ADM1184

更新时间： 2024-09-17 04:31:19

品牌	Logo	应用领域
亚德诺 - ADI		监控
页数	文件大小	规格书
12页	270K
描述
0.8% Accurate Quad Voltage Monitor

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数据手册

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ADM1184 数据手册

0.8% Accurate Quad Voltage Monitor

ADM1184

FEATURES

FUNCTIONAL BLOCK DIAGRAM

VCC

Powered from 2.7 V to 5.5 V on the VCC pin

Monitors 4 supplies via 0.8% accurate comparators

4 inputs can be programmed to monitor different voltage

levels with external resistor dividers

POWER AND

REF = 0.6V

REFERENCE

ADM1184

GENERATOR

OUT1

3 open-drain enable outputs (OUT1, OUT2, and OUT3)

Open-drain power-good output (PWRGD)

Internal 190 ms delay associated with assertion of PWRGD

10-lead MSOP

VIN1

REF = 0.6V

OUT2

VIN2

REF = 0.6V

APPLICATIONS

INTERNAL

OUT3

LOGIC

VIN3

Monitor and alarm functions

Telecommunications

Microprocessor systems

PC/servers

REF = 0.6V

PWRGD

VIN4

REF = 0.6V

GND

Figure 1.

GENERAL DESCRIPTION

The ADM1184 is an integrated, 4-channel voltage-monitoring

device. A 2.7 V to 5.5 V power supply is required on the VCC pin

to power the device.

OUT1 to OUT3 are dependent on their associated VINx input

(that is, VIN1, VIN2, or VIN3). If a supply monitored by VINx

drops below its programmed threshold, the associated OUTx pin

and PWRGD are disabled.

Four precision comparators monitor four voltage rails.

Each comparator has a 0.6 V reference with a worst-case

accuracy of 0.8%. Resistor networks that are external to the

VIN1, VIN2, VIN3, and VIN4 pins set the trip points for

the monitored supply rails.

PWRGD is a common power-good output indicating the status

of all monitored supplies. There is an internal 190 ms (typical)

delay associated with the assertion of the PWRGD output. If

VIN1, VIN2, VIN3, or VIN4 drops below its programmed

threshold, PWRGD is deasserted immediately.

The ADM1184 has four open-drain outputs. OUT1 to OUT3

can be used to enable power supplies, and PWRGD is a

common power-good output.

The ADM1184 is available in a 10-lead mini small outline

package (MSOP).

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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