Datasheet > ADM1171-2AUJ

ADM1171-2AUJ

更新时间： 2024-11-05 20:58:55

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管
页数	文件大小	规格书
16页	176K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, TSOT-8, Power Management Circuit

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ADM1171-2AUJ 数据手册

2.7 V to 16.5 V Hot Swap Controller

with Current Sense Output

ADM1171

FEATURES

GENERAL DESCRIPTION

Controls supply rails from 2.7 V to 16.5 V

Allows protected board removal and insertion to a live

backplane

External sense resistor provides adjustable analog current

limit with circuit breaker

Peak fault current limited with fast response

Charge pumped gate drive for external N-FET switch

Current sense output

The ADM1171 is a hot swap controller that safely enables a

printed circuit board to be removed and inserted to a live

backplane. This is achieved using an external N-channel power

MOSFET with a current control loop that monitors the load

current through a sense resistor. An internal charge pump is

used to enhance the gate of the N-channel FET. When an

overcurrent condition is detected, the gate voltage of the FET is

reduced to limit the current flowing through the sense resistor.

During an overcurrent condition, the TIMER cap determines

the amount of time the FET remains at a current limiting mode

Soft start inrush current control

Automatic retry or latch-off during current fault

Undervoltage lockout

CLR

of operation until it is shut down. The ON (ON-

) pin is the

8-lead, TSOT package

enable input for the device and can be used to monitor the

input supply voltage. The ADM1171 operates with a supply

voltage ranging from 2.7 V to 16.5 V.

APPLICATIONS

Hot swap board insertion: line cards, raid systems

Industrial high-side switches/circuit breakers

Electronic circuit breakers

The ADM1171 features soft start to provide the user with a

capacitor programmable ramping reference to the internal

current sense comparator. This provides a linearly increasing

current limit at startup at a rate set by C_SS. This helps to reduce

and limit large inrush currents.

The ADM1171 also features a current sense output (CSOUT)

pin. The voltage on the CSOUT pin represents the voltage drop

across the sense resistor gained up by a factor of 20.

This device is available in two options: the ADM1171-1 with

automatic retry for overcurrent fault and the ADM1171-2 with

CLR

latch-off for an overcurrent fault. Toggling the ON (ON-

)

pin resets a latched fault. The ADM1171 is packaged in an

8-lead TSOT.

FUNCTIONAL BLOCK DIAGRAM

SENSE

LONG

= 5V

OUT

LOAD

SENSE

GATE

ADM1171-1

ON1

SHORT

ON2

CSOUT

TIMER

GND

TIMER

GND

LONG

GND

Figure 1.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADM1171-2AUJ相关器件

型号	品牌	获取价格	描述	数据表
ADM1171-2AUJZ-RL7	ADI	获取价格	2.7 V to 16.5 V Hot Swap Controller with Current Sense Output
ADM1172	ADI	获取价格	2.7 V to 16.5 V Hot Swap Controller with Power-Fail Comparator
ADM1172-1AUJZ-RL7	ADI	获取价格	2.7 V to 16.5 V Hot Swap Controller with Power-Fail Comparator
ADM1172-2AUJZ-RL7	ADI	获取价格	2.7 V to 16.5 V Hot Swap Controller with Power-Fail Comparator
ADM1173-1AUJ	ADI	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, TSOT-8, Power Management Circuit
ADM1175	ADI	获取价格	Hot Swap Controller and Digital Power Monitor with Convert Pin
ADM1175-1ARMZ-R7	ADI	获取价格	Hot Swap Controller and Digital Power Monitor with Convert Pin
ADM1175-2ARMZ-R7	ADI	获取价格	Hot Swap Controller and Digital Power Monitor with Convert Pin
ADM1175-3ARMZ-R7	ADI	获取价格	Hot Swap Controller and Digital Power Monitor with Convert Pin
ADM1175-4ARMZ-R7	ADI	获取价格	Hot Swap Controller and Digital Power Monitor with Convert Pin

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