MAX5916EUI+【PDF 1/25 页】IC HOT-SWAP CTRLR DUAL 28-TSSOP

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Sheet目录43

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General Description

The MAX5915/MAX5915A/MAX5916/MAX5916A dual

PCI 2.2 hot-swap controllers allow for safe insertion and

removal of two PCI cards into live PCI slots or back-

planes by limiting the inrush current at startup. After

startup, these devices provide protection against short-

circuit, overcurrent, and undervoltage conditions.

The MAX5915/MAX5915A/MAX5916/MAX5916A pro-

vide independent power controls for +3.3V, +5V, ?2V,

and +3.3V auxiliary supplies of two PCI cards. These

devices provide intelligent selective thermal shutdown

control that shuts down the channel with an overcurrent

fault. All devices include internal power MOSFETs for the

+12V, -12V, and +3.3V auxiliary outputs. These devices

use internal charge pumps to activate the gates of the

internal FETs controlling the +3.3V auxiliary supply.

Internal FETs and current-sense circuitry regulate the

?2V and the +3.3V auxiliary supplies. Channels A and B

operate independently, allowing a single device to moni-

tor two PCI card slots.

The MAX5915/MAX5915A offer latched fault protection

and the MAX5916/MAX5916A offer autorestart fault pro-

tection. The devices are available in the low-profile

28-pin TSSOP package.

Features

f PCI 2.2 Compliant

f Independent Power Controls for +3.3V, +5V, ?SPAN class="pst MAX5916EUI-_2335388_2">12V,

and +3.3V Auxiliary Supplies of Two PCI Cards

f Internal MOSFET Switches for ?SPAN class="pst MAX5916EUI-_2335388_2">12V and +3.3V

Auxiliary Outputs

f Separate ON/OFF Control Input for Each Channel

f Independent +3.3V Auxiliary Output ON/OFF

Control

f Overcurrent Foldback with Timeout and Shutdown

Protection for ?/SPAN>12V and +3.3V Auxiliary Rails with

Status Report

f Brick Wall with Timeout and Shutdown Protection

for +5V and +3.3V Rails with Status Report

f Output Undervoltage Monitoring for +3.3V, +5V,

+12V, and +3.3V Auxiliary Rails with Status Report

f +3.3V Auxiliary Autorestart

f Intelligent Selective Thermal Shutdown Control

Shuts Down Only the Channel with an Overcurrent

Fault

f 28-Pin TSSOP Package

Dual PCI 2.2 Hot-Swap Controllers

________________________________________________________________ Maxim Integrated Products 1

19-2420; Rev 2; 9/05

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

1-888-629-4642, or visit Maxims website at www.maxim-ic.com.

Ordering Information

Applications

PCI 2.2 Server

PCI Server

RAID

PART

TEMP RANGE

PIN-PACKAGE

MAX5915EUI*

-40癈 to +85癈

28 TSSOP

MAX5915UUI

0癈 to +85癈

28 TSSOP

MAX5915AEUI*

-40癈 to +85癈

28 TSSOP

MAX5915AUUI

0癈 to +85癈

28 TSSOP

MAX5916EUI*

-40癈 to +85癈

28 TSSOP

MAX5916UUI

0癈 to +85癈

28 TSSOP

MAX5916AEUI*

-40癈 to +85癈

28 TSSOP

MAX5916AUUI

0癈 to +85癈

28 TSSOP

Selector Guide, Pin Configuration, Functional Diagram, and

Typical Operating Circuit appear at end of data sheet.

Typical Application Circuit

+12VIN

+3.3V

+5V

-12VIN

3.3VGATE_ 3.3VSEN_

3.3VO_ 5VGATE_ 5VSEN_

FAIRCHILD

FDS6670A

FAIRCHILD

FDS6670A

0.005&

10k&

5VO_

470礔

47礔

3.3VAUXIN

3.3VAUXO_

PGOOD_

GND

ON_

OFF

AUXON_

+12VO_

-12VO_

MAX5915

MAX5915A

MAX5916

MAX5916A

470礔

4.7礔ゥ 0.1礔

OFF

4.7礔ゥ 0.1礔

47礔

-12V

+12V

+3.3VAUX

*Contact factory for availabilty.

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