Microprocessor Supervisor Circuits InfoCard 12 Microprocessor Supervisory Circuits Single Voltage Monitor 4.65V Threshold LTC1235 with Push-Button Reset and Battery Backup Switching LTC690 Battery Backup Switching LTC691 Battery Backup Switching and RAM Write Protect LTC694 Battery Backup Switching and 200ms Reset Pulse Width LTC695 Battery Backup Switching, RAM Write Protect and 200ms Reset Pulse Width LTC699 200ms Reset Pulse Width 4.40V Threshold LTC692 Battery Backup Switching LTC693 Battery Backup Switching and RAM Write Protect 2.90V Threshold LTC694-3.3 Battery Backup Switching and 200ms, Reset Pulse Width LTC695-3.3 Battery Backup Switching, RAM Write Protect and 200ms Reset Pulse Width Multiple Voltage Monitor Triple Reset: 5V, 3.3V, and Adjustable Threshold LTC1326 0.75% Threshold Accuracy Push-Button Reset LTC1536 Meets PCI tFAIL Timing Specifications Push-Button Reset LTC1726-5 MSOP, Adj Watchdog Timer LTC1727-5 NEW! MSOP, 15A Supply Current, Monitor Output for Each Supply LT1728-5 SOT-23, 15A Supply Current, Glitch Immunity NEW IN SOT-23! Triple Reset: 3.3V, 2.5V, and Adjustable Threshold LTC1326-2.5 0.75% Threshold Accuracy Push-Button Reset LTC1726-2.5 MSOP, Adj Watchdog Timer NEW! LTC1727-2.5 MSOP, 15A Supply Current, Monitor Output for Each Supply LTC1728-2.5 SOT-23, 15A Supply Current, Glitch Immunity NEW IN SOT-23! Selectable Threshold LTC1232 4.62V or 4.37V Threshold with Push-Button Reset Rev E 0100 Linear Technology Corporation * 1630 McCarthy Blvd. * Milpitas, CA 95035-7417 * (408) 432-1900 * www.linear-tech.com * Literature Only: 1-800-4-LINEAR Microprocessor Supervisor Circuits LTC1235 4.65 200 1.0 600 16 16 LTC690 4.65 50 1.0 600 8 8 LTC691 4.65 50 1.0 600 16 16 LTC692 4.40 200 1.0 600 8 8 LTC693 4.40 200 1.0 600 16 16 LTC694/ LTC694-3.3 4.65 2.90 200 1.0 600 8 8 LTC695/ LTC695-3.3 4.65 2.90 200 1.0 600 16 16 LTC699 4.65 200 1.0 600 8 8 LTC1232 4.62 or 4.37 610 1.0 500 8 8 LTC1326/ LTC1326-2.5 4.725 3.118 2.985 2.363 Adj Adj 200 200 1.0 1.0 40 40 8 8 8 8 LTC1536 4.725 2.985 Adj 200 1.0 40 8 8 4.750 3.135 3.135 2.375 Adj Adj Adj Adj 1.0 1.0 20 20 8 8 8 8 LTC1727-5 LTC1727-2.5 4.750 3.135 3.135 2.375 Adj Adj 200 200 1.0 1.0 15 15 8 8 8 8 LTC1728-5 LTC1728-2.5 4.750 3.135 3.135 2.375 Adj Adj 200 200 1.0 1.0 15 15 LTC1726-5 LTC1726-2.5 Adj Adj 3 SO T-2 OP MS Pu sh -Bu tto nR ese Ba t tte UL ry B Re a cog ckup niz Co ed Switc ndi hin tio g nal Ba t ter RA yB MW ack rite up Pro tec Wa t tch dog Tim er Po we rF ail Wa rni Po ng we rU p/D ow nR Re ese set t Thr esh o l d( Se V) con dR ese t Th Thi res rd hol Re d set Thr Re e sho set ld Pu lse Wi dth Gu ara (m nte s) ed VC CR Po ese we t Le rS upp vel ly C (V) urr PD ent IP (A ) SO InfoCard 12 5 5 Notes: LTC1536: tFAIL timing meets PCI specifications Bold indicates new product Typical Applications A 3.3V, 5V and 1.8V Monitor A 3.3V, 2.5V and 1.8V Monitor 1.8V (VTRIP = 1.665V) 1.8V (VTRIP = 1.665V) 3.3V 0.1F 5V 0.1F 2 CRT 47nF 1 3 VCC5 VCC3 VCCA 8 RST RT CWT 47nF 6 R1 66.5k 1% 3.3V R2 100k 1% 2.5V 0.1F P WDI CWT 47nF tRT = 155ms tWT= 1s R2 100k 1% 3 RT RST 6 RESET P LTC1726-2.5 7 I/O 5 WT WDI I/O GND GND 4 1 VCC25 VCC3 VCCA RESET 5 WT 2 CRT 47nF 8 LTC1726-5 7 R1 66.5k 1% 0.1F 1726 TA01 tRT = 155ms tWT= 1s 4 1726 TA02 Linear Technology Corporation * 1630 McCarthy Blvd. * Milpitas, CA 95035-7417 * (408) 432-1900 * www.linear-tech.com * Literature Only: 1-800-4-LINEAR ic12e (c)1992 LT/TP 0100 4K