Datasheet > MIC2199

MIC2199

更新时间： 2024-01-23 06:45:29

品牌	Logo	应用领域
麦瑞 - MICREL		转换器
页数	文件大小	规格书
15页	223K
描述
300kHz 4mm 】 4mm Synchronous Buck Converter

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MIC2199 数据手册

MIC2199

Micrel

MIC2199

300kHz 4mm × 4mm Synchronous Buck Converter

General Description

Features

The MIC2199 is a high-power 300kHz synchronous buck

DC-to-DC controller housed in a small 4mm × 4mm MLF™

12-lead package. The MIC2199 operates from a wide 4.5V to

32V input and can be programmed for output voltages from

0.8V to 6V. The wide input voltage capability makes the

MIC2199 an ideal solution for point-of-load DC-to-DC con-

version in 5V, 12V, 24V, and 28V systems.

• 4.5V to 32V input range

• 4mm × 4mm MLF™ package

• 300kHz PWM operation

• 95% efficiency

• Output voltage adjustable down to 0.8V

• 20A output current capability

• Drives all N-Channel MOSFETs

• Logic controlled micropower shutdown

• Cycle-by-cycle current limiting

• Adjustable undervoltage lockout

• Frequency foldback overcurrent protection

The 300kHz switching frequency allows the use of a small

inductorandsmalloutputcapacitors.ThecurrentmodePWM

control along with the external COMP pin allows for ease of

stability compensation and fast transient response across a

wide range of applications.

Applications

• Point-of-load DC-to-DC conversion from 5V, 12V,

24V, 28V supplies

An all N-Channel synchronous architecture and powerful

output drivers allow up to 20A of output current capability.

For smaller external components, refer to the 500kHz

MIC2198.

• Telecom equipment

• Wireless modems

• Servers

• Base stations

The MIC2199 is available in a 12-pin 4mm × 4mm MLF™

package with a junction temperature range from –40°C to

125°C.

Typical Application

100.0

95.0

90.0

V_OUT= 3.3V

85.0

(A)

LOAD

Efficiency for

= 5V and V = 3.3V

4.5V–24V to 3.3V/7A Converter

OUT

MLF and MicroLeadFrame are trademarks of Amkor Technology, 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

November 2004

MIC2199

12 3 4 5 6 7...15

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