Datasheet > MIC24055

MIC24055

更新时间： 2024-09-20 12:31:15

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
29页	1792K
描述
12V, 12A High-Efficiency Buck Regulator

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MIC24055 数据手册

MIC24055

12V, 12A High-Efficiency Buck Regulator

SuperSwitcher II

General Description

Features

•

Hyper Speed Control architecture enables

- High delta V operation (V_IN= 19V and V_OUT= 0.8V)

- Small output capacitance

Input voltage range: 4.5V to 19V

Output current up to 12A

The Micrel MIC24055 is

constant-frequency,

synchronous buck regulator featuring a unique adaptive

on-time control architecture. The MIC24055 operates over

an input supply range of 4.5V to 19V and provides a

regulated output of up to 12A of output current. The output

voltage is adjustable down to 0.8V with a guaranteed

accuracy of ±1%, and the device operates at a switching

frequency of 600kHz.

•

Up to 95% efficiency

Adjustable output from 0.8V to 5.5V

±1% feedback accuracy

Micrel’s Hyper Speed Control architecture allows for

ultra-fast transient response while reducing the output

capacitance and also makes (High V_IN)/(Low V_OUT

operation possible. This adaptive t_ONripple control

architecture combines the advantages of fixed-frequency

operation and fast transient response in a single device.

Any Capacitor™ Stable – zero-to-high ESR

600kHz switching frequency

)

No external compensation

Power good (PG) output

Foldback current-limit and “hiccup mode” short-circuit

protection

Supports safe startup into a pre-biased load

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

Available in 28-pin 5mm × 6mm QFN package

The MIC24055 offers a full suite of protection features to

ensure protection of the IC during fault conditions. These

include undervoltage lockout to ensure proper operation

under power-sag conditions, internal soft-start to reduce

inrush current, foldback current limit, “hiccup mode” short-

circuit protection and thermal shutdown. An open-drain

power good (PG) pin is provided.

•

The 12A HyperLight Load^®part, MIC24056, is also

available on Micrel’s web site.

Applications

•

Server and work stations

Routers, switches and telecom equipment

Base station

All support documentation can be found on Micrel’s web

site at: www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

Efficiency (VIN = 12V)

vs. Output Current

100

5.0V

3.3V

2.5V

1.8V

1.5V

1.2V

1.0V

0.9V

0.8V

VIN = 12V

12 15

OUTPUT CURRENT (A)

HyperLight Load is a registered trademark of Micrel, Inc.

Hyper Speed Control, SuperSwitcher II, and Any Capacitor are trademarks 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

M9999-120712-A

December 2012

12 3 4 5 6 7...29

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与MIC24055相关器件

型号	品牌	获取价格	描述	数据表
MIC24055YJL	MICREL	获取价格	12V, 12A High-Efficiency Buck Regulator
MIC24055YJL-TR	MICROCHIP	获取价格	SWITCHING REGULATOR
MIC24056	MICREL	获取价格	12V, 12A High-Efficiency Buck Regulator
MIC24056	MICROCHIP	获取价格	The MIC24056 is a constant-frequency, synchronous DC/DC buck regulator featuring adaptive
MIC24056YJL-TR	MICROCHIP	获取价格	SWITCHING REGULATOR
MIC24066	MICROCHIP	获取价格	The MIC24066/7 are a family of high performance 36V synchronous switching regulators with
MIC24067	MICROCHIP	获取价格	The MIC24066/7 are a family of high performance 36V synchronous switching regulators with
MIC24085	MICREL	获取价格	Integrated FET Buck Regulator
MIC24085AYML	MICROCHIP	获取价格	Switching Regulator
MIC24085AYML	MICREL	获取价格	Switching Regulator

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