TPS54973PWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS54973PWPG4 is a single-channel 9 A adjustable step-down switching regulator from Texas Instruments using voltage-mode PWM control. It accepts a 3 V to 4 V input voltage and is housed in a 28-pin HTSSOP package for high-current DC-DC conversion. Available in stock worldwide at competitive pricing with fast worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- TPS54973PWPG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 9 A single-channel step-down regulator with voltage-mode PWM control for precise output regulation
- Narrow 3 V to 4 V input range optimized for 3.3 V rail regulation in low-voltage power systems
- 28-pin HTSSOP (R-PDSO-G28) package enabling high power density and efficient thermal management
Applications
The TPS54973PWPG4 is suited for point-of-load DC-DC conversion in server and networking equipment where stable 3.3 V input rails need efficient high-current step-down regulation. It is commonly deployed in FPGA and DSP power supply designs requiring 9 A output current with tight voltage regulation. The device also fits embedded computing and telecommunications systems needing compact, high-efficiency switching power conversion with adjustable output voltage.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 4V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 3.3V |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 16A |
| Output Voltage-Max | 2.5V |
| Output Voltage-Min | 0.9V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP28,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 762kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS54973PWPG4:
Switching Regulator, Voltage-mode, 9A, 700kHz Switching Freq-Max, BICMOS, PDSO28
Switching Regulator, Voltage-mode, 16A, 762kHz Switching Freq-Max, PDSO28
Switching Regulator, Voltage-mode, 16A, 762kHz Switching Freq-Max, PDSO28
Frequently Asked Questions
What is the maximum output current of the TPS54973PWPG4?
The TPS54973PWPG4 supports up to 9 A output current in a single channel, making it suitable for high-current point-of-load applications such as FPGA core power and processor supply rails.
What input voltage range does the TPS54973PWPG4 accept?
The TPS54973PWPG4 operates from a 3 V minimum to 4 V maximum input voltage, with a nominal input of 3.3 V, designed specifically for step-down conversion from standard 3.3 V power supply rails.
What control method does the TPS54973PWPG4 use?
It uses voltage-mode pulse width modulation (PWM) control, providing stable regulation with predictable transient response and easy loop compensation for various output filter designs.
What package is the TPS54973PWPG4 available in?
The device is housed in a 28-pin HTSSOP (R-PDSO-G28) small-outline package, which offers an exposed thermal pad for improved heat dissipation, enabling high-current operation in space-constrained PCB layouts.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”