General Description

MIC45205 is a synchronous step-down regulator

module, featuring a unique adaptive ON-time control

architecture. The module incorporates a DC/DC

controller, power MOSFETs, bootstrap diode, bootstrap

capacitor, and an inductor in a single package;

simplifying the design and layout process for the end

user.

This highly integrated solution expedites system

design and improves product time-to-market. The

internal MOSFETs and inductor are optimized to

achieve high efficiency at a low output voltage. The fully

optimized design can deliver up to 6A current under a

wide input voltage range of 4.5V to 26V, without

requiring additional cooling.

The MIC45205-1 uses Microchip’s HyperLight Load®

(HLL) and the MIC45205-2 uses Microchip’s Hyper

Speed Control® architecture that enables ultra-fast

load transient response, allowing for a reduction of

output capacitance.

The MIC45205 offers 1 output accuracy that can be

adjusted from 0.8V to 0.85 x VIN with two external

resistors. Additional features include thermal shutdown

protection, input undervoltage lockout, adjustable

current-limit, and short-circuit protection. The

MIC45205 allows for safe start-up into a pre-biased output.

Features

• No Compensation Required

• Up to 6A Output Current

• >93 Peak Efficiency

• Output Voltage: 0.8V to 0.85 x VIN with ±1

Accuracy

• Adjustable Switching Frequency from 200 kHz to

600 kHz

• Enable Input and Open-Drain Power Good Output

• HyperLight Load (MIC45205-1) Improves Light

Load Efficiency

• Hyper Speed Control (MIC45205-2) Architecture

Enables Fast Transient Response

• Supports Safe Startup into Pre-Biased Output

• –40°C to +125°C Junction Temperature Range

• Thermal Shutdown Protection

• Short-Circuit Protection with Hiccup Mode

• Adjustable Current-Limit

• Available in 52-pin 8 mm × 8 mm × 3 mm B1QFN Package

Applications

• High Power Density Point-of-Load Conversion

• Servers, Routers, Networking, and Base Stations

• FPGAs, DSP, and Low-Voltage ASIC Power

Supplies

• Industrial and Medical Equipment

MIC45205-1YMP-TR属于电源 - 板安装 > 直流转换器。微芯科技股份有限公司制造生产的MIC45205-1YMP-TR直流转换器一种旨在将直流电压输入电平改变为一个或多个不同的直流电压输出电平的装置。