LTC2931
16
2931fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0508 REV B • PRINTED IN USA
TYPICAL APPLICATION
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
LTC1232 5V Supply Monitor, Watchdog Timer and Pushbutton Reset 4.37V/4.62V Threshold
LTC1326 Micropower Triple Supply Monitor for 5V/2.5V, 3.3V and ADJ 4.725V, 3.118V, 1V Threshold (±0.75%) and ADJ
LTC1726 Micropower Triple Supply Monitor for 2.5V/5V, 3.3V and ADJ Adjustable Reset and Watchdog Timeouts
LTC1727 Micropower Triple Supply Monitor with Open-Drain Reset Individual Monitor Outputs in MSOP
LTC1728 Micropower Triple Supply Monitor with Open-Drain Reset 5-Lead SOT-23 Package
LTC1985 Micropower Triple Supply Monitor with Push-Pull Reset Output 5-Lead SOT-23 Package
LTC2900 Programmable Quad Supply Monitor Adjustable Reset, 10-Lead MSOP and DFN Packages
LTC2901 Programmable Quad Supply Monitor Adjustable Reset and Watchdog Timer
LTC2902 Programmable Quad Supply Monitor Adjustable Reset and Tolerance
LTC2903 Precision Quad Supply Monitor 6-Lead SOT-23 Package
LTC2904-LTC2907 Three-State Programmable Precision Dual Supply Monitor 8-Lead SOT-23 and DFN Packages
LTC2908 Precision Six Supply Monitor (Four Fixed & Two Adjustable) 8-Lead TSOT-23 and DFN Packages
LTC2909 Precision Triple/Dual Input UV, OV and Negative Voltage Monitor Shunt Regulated V
CC
Pin, Adjustable Threshold and Reset,
8-Lead SOT-23 and DFN Packages
LTC2910 Precision Octal Positive/Negative Voltage Supply Monitor 16-Lead SSOP and 5mm × 3mm DFN Packages, H-Grade
Temperature Range
LTC2912-LTC2914 Single/Dual/Quad UV and OV Voltage Monitors Separate V
CC
Pin, Adjustable Reset Timer, H-Grade Temperature
Range
LTC2915-LTC2918 Single Supply Monitor with 27 Pin-Selectable Thresholds Manual Reset, Watchdog, TSOT-8/MSOP-10 and 3mm × 2mm
DFN Packages, H-Grade Temperature Range
LTC2928 Quad Power Supply Sequencer and Supervisor Easily Confi gure Power Management without Software, 36-Lead
5mm × 7mm QFN and SSOP Packages
RELATED PARTS
COMP1
COMP2
COMP3
COMP4
COMP5
COMP6
10
VREF
VPG
CRT
CWT
LTC2931
2931 TA02
182k
1%
R1
59k
1%
5V
0.1μF
RESET
POWER GOOD
3.3V
2.5V
1.8V
1.5V
R2
40.2k
1%
100k
1%
10k
t
WD
= 94ms
t
RST
= 9.4ms
RST
WDO
GND
V1
V2
V3
V4
V5
V6
4.7nF
4.7nF
WDI
SYSTEM
LOGIC
System Reset Generated by Watchdog Timing or Supply Voltage Failure
