Datasheet > MIC261203Z

MIC261203Z

更新时间： 2023-12-06 20:11:36

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
29页	1355K
描述
The MIC261203-ZA is a constant-frequency, synchronous buck regulator featuring a unique adaptive o

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MIC261203Z 数据手册

MIC261203-ZA

28V, 12A, Hyper Speed Control™

Synchronous DC-to-DC Buck Regulator

SuperSwitcher™ II

General Description

The Micrel MIC261203-ZA is

constant-frequency,

synchronous buck regulator featuring a unique adaptive

on-time control architecture. The MIC261203-ZA operates

over an input supply range of 4.5V to 28V and provides a

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

voltage is adjustable down to 0.6V with a guaranteed

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

frequency of 600kHz.

SuperSwitcher™ II

Features

• Hyper Speed Control architecture enables

− High Delta V operation (V_IN= 28V and V_OUT= 0.6V)

− Small output capacitance

Micrel’s Hyper Speed Control architecture allows for

ultra-fast transient response while reducing the output

• 4.5V to 28V voltage input

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

)

• 12A output current capability and 95% peak efficiency

• Adjustable output from 0.6V to 5.5V

• ±1% feedback accuracy

operation possible. This adaptive t_ONripple control

architecture combines the advantages of fixed-frequency

operation and fast transient response in a single device.

The MIC261203-ZA offers a full suite of 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.

• Any Capacitor stable - zero-to-high ESR

• 600kHz switching frequency

• No external compensation

• Power Good (PG) output

• Foldback I-limit and “hiccup” short-circuit protection

• Supports safe startup into a pre-biased load

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

• 28-pin 5mm × 6mm QFN package

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Applications

• Distributed POL and telecom/networking infrastructure

• Printers, scanners, graphic and video cards

• Set-top boxes, gateways and routers

Typical Application

Efficiency (V_IN= 12V)

vs. Output Current

100

5.0V

3.3V

2.5V

1.8V

1.5V

1.2V

1.0V

0.9V

0.8V

V_IN= 12V

OUTPUT CURRENT (A)

Hyper Speed Control, SuperSwitcher, 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

Revision 1.1

July 22, 2014

12 3 4 5 6 7...29

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与MIC261203Z相关器件

型号	品牌	获取价格	描述	数据表
MIC261203ZA	MICREL	获取价格	28V, 12A Hyper Speed Control Synchronous DC/DC Buck Regulator
MIC261203-ZAYJL	MICREL	获取价格	28V, 12A Hyper Speed Control Synchronous DC/DC Buck Regulator
MIC261203-ZAYJL-TR	MICROCHIP	获取价格	IC REG BUCK ADJ 12A SYNC 28MLF
MIC261203-ZYJL-TR	MICROCHIP	获取价格	Switching Regulator, 750kHz Switching Freq-Max
MIC2619	MICREL	获取价格	1.2MHz PWM Boost Converter with OVP
MIC2619	MIC	获取价格	1.2MHz PWM Boost Converter with OVP
MIC2619	MICROCHIP	获取价格	The MIC2619 is a 1.2MHz pulse width modulated (PWM) step-up switching regulator that is
MIC2619_11	MICREL	获取价格	1.2MHz PWM Boost Converter with OVP
MIC2619YD6	MICREL	获取价格	1.2MHz PWM Boost Converter with OVP
MIC2619YD6-TR	MICROCHIP	获取价格	SWITCHING REGULATOR

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