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 Meets PCI t
FAIL
Timing Specifications
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
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
TYPICAL APPLICATIO
U
Quad Supply Monitor with Manual Reset Button
GND
V2
V4
V3
3.3V
2.5V
LTC2903-A1
RSTV1
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
R
ESD
*
10k
MANUAL
RESET BUTTON
(NORMALLY OPEN)
12V
(V
TRIP
= 10.75V)
