mic4722yml Micrel Semiconductor, mic4722yml Datasheet

mic4722yml

Manufacturer Part Number

mic4722yml

Description

Mic4722 3mm X 3mm 2.7mhz 3a Pwm Buck

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC4722YML.pdf (20 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MIC4722YML

Manufacturer:

MICREL/麦瑞

Quantity:

20 000

Current page: 1 of 20
Download datasheet (569Kb)

General Description

The Micrel MIC4722 is a high efficiency PWM buck (step-

down) regulator that provides up to 3A of output current.

The MIC4722 operates at 2.7MHz that makes it suitable

for next generation XDSL modems requiring operating

frequencies in excess of 2.4MHz and has proprietary

internal compensation that allows a closed loop bandwidth

of over 200KHz.

The low on-resistance internal p-channel MOSFET of the

MIC4722 allows efficiencies over 92%, reduces external

components count and eliminates the need for an

expensive current sense resistor.

The MIC4722 operates from 2.7V to 5.5V input and the

output can be adjusted down to 1V. The devices can

operate with a maximum duty cycle of 100% for use in low-

dropout conditions.

The MIC4722 is available in the exposed pad 12-pin

3mm x 3mm MLF

range from –40°C to +125°C.

Typical Application

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

September 2007

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

package with a junction operating

3A 2.7MHz Buck Regulator

MIC4722

Features

•

Applications

•

408

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

2.7 to 5.5V supply voltage

2.7MHz PWM mode

Output current to 3A

>92% efficiency

100% maximum duty cycle

Adjustable output voltage option down to 1V

Ultra-fast transient response

Ultra-small external components

Stable with a 0.47µH inductor and a 4.7µF output

capacitor

Fully integrated 3A MOSFET switch

Micropower shutdown

Thermal shutdown and current limit protection

Pb-free 12-pin 3mm x 3mm MLF

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

5V or 3.3V Point of Load Conversion

Telecom/Networking Equipment

Set Top Boxes

Storage Equipment

Video Cards

3mm x 3mm 2.7MHz 3A PWM Buck Regulator

MIC4722

package

M9999-090507-B

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