Datasheet > MIC4930

MIC4930

更新时间： 2024-01-21 03:47:01

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
17页	1128K
描述
Hyper Speed Control 3A Buck Regulator

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MIC4930 数据手册

MIC4930

Hyper Speed Control™ 3A Buck Regulator

Features

General Description

 Input voltage: 2.7V to 5.5V

 3A output current

 Up to 95% efficiency

 Up to 3.3MHz operation

 Safe start-up into a pre-biased output

 Power Good output

 Ultra-fast transient response

 Low output voltage ripple

 Low R_DS(ON)integrated MOSFET switches

 0.01µA shutdown current

 Thermal shutdown and current limit protection

 Output voltage as low as 0.7V

 3mm × 4mm DFN-10L

The MIC4930 is a high-efficiency, 3A synchronous buck

regulator with ultra-fast transient response perfectly suited

for supplying processor core and I/O voltages from a 5V or

3.3V bus. The MIC4930 provides a switching frequency up

to 3.3MHz while achieving peak efficiencies up to 95%. An

additional benefit of high-frequency operation is very low

output ripple voltage throughout the entire load range with

the use of a small output capacitor. The MIC4930 is

designed for use with a very small inductor, down to 1µH,

and an output ceramic capacitor as small as 10µF without

the need for external ripple injection. A wide range of

output capacitor types and values can also be

accommodated.

The MIC4930 supports safe start-up into a pre-biased

output.

 –40C to +125C junction temperature range

The MIC4930 is available in a 10-pin 3mm × 4mm DFN

package with an operating junction temperature range

from –40°C to +125°C. The MIC4930 is pin-to-pin

compatible with the 5A-rated MIC4950YFL.

Applications

 DTVs

 Set-top boxes

 Printers

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

 DVD players

 Distributed power supplies

Typical Application

Hyper Speed Control is a trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

Revision 1.1

March 20, 2014

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