MAX5959 Maxim Integrated Products, MAX5959 Datasheet

MAX5959

Manufacturer Part Number

MAX5959

Description

(MAX5959 / MAX5960) Hot-Plug Controllers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX5959.pdf (25 pages)

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Company:

BOSTOCK HK LIMITED

Part Number:

MAX5959AECS+

Manufacturer:

Maxim Integrated

Quantity:

10 000

Company:

BOSTOCK HK LIMITED

Part Number:

MAX5959AECS+T

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Maxim Integrated

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Company:

BOSTOCK HK LIMITED

Part Number:

MAX5959LECS+

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Maxim Integrated

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The MAX5959/MAX5960 quad hot-plug controllers are

designed for PCI Express

devices provide hot-plug control for the main 12V, 3.3V,

and 3.3V auxiliary supplies of four PCIe slots. The

MAX5959/MAX5960s’ logic inputs/outputs allow interfac-

ing directly with the system hot-plug management con-

troller or through an SMBus™ with an external I/O

expander such as the MAX7313. An integrated

debounced attention switch and present-detect signals

simplify system design.

The MAX5959/MAX5960 drive eight external n-channel

MOSFETs to control the 12V and 3.3V main outputs. The

3.3V auxiliary outputs are controlled through 0.2Ω n-chan-

nel MOSFETs. Internal charge pumps provide the gate

drive for the 12V outputs while the gate drive of the 3.3V

output is driven by the 12V input supply clamped to 5.5V

above the respective 3.3V main supply rail. The 3.3V aux-

iliary outputs are completely independent from the main

outputs with their own charge pumps.

At power-up, the MAX5959/MAX5960 keep all the

MOSFETs off until the supplies rise above their respective

undervoltage lockout (UVLO) thresholds. Upon a turn-on

command, the MAX5959/MAX5960 enhance the external

and internal MOSFETs slowly with a constant gate current

to limit the power-supply inrush current.

The MAX5959/MAX5960 actively limit the current to pro-

tect all outputs at all times and shut down if an overcur-

rent condition persists longer than the programmable

overcurrent timeout. After an overcurrent or overtempera-

ture fault condition, the MAX5959L/MAX5960L latch off

while the MAX5959A/MAX5960A automatically restart

after a restart time delay. The MAX5959/MAX5960 are

offered in latch-off or autorestart versions (see the

Selector Guide ).

The MAX5959/MAX5960 are available in an 80-pin TQFP

package and operate over the -40°C to +85°C tempera-

ture range.

19-0856; Rev 0; 7/07

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAX5959AECS+

MAX5959LECS+

MAX5960AECS+

MAX5960LECS+

Servers

Desktop Mobile Server Platforms

Workstations

PART

________________________________________________________________ Maxim Integrated Products

Quad PCI Express, Hot-Plug Controllers

General Description

(PCIe) applications. These

LATCH OFF

Applications

√

AUTORESTART

♦ PCIe Compliant

♦ Hot Swap 12V, 3.3V, and 3.3V Auxiliary for 4

♦ Integrated Power MOSFETs for Auxiliary Supply

♦ Controls di/dt and dV/dt

♦ Active Current Limiting Protects Against

♦ Programmable Current-Limit Timeout

♦ PWRGD Signal Outputs with Programmable

♦ Latched FAULT Signal Output After Overcurrent

♦ Attention Switch Inputs/Outputs with 4ms

♦ Present-Detect Inputs

♦ Force-On Inputs Facilitate Testing/Debug

♦ Thermal Shutdown

♦ Allow Control Through SMBus with an I/O

+ Denotes a lead-free package.

Pin Configuration and Typical Application Circuit appear at

end of data sheet.

PCI Express is a registered trademark of PCI-SIG Corp.

SMBus is a trademark of Intel Corp.

MAX5959AECS+

MAX5960AECS+

√

MAX5959LECS+

MAX5960LECS+

PCIe Slots

Rails

Overcurrent/Short-Circuit Conditions

Power-On Reset (POR) (160ms Default)

or Overtemperature Fault

Debounce

Expander

PART

GUARANTEED AUX CURRENT (mA)

-40°C to +85°C

TEMP RANGE

Ordering Information

Selector Guide

375

550

PIN-

PACKAGE

80 TQFP

Features

CODE

C80-1

PKG

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