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ADM8693ARN-REEL

更新时间： 2024-11-15 13:05:27
品牌 Logo 应用领域
亚德诺 - ADI 微处理器监控
页数 文件大小 规格书
16页 209K
描述
IC 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16, MS-012AC, SOIC-16, Power Management Circuit

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ADM8693ARN-REEL 数据手册

 浏览型号ADM8693ARN-REEL的Datasheet PDF文件第2页浏览型号ADM8693ARN-REEL的Datasheet PDF文件第3页浏览型号ADM8693ARN-REEL的Datasheet PDF文件第4页浏览型号ADM8693ARN-REEL的Datasheet PDF文件第5页浏览型号ADM8693ARN-REEL的Datasheet PDF文件第6页浏览型号ADM8693ARN-REEL的Datasheet PDF文件第7页 
Microprocessor  
Supervisory Circuits  
a
ADM8690–ADM8695  
FEATURES  
FUNCTIO NAL BLO CK D IAGRAMS  
Upgrade for ADM690/ ADM695, MAX690–MAX695  
Specified Over Tem perature  
Low Pow er Consum ption (0.7 m W)  
Precision Voltage Monitor  
V
BATT  
V
OUT  
Reset Assertion Dow n to 1 V VCC  
Low Sw itch On-Resistance 0.7 ⍀ Norm al,  
7 ⍀ in Backup  
V
CC  
RESET  
GENERATOR  
1
RESET  
4.65V  
High Current Drive (100 m A)  
2
Watchdog Tim er—100 m s, 1.6 s, or Adjustable  
400 nA Standby Current  
Autom atic Battery Backup Pow er Sw itching  
Extrem ely Fast Gating of Chip Enable Signals (3 ns)  
Voltage Monitor for Pow er Fail  
Available in TSSOP Package  
ADM8690  
ADM8692  
ADM8694  
WATCHDOG  
TRANSITION DETECTOR  
(1.6s)  
WATCHDOG  
INPUT (WDI)  
POWER FAIL  
INPUT (PFI)  
POWER FAIL  
OUTPUT (PFO)  
1.3V  
APPLICATIONS  
Microprocessor System s  
Com puters  
1
2
VOLTAGE DETECTOR = 4.65V (ADM8690, ADM8694)  
4.40V (ADM8692)  
RESET PULSE WIDTH = 50ms (AD8690, ADM8692)  
200ms (ADM8694)  
Controllers  
Intelligent Instrum ents  
Autom otive System s  
BATT ON  
V
BATT  
GENERAL D ESCRIP TIO N  
V
OUT  
T he ADM8690–ADM8695 family of supervisory circuits offers  
complete single chip solutions for power supply monitoring and  
battery control functions in microprocessor systems. T hese  
functions include µP reset, backup battery switchover, watchdog  
timer, CMOS RAM write protection and power failure warning.  
T he complete family provides a variety of configurations to sat-  
isfy most microprocessor system requirements.  
ADM8691  
ADM8693  
ADM8695  
V
CC  
CE  
IN  
CE  
OUT  
LOW LINE  
RESET  
1
4.65V  
OSC IN  
RESET AND  
RESET  
T he ADM8690, ADM8692 and ADM8694 are available in  
8-pin DIP packages and provide:  
WATCHDOG  
GENERATOR  
TIMEBASE  
RESET  
OSC SEL  
1. Power-on reset output during power-up, power-down and  
brownout conditions. T he RESET output remains opera-  
tional with VCC as low as 1 V.  
WATCHDOG  
INPUT (WDI)  
WATCHDOG  
TIMER  
WATCHDOG  
TRANSITION DETECTOR  
WATCHDOG  
OUTPUT (WDO)  
POWER FAIL  
INPUT (PFI)  
POWER FAIL  
2. Battery backup switching for CMOS RAM, CMOS  
microprocessor or other low power logic.  
OUTPUT (PFO)  
1.3V  
3. A reset pulse if the optional watchdog timer has not been  
toggled within a specified time.  
1
VOLTAGE DETECTOR = 4.65V (ADM8691, ADM8695)  
4.40V (ADM8693)  
4. A 1.3 V threshold detector for power fail warning, low battery  
detection or to monitor a power supply other than +5 V.  
T he ADM8690–ADM8695 family is fabricated using an ad-  
vanced epitaxial CMOS process combining low power con-  
sumption (0.7 mW), extremely fast Chip Enable gating (3 ns)  
and high reliability. RESET assertion is guaranteed with VCC as  
low as 1 V. In addition, the power switching circuitry is de-  
signed for minimal voltage drop thereby permitting increased  
output current drive of up to 100 mA without the need of an  
external pass transistor.  
T he ADM8691, ADM8693 and ADM8695 are available in  
16-pin DIP and small outline packages (including T SSOP) and  
provide three additional functions:  
1. Write protection of CMOS RAM or EEPROM.  
2. Adjustable reset and watchdog timeout periods.  
3. Separate watchdog timeout, backup battery switchover, and  
low VCC status outputs.  
REV. 0  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 617/ 329-4700  
Fax: 617/ 326-8703  
World Wide Web Site: http:/ / w w w .analog.com  
© Analog Devices, Inc., 1997  
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