MAX8586ETA MAXIM [Maxim Integrated Products], MAX8586ETA Datasheet

MAX8586ETA

Manufacturer Part Number

MAX8586ETA

Description

Single 1.2A USB Switch in 3mm x 3mm TDFN

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX8586ETA.pdf (11 pages)

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Download datasheet (245Kb)

The MAX8586 single current-limited switch controls up to

1.2A to power USB applications and has multiple protec-

tion features including thermal shutdown, internal current

limiting, and reverse current protection. The thermal shut-

down limits junction temperature during a prolonged

short or overload condition. The internal current-limiting

circuitry protects the input supply against overload and

is programmable using an external resistor. The

MAX8586 meets all IEC specifications for USB ports.

The IC latches off when the output experiences a short

circuit for more than 20ms, saving system power. Auto-

restart tests the shorted output with a 25mA current to

determine if the short still exists. Once the short is

removed, the MAX8586 automatically restarts the out-

put. An open-drain fault signal notifies the system that

the internal current limit has been reached. A 20ms

fault-blanking feature allows the circuit to ignore

momentary faults such as those caused when hot-

swapping into a capacitive load. An ENRESET input is

available to disable the auto-restart function.

The MAX8586 features a SEL input that programs ON

to be either active high or active low. The IC is supplied

in a space-saving, 8-pin, 3mm x 3mm TDFN package.

Pin Configuration appears at end of data sheet.

19-3449; Rev 0; 11/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

USB Ports/Hubs

Desktop/Notebook Computers

PDAs and Palmtop Computers

Docking Stations

________________________________________________________________ Maxim Integrated Products

General Description

Applications

Single 1.2A USB Switch in

MAX8586ETA

INPUT SUPPLY

2.75V TO 5.5V

Reverse Current Protection

Programmable Current Limit Up to 1.2A

Accurate Current Limit

Selectable Auto-Restart when Fault Is Removed

Thermal-Overload Protection

Selectable Active-High/Low ON Input

Built-In 20ms Fault Blanking

Compliant with All USB Specifications

2.75V to 5.5V Input Supply Range

FAULT Indicator Output

15kV ESD Protection (with Caps)

UL Listing Pending

Tiny 8-Pin 3mm x 3mm TDFN Package

SELECTION

INDICATOR

POLARITY

CONTROL

OUTPUT

ON/OFF

FAULT

PART

3mm x 3mm TDFN

Typical Operating Circuit

-40 C to +85 C

TEMP RANGE

SEL

FAULT

Ordering Information

MAX8586

GND

ENRESET

OUT

ISET

3mm x 3mm

PACKAGE

(T833-2)

8 TDFN

PIN-

Features

OUTPUT SUPPLY

AUTO-RESTART

UP TO 1.2A

ON/OFF

MARK

AMH

TOP

Related parts for MAX8586ETA

MAX8586ETA Summary of contents

Page 1

... Built-In 20ms Fault Blanking Compliant with All USB Specifications 2.75V to 5.5V Input Supply Range FAULT Indicator Output 15kV ESD Protection (with Caps) UL Listing Pending Tiny 8-Pin 3mm x 3mm TDFN Package PART Applications MAX8586ETA INPUT SUPPLY 2.75V TO 5.5V OUTPUT FAULT INDICATOR ON/OFF POLARITY SELECTION ...

Page 2

Single 1.2A USB Switch in 3mm x 3mm TDFN ABSOLUTE MAXIMUM RATINGS IN, ON, SEL, OUT, FAULT, ISET, ENRESET to GND ..-0. OUT.....................................................................-6V to +6V FAULT Sink Current ............................................................20mA Continuous Power Dissipation 8-Pin 3mm x 3mm ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 5V SEL ENRESET Typical values are +25°C, unless otherwise specified. Note 1) A PARAMETER Turn-On Delay Output Rise Time Turn-Off Delay from ON ...

Page 4

Single 1.2A USB Switch in 3mm x 3mm TDFN (Typical Application Circuit QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE ...

Page 5

Application Circuit FAULT-BLANKING TIME vs. TEMPERATURE -40 - TEMPERATURE (°C) OVERLOAD RESPONSE INTO 2Ω FAULT OUT FAULT ...

Page 6

Single 1.2A USB Switch in 3mm x 3mm TDFN (Typical Application Circuit SWITCH TURN-OFF WAVEFORM INTO 5Ω LOAD MAX8586 toc17 V OUT V ON 1ms/div STARTUP INTO 470µF FAULT V IN AC-COUPLED I ...

Page 7

PIN NAME ON Polarity Selector Input. Drive SEL high to select ON for an active-high enable. Drive SEL to GND to select 1 SEL ON for an active-low enable. Current-Limit Programming Input. Connect a resistor from ISET to GND to ...

Page 8

Single 1.2A USB Switch in 3mm x 3mm TDFN Detailed Description Current-Limit Protection The MAX8586 uses two methods to protect the circuit from overcurrent conditions. Continuous current limiting has tighter accuracy but slower response time com- pared to short-circuit limiting. ...

Page 9

Thermal Shutdown When the MAX8586 die temperature exceeds +160°C, the switch turns off and FAULT goes low. Thermal shut- down does not utilize the 20ms fault-blanking timeout period. When the junction temperature cools by 15°C, the switch turns on again ...

Page 10

Single 1.2A USB Switch in 3mm x 3mm TDFN INPUT SUPPLY 2.75V TO 5.5V R1 OUTPUT 100kΩ FAULT INDICATOR ON/OFF POLARITY SELECTION CONTROL/ ON/OFF Figure 1. Typical Application Circuit Because the package power dissipation is 1951mW, the MAX8586 die temperature ...

Page 11

For the latest package outline information go to www.maxim-ic.com/packages.) PIN 1 INDEX AREA COMMON DIMENSIONS MIN. SYMBOL A 0.70 D 2.90 E 2.90 A1 0.00 L ...

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