TPS54373PWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TPS54373PWPG4 is a 3A synchronous step-down switching regulator from Texas Instruments, operating from 3V to 6V input with pulse-width modulation voltage-mode control. Packaged in a 20-pin HTSSOP for efficient thermal management in single-channel DC-DC conversion. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TPS54373PWPG4 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
- 3A output current single-channel step-down regulator with PWM voltage-mode control for precise output regulation
- 3V to 6V input voltage range covering 3.3V, 5V USB, and regulated adapter power supplies
- 20-pin HTSSOP with exposed thermal pad for enhanced heat dissipation in compact high-current designs
- Adjustable output voltage with external resistor divider enabling optimized regulation for diverse load requirements
Applications
The TPS54373PWPG4 is designed for point-of-load DC-DC conversion in portable electronics, embedded systems, and telecom equipment powered from 5V USB or regulated adapters. Its 3A current capability makes it suitable for powering FPGAs, DSPs, microcontrollers, and memory subsystems requiring tight voltage regulation from 3.3V, 5V, or 5.5V bus rails. The compact HTSSOP package with thermal pad enables high power density designs in space-constrained applications such as laptop accessories, solid-state drives, and industrial sensor modules.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 5.5V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 6A |
| Output Voltage-Max | 3.3V |
| Output Voltage-Min | 0.9V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the TPS54373PWPG4?
The TPS54373PWPG4 operates with an input voltage range of 3V minimum to 6V maximum, with a nominal input of 5.5V. This range is well suited for 5V USB power, regulated 5V adapter supplies, and 3.3V bus rails. The device includes undervoltage lockout (UVLO) to prevent operation below the minimum input threshold, protecting the circuit during power ramp-up and brown-out conditions.
What is the maximum output current of the TPS54373PWPG4?
The TPS54373PWPG4 delivers a maximum continuous output current of 3A. This current capability is sufficient to power multiple CMOS logic ICs, microcontrollers, DDR memory, and low-power FPGAs from a single regulator. The synchronous buck topology with integrated MOSFETs provides high efficiency, typically exceeding 90% at moderate loads in the 3V to 6V input range.
What control method does the TPS54373PWPG4 use?
The TPS54373PWPG4 uses voltage-mode pulse-width modulation (PWM) control. In this scheme, the output voltage is sensed and compared to an internal reference, with the duty cycle adjusted via the PWM comparator to maintain regulation. Voltage-mode control provides good noise immunity and is straightforward to compensate using external components, making it reliable in a wide range of application environments.
What package does the TPS54373PWPG4 use?
The TPS54373PWPG4 is packaged in a 20-pin HTSSOP (Heat-sink Thin Shrink Small Outline Package), denoted by the PWP suffix. The HTSSOP package features an exposed thermal pad on the bottom that must be soldered to a PCB copper pour for optimal thermal performance. This package enables the 3A rated device to dissipate heat effectively while maintaining a compact 6.5mm x 4.4mm footprint.
How is the output voltage set on the TPS54373PWPG4?
The output voltage of the TPS54373PWPG4 is set by an external resistor divider connected between the output and the feedback (FB) pin. The internal reference voltage (typically 0.891V) is maintained at the FB pin by the control loop. By selecting the ratio of the two feedback resistors, the output can be programmed to any voltage between the minimum regulated output and the input voltage, subject to the minimum duty cycle limit of the device.
Related Guides
SN74LVC14APWR Hex Schmitt-Trigger Inverter: Application Note and Design Guide
Complete design guide for the SN74LVC14APWR hex Schmitt-trigger inverter: thresholds, decoupling, oscillator design, package selection, and common pitfalls.
May 21, 2026
TPS62841DGRR Buck Converter Selection Guide: Ultra-Low 60 nA IQ for Battery-Powered IoT
How to choose the right TPS62841 variant for IoT, wearables, and wireless sensors: quiescent current, voltage range, package, and application examples.
May 21, 2026
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 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
ISO7840FDW
Small Outline Packages
Integrated Circuit
ISO7820FDWR
Small Outline Packages
Integrated Circuit
ISO7763FQDBQRQ1
Small Outline Packages
Integrated Circuit
LM22671MRE-ADJNOPB
Small Outline Packages
Integrated Circuit
JFE150DCKT
SOT23 (5-Pin)
Integrated Circuit
ISO7820LLDWW
Small Outline Packages
Integrated Circuit
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.”