Texas Instruments

TPS54316PWP  

DC Switching Voltage Regulators

TPS54316PWP Description

The TPS54316PWP from Texas Instruments is a high-efficiency, 3A synchronous buck (step-down) DC-DC converter with a fixed 3.3V output. Part of the SWIFT™ series, this regulator operates over a wide input voltage range of 3V to 6V, making it suitable for low-voltage power supply designs. With a switching frequency of 350kHz or 550kHz, it balances efficiency and component size, ideal for space-constrained applications. The device integrates a synchronous rectifier for improved efficiency, reducing the need for external Schottky diodes. Packaged in a 20-pin HTSSOP (PowerPAD™) surface-mount package, it offers thermal performance and compactness. Although marked as obsolete, it remains relevant for legacy designs requiring robust performance.

TPS54316PWP Features

• Fixed 3.3V Output: Simplifies design by eliminating feedback resistors.
• High Efficiency: Synchronous rectification ensures up to 95% efficiency, reducing power loss.
• Wide Input Range (3V–6V): Supports common low-voltage rails like 5V or Li-ion batteries.
• Dual Switching Frequency (350kHz/550kHz): Allows flexibility in noise vs. efficiency trade-offs.
• Integrated Power MOSFETs: Reduces external component count and board space.
• ROHS3 Compliant & REACH Unaffected: Meets environmental standards.
• Thermal Shutdown & Overcurrent Protection: Enhances reliability in harsh conditions.

TPS54316PWP Applications

• Industrial Automation: Powering sensors, PLCs, and control systems from 5V rails.
• Consumer Electronics: Used in portable devices, set-top boxes, and networking equipment.
• Embedded Systems: Ideal for FPGA, DSP, or microcontroller power supplies.
• Battery-Powered Devices: Efficiently steps down Li-ion or 5V inputs to 3.3V for low-power circuits.
• Legacy Designs: Suitable for maintaining existing systems requiring this specific regulator.

Conclusion of TPS54316PWP

The TPS54316PWP is a reliable, high-performance buck regulator for low-voltage applications, offering efficiency, integration, and thermal advantages. While obsolete, its 3A output, synchronous rectification, and compact form factor make it a pragmatic choice for legacy or cost-sensitive designs. Engineers should evaluate newer alternatives for forward-looking projects but can leverage this IC for proven performance in 3.3V power systems.

TPS54316PWP Documents

Download datasheets and manufacturer documentation for TPS54316PWP

EOL :

Product Discontinuance Notification (PDF)      

Images :

Mechanical Outline Drawing      

PCN :

Product Change Notification (PDF)      

Application Notes :

Adjusting Vout of Internal Compensated Low Input Voltage SWIFT DC/DC Converters (Rev. A)       Designing with the TPS54311 Through TPS54316 Synchronous Buck Regulators      

Technical Resources :

TPS54316xx TINA-TI Transient Reference Design      

SPICE Models :

TPS54316 Unencrypted PSpice Transient Model Package (Rev. A)       TPS54316xx TINA-TI Transient Spice Model