LTC1726IS8-2.5(RevB) 데이터 시트보기 (PDF) - Linear Technology

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LTC1726IS8-2.5
(Rev.:RevB)

Triple Supply Monitor and µP Supervisor with Adjustable Reset and Watchdog Timer

Linear Technology 

LTC1726

TYPICAL APPLICATIO

Triple Supply Monitor with Watchdog Timer and Manual Reset Button

MANUAL

RESET BUTTON

(NORMALLY OPEN)

12V (± 5%)

VTRIP = 11.2V

(± 0.17V)

5V 3.3V

100nF

R3*

R1

10k

1.07M

100nF

5%

0.1%

R2

105k

0.1%

VCC3

RT

LTC1726-5

VCC5

WT

VCCA

RST

GND

WDI

47nF

47nF

RESET

µP

I/O

1726 TA09

*OPTIONAL RESISTOR RECOMMENDED

TO EXTEND ESD TOLERANCE

VTRIP

=

VCCA

R2

(R1

+

R2)

( ) R1 = R2

VTRIP

VCCA

–

1

tRT = 155ms

tWT = 1s

RELATED PARTS

PART NUMBER

LTC690

LTC694-3.3

LTC699

LTC1232

LTC1326

LTC1326-2.5

LTC1536

LTC1727-5

LTC1727-2.5

LTC1728-5

LTC1728-2.5

LTC1728-1.8

LTC1985-1.8

LTC2900

LTC2901

LTC2902

LTC2903

LTC2908

LTC2910

DESCRIPTION

5V Supply Monitor, Watchdog Timer and Battery Backup

3.3V Supply Monitor, Watchdog Timer and Battery Backup

5V Supply Monitor and Watchdog Timer

5V Supply Monitor, Watchdog Timer and Push-Button Reset

Micropower Precision Triple Supply Monitor for 5V, 3.3V and ADJ

Micropower Precision Triple Supply Monitor for 2.5V, 3.3V and ADJ

Precision Triple Supply Monitor for PCI Applications

Micropower Triple Supply Monitor with Individual Outputs

Micropower Triple Supply Monitor with Individual Outputs

Micropower Triple Supply Monitor in 5-Pin SOT-23 Package

Micropower Triple Supply Monitor in 5-Pin SOT-23 Package

Micropower Triple Supply Monitor in 5-Pin SOT-23 Package

Micropower Triple Supply Monitor for 3V, 1.8V and ADJ

Quad Supply Monitor

Quad Supply Monitor with Watchdog Timer

Quad Supply Monitor with Selectable Supply Tolerance

Precision Quad Supply Monitor in SOT-23

Precision Six Supply Monitor

Octal Positive/Negative Voltage Monitor

COMMENTS

4.65V Threshold

2.9V Threshold

4.65V Threshold

4.37V/4.62V Threshold

4.725V, 3.118V, 1V Thresholds (±0.75%) 5V, 3.3V, ADJ

2.363V, 3.118V, 1V Thresholds (±0.75%) 2.5V, 3.3V, ADJ

Meets PCI tFAIL Timing Specifications

4.675V, 3.086V, 1V Thresholds (±1.5%) 5V, 3.3V, ADJ

2.338V, 3.086V, 1V Thresholds (±1.5%) 2.5V, 3.3V, ADJ

4.675V, 3.086V, 1V Thresholds (±1.5%) 5V, 3.3V, ADJ

2.338V, 3.086V, 1V Thresholds (±1.5%) 2.5V, 3.3V, ADJ

2.805V, 1.683V, 1V Thresholds (±1.5%) 3V, 1.8V, ADJ

Push-Pull RESET Output, SOT-23

Adjustable Reset Timer

Adjustable Watchdog and Reset Timers

Reset Disable for Margining Applications

Fixed and Adjustable Threshold Combinations

8-Lead ThinSOT and 3mm × 2mm DFN Packages

8 Low Voltage Adjustable Inputs (0.5V)

12 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

1726fb

LT/LWI 1106 REV B • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 2000

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