Datasheet > 电源电路 > 开关式稳压器或控制器> MIC23250-C4YMT

MIC23250-C4YMT

更新时间： 2024-09-20 03:24:15

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
15页	590K
描述
4MHz Dual 400mA Synchronous Buck Regulator with HYPER LIGHT LOAD⑩

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MIC23250-C4YMT 数据手册

MIC23250

4MHz Dual 400mA Synchronous Buck

Regulator with HYPER LIGHT LOAD™

General Description

Features

The MIC23250 is a high efficiency 4MHz dual 400mA

synchronous buck regulator with Hyper Light Load™. Hyper

Light Load™ provides all the advantages of standard light

load modes, such as low quiescent current and high

efficiency but also allows the use of very small output

capacitors to maintain low output ripple voltage throughout

the entire load range. This benefit is not possible with other

light load mode types as they trade off control speed for low

standby currents. With Hyper Light Load™, the output

capacitor can be reduced by up to a factor of 20 saving cost

and valuable board space. The tiny package (2mm x 2mm

Thin MLF^®) of MIC23250 also saves crucial board space by

using only six external components while regulating two

independent outputs up to 400mA each.

• Input voltage range: 2.7V to 5.5V

• Dual output current 400mA/400mA

• Hyper Light Load™ mode

–

35µA dual quiescent current

–

1µH inductor with a 4.7µF capacitor

• 4MHz in PWM operation

• Ultra fast transient response

• Low voltage output ripple

–

20mVpp in Hyper Light Load™ mode

–

3mV output voltage ripple in full PWM mode

• Up to 94% peak efficiency and 85% efficiency at 1mA

• Fully integrated MOSFET switches

• Micropower shutdown

• Thermal shutdown and current limit protection

• Fixed output:10-pin 2mm x 2mm Thin MLF^®

• Adjustable output:12-pin 2.5mm x 2.5mm Thin MLF^®

(Available in Q2/Q3 2008)

The device is designed for use with a 1µH inductor and a

4.7µF output capacitor that enables a sub-1mm height.

The MIC23250 has a very low quiescent current of 35µA

and can achieve over 85% efficiency at 1mA. At higher

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

loads the MIC23250 provides

frequency around 4MHz while providing peak efficiencies up

to 94%.

a constant switching

Applications

The MIC23250 fixed output voltage option is available in a

10-pin 2mm x 2mm Thin MLF^®with a junction operating

range from –40°C to +125°C. The adjustable output voltage

option will soon be available in Q2/Q3 2008.

• Mobile handsets

• Portable media players

• Portable navigation devices (GPS)

• WiFi/WiMax/WiBro modules

• Digital cameras

• Wireless LAN cards

• USB Powered Devices

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

Efficiency V

= 1.8V

OUT

100

VIN = 3.0V

VIN = 2.7V

VIN = 4.2V

VIN = 3.6V

L = 1µH

= 4.7µF

OUT

100

1000

LOAD (mA)

Hyper Light Load is a trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered 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

M9999-121707-A

December 2007

12 3 4 5 6 7...15

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与MIC23250-C4YMT相关器件

型号	品牌	获取价格	描述	数据表
MIC23250-C4YMTTR	MICREL	获取价格	1A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO10, 2 X 2 MM, GREEN, MLF-10
MIC23250-C4YMT-TR	MICROCHIP	获取价格	1A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO10
MIC23250-G4YMT	MICREL	获取价格	4MHz Dual 400mA Synchronous Buck Regulator wi
MIC23250-G4YMTTR	MICROCHIP	获取价格	1A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO10, 2 X 2 MM, GREEN, MLF-10
MIC23250-G4YMT-TR	MICROCHIP	获取价格	1A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO10
MIC23250-GFHYMT	MICREL	获取价格	4MHz Dual 400mA Synchronous Buck Regulator wi
MIC23250-GFHYMTTR	MICROCHIP	获取价格	1A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO10, 2 X 2 MM, GREEN, MLF-10
MIC23250-M4YMT-TR	MICROCHIP	获取价格	IC REG BCK 1.2V/2.8V 0.4A 10TMLF
MIC23250-S4YMT	MICREL	获取价格	4MHz Dual 400mA Synchronous Buck Regulator with HyperLight Load
MIC23250-S4YMTTR	MICROCHIP	获取价格	1A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO10, 2 X 2 MM, GREEN, MLF-10

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