Microchip MIC45404 Handleiding

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 2015-2017 Microchip Technology Inc.DS20005478B-page 1

MIC45404

Features

•Input Voltage Range: 4.5V to 19V

•Output Current: Up to 5A

•82% Peak Efficiency at 12 VIN, 0.9 VOUT

•Pin-Selectable Output Voltages: 0.7V, 0.8V, 0.9V,

1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V

• ±1% Output Voltage Accuracy

•Supports Safe Pre-Biased Start-Up

•Pin-Selectable Current Limit

•Pin-Selectable Switching Frequency

•Internal Soft Start

•Thermal Shutdown

•Hiccup Mode Short-Circuit Protection

•Available in a 54-Lead 6 mmx10 mm QFN

Package

•Ultra-Low Profile: 2.0 mm Height

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

Applications

•Servers, Data Storage, Routers and Base Stations

•FPGAs, SSD, DSP and Low-Voltage ASIC Power

General Description

The MIC45404 device is an ultra-low profile, synchro-

nous step-down regulator module, featuring a unique

2.0 mm height. The module incorporates a DC-to-DC

regulator, bootstrap capacitor, high-frequency input

capacitor and an inductor in a single package. The

module pinout is optimized to simplify the Printed

Circuit Board (PCB) layout process.

This highly-integrated solution expedites system

design and improves product time to market. The inter-

nal MOSFETs and inductor are optimized to achieve

high efficiency at low output voltage. Due to the fully

optimized design, MIC45404 can deliver up to 5A

current with a wide input voltage range of 4.5V to 19V.

The MIC45404 is available in a 54-lead 6 mm x

10mmx 2.0 mmQFN package with a junction operat-

ing temperature range from -40C to +125C, which

makes an excellent solution for systems in which PCB

real-estate and height are important limiting factors,

and air flow is restricted.

Typical Application

VIN

OUT

VIN

4.5V to 19V

FREQ

VDDA

VOSET1

PG

GND

GND

VOSET0

COMP

EN/DLY

OUTSNS

MIC45404

V

DDA

Power-Good

Enable

VDDA

VDDA

Output

Voltage

Selection

VDDA

Frequency

Selection

ILIM

VDDA

Current Limit

Selection

VOUT

MIC45404 12V 5A DC-to-DC Converter

19V 5A Ultra-Low Profile DC-to-DC Power Module

Product specificaties