Datasheet > MIC2592B-5BTQ

MIC2592B-5BTQ

更新时间： 2024-09-18 22:25:23

品牌	Logo	应用领域
麦瑞 - MICREL		控制器 PC
页数	文件大小	规格书
31页	1918K
描述
Dual-Slot PCI Express Hot-Plug Controller

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MIC2592B-5BTQ 数据手册

MIC2592B

Dual-Slot PCI Express Hot-Plug Controller

General Description

Features

The MIC2592B is a dual-slot power controller supporting the

power distribution requirements for Peripheral Component

Interconnect Express (PCI Express) Hot-Plug compliant

systems. The MIC2592B provides complete power control

support for two PCI Express slots, including the 3.3VAUX

deﬁned by the PCI Express standards. Support for 12V, 3.3V,

and 3.3VAUX supplies is provided including programmable

constant-current inrush limiting, voltage supervision, pro-

grammable current limit, and circuit breaker functions. These

features provide comprehensive system protection and fault

isolation.TheMIC2592BalsoincorporatesanSMBusinterface

via which complete status of each slot is provided.

• Supports two independent PCI Express slots

• SMBus interface for slot power control and status

• Voltage-tolerant I/O for compatibility with SMBus 2.0

systems

• 12V, 3.3V, and 3.3VAUX supplies supported per PCI

Express Speciﬁcation v1.0a

- Intergrated power MOSFETs for 3.3VAUX rails

- Standby operation for Wake-on-LAN applications with

low backfeed on Main +12V and +3.3V rails.

• Programmable inrush current limiting

• Active current regulation controls inrush current

• Electronic circuit breaker for each supply to each slot

• High accuracies for both circuit breaker trip points and

nuisance trip prevention timers

All support documentation can be found on Micrel’s web site

at www.micrel.com.

• Dual level fault detection for quick fault response without

nuisance tripping

• Thermal isolation between circuitry for Slot A and Slot B

• Two General Purpose Input pins suitable for interface to

logic and switches.

Ordering Information

Part Number

12V and 3V

3.3VAUX

Package

Standard

Pb-Free

Fast-Trip Thresholds

Current Limit

MIC2592B – 2BTQ MIC2592B – 2YTQ

MIC2592B – 3BTQ* MIC2592B – 3YTQ*

MIC2592B – 5BTQ* MIC2592B – 5YTQ*

* Contact factory for availability

100mV

150mV

0.375A

48 Pin TQFP

Disabled

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-033105

March 2005

12 3 4 5 6 7...31

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