TPS51225RUKT - Texas Instruments

Manufacturer Part Number

TPS51225RUKT

Manufacturer

Texas Instruments

Introduction

The TPS51225RUKT is a dual synchronous step-down controller with two LDOs, designed for notebook and mobile platforms power management.

Product Features and Performance

Dual synchronous step-down (buck) controllers

Integrated two Low-Dropout Regulators (LDOs)

Support for D-CAP™ mode for fast transient response

Adaptive on-time control architecture

Selectable 300kHz or 355kHz switching frequency

Efficient power conversion enabling prolonged battery life

Over-voltage and under-voltage protection

Thermal shutdown protection

Soft start and enable functions for controlled startup behavior

Suitable for powering processor cores, graphics, and system I/O power rails

Product Advantages

Enhanced power efficiency

Small 20-WQFN package to reduce PCB space

Integrated features to minimize external component count

Robust thermal management features

Built-in protections to enhance system reliability

Key Technical Parameters

Synchronous Buck Topology: Yes (2x)

Linear Regulators: 2

Switching Frequency: 300kHz, 355kHz

Output 1 & 2: Controller

Output 3: 3V, 100mA

Supply Voltage: 5.5V ~ 24V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Package / Case: 20-WFQFN Exposed Pad

Supplier Device Package: 20-WQFN (3x3)

Quality and Safety Features

Overvoltage protection (OVP)

Undervoltage protection (UVP)

Thermal shutdown (TSD)

Protection from overcurrent and short circuits

High thermal performance package

Compatibility

Compatible with a wide range of input capacitors and output capacitors

Application Areas

Notebook computers

Mobile platforms

Low-power embedded systems

Portable electronic devices

Product Lifecycle

Active product status

Not nearing discontinuation

Replacement parts are likely readily available

Potential future upgrades may exist within the same product family

Several Key Reasons to Choose This Product

Texas Instruments’ proven reliability in power management

High integration reduces system complexity and BOM cost

D-CAP™ mode enables fast transient response, ideal for CPU/VGPU power delivery

Flexible switching frequency allows optimization for efficiency and component size

Wide input voltage range accommodates a variety of power sources

Advanced thermal and overcurrent protections enhance system longevity

Industry-standard package and pinout for ease of design and manufacturing

Suitable for a wide range of applications, empowering designers to standardize across multiple platforms