Datasheet > MIC23163

MIC23163

更新时间： 2024-09-19 12:31:11

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
19页	1106K
描述
4MHz, 2A, 100% Duty Cycle Buck Regulator with HyperLight LoadÂ® and Power Good

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MIC23163 数据手册

MIC23163/4

4MHz, 2A, 100% Duty Cycle Buck Regulator

with HyperLight Load^®and Power Good

General Description

Features

The MIC23163/4 is

high-efficiency, 4MHz, 2A,

• Input voltage: 2.7V to 5.5V

• 100% duty cycle

• 2A output current

• Up to 93% peak efficiency

• 85% typical efficiency at 1mA

• Programmable soft-start with pre-bias start-up capability

• Power Good (PG) Indicator

• 4MHz PWM operation in continuous mode

• Ultra-fast transient response

synchronous buck regulator with HyperLight Load^®(HLL)

mode and maximum 100% duty cycle. HLL provides very-

high efficiency at light loads and ultra-fast transient

response which makes the MIC23163/4 perfectly suited for

supplying processor core voltages. An additional benefit of

this proprietary architecture is very low output ripple

voltage throughout the entire load range with the use of

small output capacitors. The tiny 2.0mm × 2.0mm DFN

package saves precious board space and requires only

three external components.

• Low ripple output voltage

• Fully-integrated MOSFET switches

• 0.1µA shutdown current

The MIC23163/4 is designed for use with a very small

0.47µH inductor and 10µF output capacitor that enables a

total solution size, less than 1mm height.

• Thermal shutdown and current-limit protection

• 10-pin 2.0mm × 2.0mm Thin DFN

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

• Disable pull down 180Ω (MIC23164 only)

The MIC23163/4 has a very low quiescent current of 33µA

and achieves as high as 85% efficiency at 1mA. At higher

loads, the MIC23163/4 provides a constant switching

frequency around 4MHz while achieving peak efficiencies

up to 93%. The MIC23164 incorporates an active

discharge feature that switches an 180Ω FET to ground to

discharge the output when the part is disabled.

Applications

• Cellular modems

• Mobile handsets

• Portable media/MP3 players

• Portable navigation devices (GPS)

• WiFi/WiMax/WiBro modules

• Digital cameras

The MIC23163/4 is available in 10-pin 2.0mm × 2.0mm

DFN package with an operating junction temperature

range from –40°C to +125°C.

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

• Wireless LAN cards

Typical Application

HyperLight Load is a registered 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 2.0

June 29, 2013

12 3 4 5 6 7...19

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与MIC23163相关器件

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