Datasheet > MIC2010_06

MIC2010_06

更新时间： 2024-11-28 07:17:07

品牌	Logo	应用领域
麦瑞 - MICREL		控制器
页数	文件大小	规格书
16页	691K
描述
USB Power Controller

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中文翻译

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MIC2010_06 数据手册

MIC2012

Micrel

MIC2012/MIC2072

USB Power Controller

General Description

Features

TheMIC2012isadualchannelUSBpowerswitchdesignedto

supportthepowerdistributionrequirementsforUSBWakeup

from the ACPI S3 state. The MIC2012 will directly switch its

two outputs between a 5V main supply and a 5V auxiliary

supply normally provided in ATX style power supplies.

• Compliant to USB power distribution speciﬁcations

• UL Recognized Component

• Two completely independent switches

• Integrated switching matrix supports ACPI S0/S3 state

transitions without external FET circuits

• Make-before-break switching ensures glitch-free

transitions

The MIC2012 will adjust its current-limit threshold according

to theACPI state it is in. In the normal active S0 state the cur-

rent-limit is set at 500mAminimum per channel satisfying the

USB continuous output current speciﬁcation. In the S3 state

the current-limit can be reduced to only 100mA per channel

to minimize the current that is supplied by the auxiliary supply

thereby ensuring that voltage regulation is maintained even

during fault conditions.

TheMIC2012providesmake-before-breakswitchingtoensure

glitch-free transitions between the S3 and S0 states. Each

channel is also thermally isolated from the other so that a

fault in one channel does not effect the other. FAULT status

output signals are also provided indicating overcurrent and

thermal shutdown conditions.

• No back-feed of auxiliary supply onto main supply dur-

ing standby mode

• Bi-level current-limit preserves auxiliary supply voltage

regulation in standby mode

• Thermally isolated channels

• Thermal shutdown protection

• Fault status outputs with ﬁlter prevents false assertions

during hot-plug events

• Latched thermal shutdown options with auto-reset

(MIC2072)

• Undervoltage lockout

Applications

The MIC2072 option latches the output off upon detecting

an overcurrent condition for more than 5ms minimum. The

output can be reset by either toggling the EN inputs of the

MIC2072-1, -2 or by removing the load. Latching the output

offprovidesacircuitbreakermodeofoperationwhichreduces

power consumption during fault conditions.

• Desktop PCs

• Notebook PCs

• Notebook Docking stations

• LAN Servers

• PC Motherboards

Typical Application

ATX Power Supply

5V MAIN

V_BUS

5V STANDBY

Downstream

D+

D–

MIC2012P

USB

Port 1

OUT1

OUT2

MAIN

AUX

GND

100F

S3 Control

S3#

V_BUS

D+

D–

FAULT1#

FAULT2#

GND

Downstream

USB

Port 2

100F

GND

82801AA or Equivalent

SLP S3#

SLP S5#

Overcurrent Port 1

OC0

OC1

Figure 1. USB Wakeup with Control Input

UL Recognized Component

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

January 2005

MIC2012/2072

12 3 4 5 6 7...16

中文翻译

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与MIC2010_06相关器件

型号	品牌	获取价格	描述	数据表
MIC2010-1CQS	MICROCHIP	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
MIC2010-1PCQS	MICREL	获取价格	USB Power Controller
MIC2010-1PZQS	MICREL	获取价格	USB Power Controller
MIC2010-1PZQSTR	MICREL	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, LEAD FREE, QSOP-16
MIC2010-2PCQS	MICREL	获取价格	USB Power Controller Advance Information
MIC2010-2PZQS	MICREL	获取价格	Power Supply Support Circuit, Adjustable, 2 Channel, PDSO16, LEAD FREE, QSOP-16
MIC2012	MICREL	获取价格	USB Power Controller Advance Information
MIC2012	MICROCHIP	获取价格	The MIC2012 is a dual channel USB power switch designed to support the power distribution
MIC2012_05	MICREL	获取价格	USB Power Controller
MIC2012-1PCQS	MICREL	获取价格	USB Power Controller

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