Datasheet > LTC4245

LTC4245

更新时间： 2024-11-22 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
36页	431K
描述
具 I2C 兼容型监视功能的多电源热插拔控制器

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中文翻译

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LTC4245 数据手册

LTC4245

Multiple Supply Hot Swap

Controller with I C

Compatible Monitoring

DESCRIPTIO

FEATURES

Allows Safe Insertion into Live CompactPCI^TMor

The LTC^®4245 Hot Swap^TMcontroller allows a board to

be safely inserted and removed from a live backplane in

multiple supply systems such as CompactPCI and PCI

Express. Using four external N-channel pass transistors,

the board supply voltages can be ramped up at an adjust-

ablerateandinanydesiredsequence. AnI Cinterfaceand

onboard ADC allow monitoring of board current, voltage

and fault status for each supply.

■

PCI Express^TMBackplane

■

8-Bit ADC Monitors Current and Voltage

I C^TM/SMBus Interface

■

dI/dt Controlled Soft Start

Simultaneous or Sequenced Turn-On

■

2ꢀV Absolute Maximum ꢁating for 12V Supplies

■

No External Gate Capacitor ꢁequired

■

Dual-Level Circuit Breaker and Current Limit

The device features adjustable dI/dt controlled soft start

and foldback limited inrush current. A dual-level timed

circuit breaker and fast current limit protect each supply

againstovercurrentfaults.Apowergoodinputwithtimeout

allows a downstream supply monitor to disconnect the

board supplies. The device can be conﬁgured to function

withouta–12Vsupplyorwithanextra3.3Vsupplyinstead

of a 5V supply.

■

Bus Precharge Output

Power Good Input with Timeout

■

Optional Latchoff or Autoretry After Faults

■

Alerts Host After Faults

■

Integrated LOCAL_PCI_ꢁST# Logic

■

36-Pin SSOP and 38-Pin (5mm × 7mm) QFN

Packages

APPLICATIO S

The controller has additional features to interrupt the host

when a fault has occurred, notify when output power is

good, detect insertion of a load card and power-up in

either the on or off state.

■

Live Board Insertion

■

CompactPCI, CompactPCI Express, CompactTCA,

PCI Express Systems

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

CompactPCI Application

BACKPLANE CARD

CONNECTOR CONNECTOR

Sequenced Turn-On Waveform

OUT

BD_SEL#

10V/DIV

12V

OUT

12V 12V

12V

GATE

12V

SENSE

GATE

OUT

SENSE

OUT

OUTPUT

VOLTAGE

5V/DIV

BD_SEL#

OUT

SUPPLY

MONITOR

RESET

PGI

HEALTHY#

SDA

EEOUT

LTC4245

BOARD

RESET

LOCAL_PCI_RESET#

PRECHARGE

SCL

ALERT#

PCI_RST#

TO BUS

LOCAL_PCI_RST#

5V/DIV

GND

OUT

EEIN

TIME (50ms/DIV)

EESENSE EEGATE EEOUT

SENSE GATE

–12V

OUT

4245 TA01b

3.3V

OUT

4245fa

12 3 4 5 6 7...36

中文翻译

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与LTC4245相关器件

型号	品牌	获取价格	描述	数据表
LTC4245CG	Linear	获取价格	Multiple Supply Hot Swap Controller with I2C Compatible Monitoring
LTC4245CG#TR	Linear	获取价格	LTC4245 - Multiple Supply Hot Swap Controller with I<sup>2</sup>C Compatible M
LTC4245CUHF	Linear	获取价格	Multiple Supply Hot Swap Controller with I2C Compatible Monitoring
LTC4245CUHF#PBF	Linear	获取价格	LTC4245 - Multiple Supply Hot Swap Controller with I<sup>2</sup>C Compatible M
LTC4245CUHF#TR	Linear	获取价格	LTC4245 - Multiple Supply Hot Swap Controller with I<sup>2</sup>C Compatible M
LTC4245CUHF#TRPBF	Linear	获取价格	暂无描述
LTC4245IG	Linear	获取价格	Multiple Supply Hot Swap Controller with I2C Compatible Monitoring
LTC4245IG#TR	Linear	获取价格	LTC4245 - Multiple Supply Hot Swap Controller with I<sup>2</sup>C Compatible M
LTC4245IUHF	Linear	获取价格	Multiple Supply Hot Swap Controller with I2C Compatible Monitoring
LTC4245IUHF#PBF	Linear	获取价格	暂无描述

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