Datasheet > LTC4241

LTC4241

更新时间： 2023-12-20 18:45:33

品牌	Logo	应用领域
亚德诺 - ADI		PC 控制器
页数	文件大小	规格书
16页	279K
描述
PCI 总线和 3.3V 辅助热插拔控制器

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LTC4241 数据手册

LTC4241

PCI-Bus with 3.3V Auxiliary

Hot Swap Controller

FEATURES

DESCRIPTIO

The LTC^®4241 is a Hot Swap controller that allows a board

to be safely inserted and removed from a live PCI-bus slot.

It has a primary controller that controls the four PCI

suppliesandanindependentauxiliarycontrollertocontrol

the 3.3V auxiliary supply. External N-channel transistors

areusedtocontrolthe3.3V,5Vand3.3Vauxiliarysupplies

whileon-chipswitchescontrolthe–12Vand12Vsupplies.

The3.3V, 5Vand3.3Vauxiliarysuppliescanberampedup

at an adjustable rate. Electronic circuit breakers protect all

five supplies against overcurrent faults. The foldback

current limit feature reduces current spikes and power

dissipation when shorts occur. The PWRGD output of the

primary controller indicates when all four PCI supplies are

withintolerance.TheFAULToutputindicatesanovercurrent

condition for any of the five supplies.

■

Allows Safe Board Insertion and Removal from a

Live PCI Slot

■

Controls 3.3V, 5V, –12V, 12V and 3.3V Auxiliary

Supplies

Independent 3.3V Auxiliary Supply Hot Swap^TM

■

Controller

■

Adjustable Foldback Current Limit with Circuit

Breaker

■

Adjustable Supply Voltage Power-Up Rate

■

High Side Drive for External N-Channel FETs

■

–12V and 12V On-Chip Switches

Fault and Power Good Outputs

■

APPLICATIO S

■

PCI-Based Servers

Computer Systems

■

The LTC4241 is available in the 20-pin narrow SSOP

package.

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

Hot Swap is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

GND

0.007Ω

IRF7413

10Ω

0.005Ω

IRF7413

3.3V

7.6A

10Ω

0.07Ω

Si2306DS

3.3V

AUX

500mA

SYSTEM

POWER

SUPPLY

10nF

100Ω

10Ω

0.047µF

AUXIN AUXSENSE AUXGATE 3V 3V

GATE 3V

SENSE

OUT

SENSE

OUT

GND

12V

500mA

12V

EEIN

OUT

–12V

100mA

AUXON

LTC4241

EEOUT

R8 10k

R9 10k

BACKPLANE

PCI

FAULT

TIMER

CONNECTOR

POWER

0.1µF

SYSTEM

CONTROLLER

PWRGD

LOGIC

RESET

4241 F01

Figure 1. Hot Swappable PCI and 3.3V Auxiliary Supplies

sn4241 4241f

12 3 4 5 6 7...16

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LTC4241IGN	Linear	PCI-Bus with 3.3V Auxiliary Hot Swap Controller	获取价格
LTC4241IGN#TRPBF	Linear	LTC4241 - PCI-Bus with 3.3V Auxiliary Hot Swap Controller; Package: SSOP; Pins: 20; Temper	获取价格