MIC2174 Micrel Semiconductor, MIC2174 Datasheet

MIC2174

Manufacturer Part Number

MIC2174

Description

Synchronous Buck Controller

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC2174.pdf (24 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC2174-1YMM

Manufacturer:

Micrel Inc

Quantity:

135

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC2174C-1YMM

Manufacturer:

Micrel Inc

Quantity:

135

Current page: 1 of 24
Download datasheet (578Kb)

General Description

The Micrel MIC2174 is a fixed frequency, synchronous

buck controller featuring adaptive on-time control. The

MIC2174 operates over an input supply range of 3V to

40V, switches at a constant frequency of 300kHz and is

capable of driving 25A of output current. The output

voltage is adjustable down to 0.8V.

A unique Hyper Speed Control™ architecture allows for

ultra fast transient response while reducing the output

capacitance and also makes High V

possible. The MIC2174 utilizes a adaptive T

controlled architecture. A UVLO is provided to ensure

proper operation under power-sag conditions to prevent

the external power MOSFET from overheating. A soft start

is provided to reduce inrush current. Foldback current limit

and “hiccup” mode short-circuit protection ensure FET and

load protection.

The MIC2174 is available in a 10-pin MSOP (MAX1954A-

compatible) package with a junction operating range from

–40°C to +125°C.

All support documentation can be found on Micrel’s web

site at: www.micrel.com.

____________________________________________________________________________________________________________

Typical Application

Hyper Speed Control is a trademark of Micrel. Inc.

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

September 2009

MIC2174: Synchronous Buck Controller Featuring Adaptive On-Time Control

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

/Low V

OUT

operation

ripple

Features

•

Applications

•

408

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

300kHz, Synchronous Buck Controller

Hyper Speed Control™ architecture enables

–

3V to 40V input voltage

Stable with zero-ESR output capacitor

300kHz switching frequency

Output down to 0.8V with ±1% FB accuracy

Up to 94% efficiency

Foldback current limit and “hiccup” mode short-circuit

protection

6ms Internal soft start

Thermal shutdown

Pre-bias output safe

–40°C to +125°C junction temperature range

Available in 10-pin MSOP package

Wide input power supply

Industrial Equipments

Distributed DC power systems

Automotive applications

PCs and servers

Featuring Adaptive On-Time Control

High delta V operation (V

Smaller output capacitors than competitors

MIC2174

100

12V to 3.3V Efficiency

www.DataSheet4U.com

OUTPUT CURRENT (A)

=40V and V

M9999-090409-B

OUT

VIN=5V

=0.8V)

Related parts for MIC2174

Related keywords

MIC2174 datasheet
MIC2174 data sheet
MIC2174 pdf datasheet
MIC2174 component
MIC2174 part
MIC2174 distributor
MIC2174 RoHS
MIC2174 datasheet download