5 A
Dropout Voltage (Typical)	60 mV @ 1.5 A, VBIAS = 5 V	Dropout Voltage (Max)	0.16 V @ 1.5 A
Accuracy	1% (New Chip) / 2% (Legacy Chip)	PSRR	50 dB to 30 dB (1 kHz to 300 kHz)
Noise	20 µVRMS	Quiescent Current (Iq)	1 mA
Output Capacitor	≥ 2.2 µF (Any Type)	Package	20-Lead VQFN (RGW)
Package Body Size	5.00 mm × 5.00 mm	Package Height	1.00 mm
Pin Pitch	0.65 mm	Mounting Type	Surface Mount
Junction Temperature	-40°C to +125°C	Storage Temperature	-65°C to +150°C
Moisture Sensitivity Level	MSL 2 (1 Year)	Lead Finish	NiPdAu
RoHS	Compliant	REACH	REACH Unaffected
Protection Features	Over Current, Over Temperature, Short Circuit, UVLO	Control Features	Enable, Power Good, Soft Start
ECCN	EAR99	HTSUS	8542.39.0070
Packaging	Tape & Reel (3,000 per Reel)	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 TPS74801RGWR

Configuration & Operation

The TPS74801RGWR 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:18]
Programmable Soft-Start: Connect capacitor to SS pin to set the soft-start time; reduces inrush current during start-up[reference:19]
Enable Input (EN): Active-high enable input allows on/off control and power sequencing with external regulators[reference:20]
Power-Good Output (PG): Open-drain output indicates when output voltage is within regulation; allows supply monitoring and sequencing[reference:21]
VBIAS Input: Separate bias input (2.7 V to 5.5 V) permits low VIN operation with good transient response[reference:22][reference:23]
Output Capacitor: Stable with any output capacitor ≥ 2.2 µF, including ceramic capacitors[reference:24][reference:25]

PCB and Power-Supply Guidance

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

Input Capacitor: Place a high-quality ceramic capacitor close to the VIN pin to minimize input voltage ripple
Bias Capacitor: Decouple VBIAS with a ceramic capacitor for optimal performance and transient response
Output Capacitor: Use any capacitor type ≥ 2.2 µF; ceramic capacitors are recommended for low ESR and stability[reference:26]
Soft-Start Capacitor: Connect capacitor from SS to GND to set the desired soft-start ramp time
PowerPAD™: The exposed thermal pad on the bottom of the VQFN package must be soldered to the PCB for proper thermal and electrical performance
Thermal Management: θJA = 36°C/W; ensure adequate PCB copper area for heat dissipation[reference:27]
PG Output: Use a pull-up resistor on the open-drain PG output; voltage can be pulled up to VIN or another supply
Verify the recommended PCB footprint from the official datasheet before production

20-LEAD VQFN (RGW)

Pin Configuration Reference for TPS74801RGWR

TPS 74801

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. Device marking is "TPS" on top row and "74801" on second row.[reference:28]

1 VIN Input Supply Voltage - 0.8V to 5.5V

2 VIN Input Supply Voltage - 0.8V to 5.5V

3 NC No Connect - Not internally connected

4 EN Enable Input - Active High; pull high to enable the device

5 PG Power-Good Output - Open-drain output; indicates output voltage is in regulation

6 NC No Connect - Not internally connected

7 SS Soft-Start - Connect capacitor to GND to set soft-start time

8 VBIAS Bias Supply Input - 2.7V to 5.5V; provides bias for internal circuits

9 VOUT Regulated Output Voltage - 0.8V to 3.6V

10 VOUT Regulated Output Voltage - 0.8V to 3.6V

11 FB Feedback Input - Connect to external resistor divider to set output voltage

12 GND Ground - Signal ground reference

13 NC No Connect - Not internally connected

14 NC No Connect - Not internally connected

15 NC No Connect - Not internally connected

16 NC No Connect - Not internally connected

17 NC No Connect - Not internally connected

18 NC No Connect - Not internally connected

19 NC No Connect - Not internally connected

20 NC No Connect - Not internally connected

APPLICATION AREAS

Typical Applications for TPS74801RGWR

FPGA, DSP & ASIC Power Supplies

Core and I/O voltage regulation for FPGAs, DSPs, and ASICs with programmable soft-start for sequencing.[reference:29]

Telecom & Networking Equipment

Low-noise, high-current power regulation for telecommunications and networking infrastructure.[reference:30]

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 (50 dB to 30 dB from 1 kHz to 300 kHz) and low noise (20 µVRMS).[reference:31]

REPLACEMENT GUIDANCE

Selecting an Alternative for TPS74801RGWR

A replacement for the TPS74801RGWR 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 (0.8V–5.5V)

Bias voltage range (2.7V–5.5V)

Output current capability (1.5A)

Output voltage range (0.8V–3.6V)

Dropout voltage (60mV typical @ 1.5A)

Package (20-lead VQFN, RGW)

Temperature range (–40°C to 125°C)

Programmable soft-start and power good

Family alternatives: TPS74801RGWT (same package, different tape and reel packaging, 250 units per reel), TPS74801DRCR (VSON-10 package, 3mm × 3mm), TPS74801DRCT (VSON-10, small reel).[reference:32] For higher output current, consider TPS74901 (3A version, compatible pinout).[reference:33] For lower current, consider TPS74701 (500mA version). The RGWR variant offers 3,000 units per large tape and reel.[reference:34] Select based on output current, package, and packaging needs.

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MANUFACTURER INFORMATION

Texas Instruments

The TPS74801 (TPS74801RGWR) 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:35] The family includes 500-mA, 1.5-A, and 3-A versions with ultra-low VIN capability and programmable soft-start.

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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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TPS74801RGWR Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: TPS74801RGWR

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): 0.16V @ 1.5A

Current - Output: 1.5A

Current - Quiescent (Iq): -

Current - Supply (Max): -

PSRR: 50dB ~ 30dB (1kHz ~ 300kHz)

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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TPS74801RGWR Procurement and Technical Support

TPS74801RGWR 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: TPS74801RGWR

Manufacturer: Texas Instruments

Package: 20-VQFN Exposed Pad

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

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