Datasheet > ADM802MARNZ

ADM802MARNZ

更新时间： 2024-11-16 03:04:11

品牌	Logo	应用领域
亚德诺 - ADI		电池光电二极管
页数	文件大小	规格书
8页	329K
描述
Microprocessor Supervisor with Backup Battery Switchover, Watchdog Feature, Power Fail Warning, 4.4V/4.65V Threshold Voltage with ±2% Accuracy, Active Low Reset and 250mA Output Current

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ADM802MARNZ 数据手册

Microprocessor

Supervisory Circuits

ADM690A/ADM692A/ADM802L/M/ADM805L/M

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Precision Supply Voltage Monitor

4.65 V ADM690A/ADM802L/ADM805L

4.40 V ADM692A/ADM802M/ADM805M

Reset Assertion Down to 1 V V_CC

Reset Timeout—200 ms

BATT

BATTERY

SWITCHOVER

OUT

Watchdog Timer—1.6 s

100 ␮A Quiescent Supply Current

Automatic Battery Backup Power Switching

Voltage Monitor for Power Fail

؎2% Power Fail Accuracy on ADM802L/M

Space-Saving MicroSOIC Package (ADM690A)

RESET

GENERATOR

RESET

(RESET)

4.65V*

ADM690A

WATCHDOG

INPUT (WDI)

ADM692A

ADM802L

ADM802M

ADM805L

ADM805M

TRANSITION DETECTOR

(1.6s)

APPLICATIONS

Microprocessor Systems

Computers

POWER FAIL

INPUT (PFI)

POWER FAIL

OUTPUT (PFO)

Controllers

1.25V

Intelligent Instruments

*4.4V FOR ADM692A/ADM802M/ADM805M

( ) = ADM805L/M ONLY

GENERAL DESCRIPTION

The ADM690A/ADM692A/ADM802L/M/ADM805L/M

family of supervisory circuits offers complete single chip

solutions for power supply monitoring and battery control

functions in microprocessor systems. These functions include

µP reset, backup battery switchover, watchdog timer, and power

failure warning.

The ADM805L/M provides an active high reset output, RESET

instead of RESET.

The family of products is fabricated using an advanced epitaxial

CMOS process combining low power consumption and high

reliability. RESET assertion is guaranteed with V_CCas low as 1 V.

They provide a pin-compatible upgrade for the MAX690A/

MAX692A/MAX802L/MAX802M/MAX805L

The ADM690A/ADM692A/ADM802L/M/ADM805L/M are

available in 8-pin packages and provide:

All parts are available in 8-pin DIP and SOIC packages. The

ADM690A is also available in a new space-saving microSOIC

package.

1. Power-on reset output during power-up, power-down and

brownout conditions. The RESET output remains opera-

tional with V_CCas low as 1 V.

2. Battery backup switching for CMOS RAM, CMOS

microprocessor or other low power devices.

3. A reset pulse if the optional watchdog timer has not been

toggled within 1.6 seconds.

4. A 1.25 V threshold detector for power fail warning, low battery

detection, or to monitor a power supply other than +5 V.

On the ADM690A/ADM802L/ADM805L the reset voltage

threshold is 4.65 V. On the ADM692A/ADM802M/

ADM805M, the reset voltage threshold is 4.40 V.

The ADM802L/ADM802M guarantee power fail accuracies to

±2%.

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/329-4700

Fax: 617/326-8703

World Wide Web Site: http://www.analog.com

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ADM802MARNZ 替代型号

型号	品牌	替代类型	描述	数据表
ADM802MARN	ADI	完全替代	Microprocessor Supervisory Circuits
ADM802LARNZ	ADI	类似代替	Microprocessor Supervisor with Backup Battery
ADM802LARN	ADI	类似代替	Microprocessor Supervisory Circuits

与ADM802MARNZ相关器件

型号	品牌	获取价格	描述	数据表
ADM803	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803_08	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803_15	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803LAKS-REEL	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SC-70, 3 PIN
ADM803LAKS-REEL	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803LAKS-REEL7	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803LAKS-REEL-7	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803LAKSZ-REEL	ADI	获取价格	Microprocessor Supervisory Circuit in 3-Lead SC70, Active-Low Open-Drain Output
ADM803LAKSZ-REEL2	ADI	获取价格	Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803LAKSZ-REEL7	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, ROHS COMPLIANT, SC-70, 3 PIN

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