16
LTC2900
2900f
LT/TP 0403 2K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2002
TYPICAL APPLICATIO
U
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
Monitor Eight Supplies Using Supervisory Cascade
12V (ADJ), 5V, 3.3V, 3V, 2.5V, 1.8V, 1V (ADJ), –5V (–ADJ)
V3
V1
CRT
RST
PBR
V2
V4
V
REF
V
PG
GND
5
R2A
59k
1%
100k
20k
R6A
100k
1%
R4A
100k
1%
R3A
2150k 1%
R5A
86.6k 1%
R3B
464k 1%
1V
12V
5V 3.3V
1.8V
2.5V
–5V
3V
C
RTA
R1A
40.2k
1%
4
6
7
8
9
10
3
2
1
LTC2900-2
V3
V1
CRT
RST
PBR
V2
V4
V
REF
V
PG
GND
5
2900 TA06
4
6
7
8
9
10
3
2
1
LTC2900-2
C
RTB
R1B
22.1k
1%
R4B
121k
1%
MASTER
RESET
R2B
78.7k
1%
PART NUMBER DESCRIPTION COMMENTS
LTC690 5V Supply Monitor, Watchdog Timer and Battery Backup 4.65V Threshold
LTC694-3.3 3.3V Supply Monitor, Watchdog Timer and Battery Backup 2.9V Threshold
LTC699 5V Supply Monitor and Watchdog Timer 4.65V Threshold
LTC1232 5V Supply Monitor, Watchdog Timer and Push-Button 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
LTC2901 Programmable Quad Supply Monitor Adjustable Reset and Watchdog Timers, 16-Lead
Narrow SSOP Package
LTC2902 Programmable Quad Supply Monitor Adjustable Reset Timer, Supply Tolerance and
Margining Functions, 16-Lead Narrow SSOP Package
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