آی سی TPS54331 پکیج SMD

آی سی TPS54331 پکیج SMD  به مجموعه‌ای از مدارات الکترونیکی اطلاق می‌گردد که با استفاده از موادنیمه‌رسانا (عموماً سیلیکون همراه با میزان کنترل شده‌ای ناخالصی) در ابعادی کوچک (معمولاً کمتر از یک سانتی متر مربع) ساخته می‌شود.

• وزن:0.11

Introduction

The TPS54331 device is a 28-V, 3-A nonsynchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-μA shutdown supply-current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors.

A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 device is available in an 8-pin SOIC package and 8-pin SO PowerPAD package that have been internally optimized to improve thermal performance.

Features

3.5 to 28-V Input Voltage Range

Adjustable Output Voltage Down to 0.8 V

Integrated 80-mΩ High-Side MOSFET Supports up to 3-A Continuous Output Current

High Efficiency at Light Loads With a Pulse Skipping Eco-mode

Fixed 570 kHz Switching Frequency

Typical 1-μA Shutdown Quiescent Current

Adjustable Slow-Start Limits Inrush Currents

Programmable UVLO Threshold

Overvoltage Transient Protection

Cycle-by-Cycle Current Limit, Frequency Fold Back, and Thermal Shutdown Protection

Applications

Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers

Industrial and Car-Audio Power Supplies

5-V, 12-V, and 24-V Distributed Power Systems