Datasheet > MIC2537

MIC2537

更新时间： 2024-09-19 22:54:51

品牌	Logo	应用领域
麦瑞 - MICREL		开关
页数	文件大小	规格书
12页	90K
描述
Quad Power Distribution Switch Preliminary Information

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MIC2537 数据手册

MIC2537

Micrel

MIC2537

Quad Power Distribution Switch

Preliminary Information

General Description

Features

The MIC2537 is a cost-effective high-side power switch with

four independently controlled channels, optimized for bus-

poweredUniversalSerialBus(USB)applications. Fewexter-

nal components are necessary to satisfy USB requirements.

• Compliant to USB specifications

• 3V to 5.5V input

• 100mA minimum continuous load current per port

• 425mΩ typical on-resistance

• < 400mA current limit

• Individual open-drain fault flag leads

• 3V/5V-compatible enable inputs

• Active-high (-1) and active-low (-2) versions

• 100µA max. on-state supply current

• <1µA typical off-state supply current

• 16-lead SOP package

TheMIC2537satisfiesthefollowingUSBrequirements:each

switch channel supplies up to 100mA as required by USB

bus-powered downstream devices; fault current is limited to

typically 250mA, well below the UL 25VA safety require-

ments; and a flag output is available to indicate fault condi-

tions to the local USB controller. Soft start eliminates the

momentaryvoltagedropontheupstreamportthatmayoccur

when the switch is enabled in bus-powered applications.

• –40°C to 85°C operation

Additional features include thermal shutdown to prevent

catastrophic switch failure from high-current loads and 3.3V

and 5V logic compatible enable inputs.

Applications

• USB keyboards

The MIC2537 is available in active-high and active-low ver-

sions in a 16-lead SOP package.

• USB bus-powered docking stations

• Notebook docking stations

• Notebook PCs

• PDA

• General power distribution

Typical Application

Upstream V_BUS

4.75V to 5.25V

500mA max.

Ferrite

Bead

V_BUS

10k

10k 10k 10k

Downstream

MIC5207-3.3

D+

D–

33µF*

USB

3.3V USB Controller

LDO Regulator

MIC2537

0.01µF

Port 1

100mA max.

V+

OUT

ENA

GND

1µF

FLGA

ENB

4.7

µF

GND

0.1

µF

OUTA

V_BUS

D+

FLGB

ENC

OUTB

OUTC

Downstream

USB

Port 2

100mA max.

33µF*

D+

D–

FLGC OUTD

D–

GND

END

FLGD

GND

Bold lines indicate

0.1" wide, 1-oz. copper

high-current traces.

GND

V_BUS

D+

Downstream

USB

Port 3

100mA max.

D–

* 33µF, 16V tantalum or 100µF, 10V electrolytic per port

GND

V_BUS

D+

Downstream

USB

D–

Port 4

100mA max.

GND

Typical Bus-Powered Hub

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

December 1999

MIC2537

12 3 4 5 6 7...12

中文翻译

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与MIC2537相关器件

型号	品牌	获取价格	描述	数据表
MIC2537_11	MICREL	获取价格	Quad Power Distribution Switch Quad Power Distribution Switch
MIC2537-1BM	MICREL	获取价格	Quad Power Distribution Switch Preliminary Information
MIC2537-1BMTR	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 4 Channel, PDSO16, SOP-16
MIC2537-1YM	MICROCHIP	获取价格	IC USB SWITCH QUAD 16-SOIC
MIC2537-2BM	MICREL	获取价格	Quad Power Distribution Switch Preliminary Information
MIC2537-2BMTR	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 4 Channel, PDSO16, SOP-16
MIC2537-2YM-TR	MICROCHIP	获取价格	Power Supply Support Circuit, Fixed, 4 Channel, PDSO16
MIC25400	MICREL	获取价格	2A Dual Output PWM Synchronous Buck Regulator IC
MIC25400YML	MICROCHIP	获取价格	2A DUAL SWITCHING CONTROLLER, 1200kHz SWITCHING FREQ-MAX, QCC24
MIC25400YML	MICREL	获取价格	2A Dual Output PWM Synchronous Buck Regulator IC

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