16

LTC2903-1

29031f a

© LINEAR TECHNOLOGY CORPORATION 2003

LT/TP 1004 1K • PRINTED IN THE USA

PART NUMBER

DESCRIPTION

COMMENTS

LTC690

5V Supply Monitor, Watchdog Timer and Battery Backup

4.65 Threshold

LTC694-3.3

3.3V Supply Monitor, Watchdog Timer and Battery Backup

2.9V Threshold

LTC699

5V Supply Monitor and Watchdog Timer

4.65 Threshold

LTC1232

5V Supply Monitor, Watchdog Timer and Pushbutton Reset

4.37V/4.62V Threshold

LTC1326

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

4.725V, 3.118V, 1V Thresholds (±0.75%)

LTC1326-2.5

Micropower Precision Triple Supply Monitor for 2.5V, 3.3V and ADJ 2.363V, 3.118V, 1V Thresholds (±0.75%)

LTC1536

Precision Triple Supply Monitor for PCI Applications

LTC1726-2.5

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

Adjustable RESET and Watchdog Time Outs

LTC1726-5

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

Adjustable RESET and Watchdog Time Outs

LTC1727-2.5/LTC1727-5

Micropower Triple Supply Monitors with Open-Drain Reset

Individual Monitor Outputs in MSOP

LTC1728-1.8/LTC1728-3.3 Micropower Triple Supply Monitors with Open-Drain Reset

5-Lead SOT-23 Package

LTC1728-2.5/LTC1728-5

Micropower Triple Supply Monitors with Open-Drain Reset

5-Lead SOT-23 Package

LTC1985-1.8

Micropower Triple Supply Monitor with Push-Pull Reset Output

5-Lead SOT-23 Package

LTC2900

Quad Voltage Monitor in MSOP

16 User Selectable Combinations,

±1.5% Threshold Accuracy

LTC2901

Quad Voltage Monitor with Watchdog

16 User Selectable Combinations, Adjustable Timers

LTC2902

Quad Voltage Monitor with RST Disable

16 User Selectable Combinations, Adjustable Tolerance

LTC2904/LTC2905/

Precision Dual Supply Monitors

Pin Selectable Thresholds

LTC2906/LTC2907

LTC2908

Precision Six Supply Monitor

8-Lead SOT-23 and DFN Packages

LTC2920-1/LTC2920-2

Single/Dual Power Supply Margining Controller

<0.4% Margin Voltage Precision

LTC2921/LTC2922

Power Supply Trackers with Input Monitors

3 (LTC2921) and 5 (LTC2922) Remote Sense Switches

LTC2923

Power Supply Tracking Controller

Tracks Up and Down, Supply Sequencing

RELATED PARTS

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

TYPICAL APPLICATIO

Quad Supply Monitor with Manual Reset Button

GND

V2

V4

V3

3.3V

2.5V

LTC2903-A1

RST

V1

SYSTEM RESET

1.8V

3.3V

R2

100k

*OPTIONAL RESISTOR RECOMMENDED

TO EXTEND ESD TOLERANCE

R1

2050k

R3

10k

2903 TA04

C1

0.1µF

C2

0.1µF

10k

MANUAL

RESET BUTTON

(NORMALLY OPEN)

12V