LTC1726 LINER [Linear Technology], LTC1726 Datasheet
LTC1726
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LTC1726 Summary of contents
Page 1
... The RST output is guaranteed the correct state for /V 1V CC25 CC5 V /V CC5 CC25 configured to monitor any one or two V of three, depending on system requirements. The low (16 A typical) supply current makes the LTC1726 ideal for power-conscious systems. , LTC and LT are registered trademarks of Linear Technology Corporation. 1.8V = 1.665V) TRIP R1 3.3V 66.5k 0 ...
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... CC25 CC3 CC25 CCA 1. 1.3V WT ORDER PART NUMBER LTC1726ES8-2.5 TOP VIEW LTC1726ES8 LTC1726IS8-2 LTC1726IS8-5 6 RST WDI 5 S8 PART MARKING S8 PACKAGE 8-LEAD PLASTIC SO 172625 726I25 = 125 C, = 150 C/W JA 17265 1726I5 = 2.5V unless CC25 CCA CC3 MIN ...
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... Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: All voltage values are with respect to GND. Note 3: The LTC1726E is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... TEMPERATURE ( C) Watchdog Time-Out Period vs Temperature 1500pF –60 –40 – TEMPERATURE ( Temperature (LTC1726-5) VCC3 1 CC5 1 3.3V CC3 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 80 100 –60 –40 – TEMPERATURE ( C) 1726 G05 Typical Transient Duration ...
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... Bypass this pin to ground CC25 CC5 with a 0 larger ceramic capacitor. V (Pin 2): 5V Sense Input (LTC1726-5). This pin also CC5 supplies power to the part when the voltage on this pin is greater than the voltage on V CC3 ground with a 0 larger ceramic capacitor. ...
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... LTC1726 CTIO S RT (Pin 8): Reset Time-Out Input. Place a capacitor between this pin and ground to adjust the reset time-out period. To determine the reset time-out period 3.30 • BLOCK DIAGRA WDI CC3 CC5 CC25 V 3 CCA GND ...
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... The watchdog and reset periods are both adjustable using external capacitors. All three V inputs must be above predetermined thresh- CC olds for reset not to be asserted. The LTC1726 will assert reset during power-up, power-down and brownout condi- tions on any one or all of the V inputs. CC ...
Page 8
... Figure 3 contains a simple circuit for 5V systems that can’t risk the RST output going high in the 3.1V to 4.15V range (possibly due to very slow rise time on the 5V supply). Diode D1 powers the LTC1726-5 while dropping 0.6V from the V pin to the V pin. This prevents the part’s ...
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... WDI WDI *TO PRESERVE THRESHOLD ACCURACY, SET PARALLEL COMBINATION OF R1 AND R2 66.5k Dual Supply Monitor (3.3V and 5V, Defeat V LTC1726 3. CC3 CC5 RST SYSTEM RESET CCA 4 5 GND WDI WDI LTC1726 C WT 1726 TA04 Input) CCA C WT 1726 TA05 9 ...
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... CC3 OSENSE CC5 RST CCA 4 5 22.1k GND WDI 1% 1726 TA08 REFER TO LTC1726-X OVERRIDE FUNCTIONS IN C THE APPLICATIONS INFORMATION SECTION SYSTEM RESET WDI 1726 TA06 SYSTEM RESET WDI 1726 TA07 SYSTEM RESET WDI ...
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... TYP 0.014 – 0.019 (0.355 – 0.483) TYP LTC1726 0.118 0.004** (3.00 0.102 0.034 0.004 (0.86 0.102) 0.006 0.004 (0.15 0.102) MSOP (MS8) 1098 ...
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... Micropower Triple Supply Monitor in 5-Pin SOT-23 Package LTC1728-2.5 Micropower Triple Supply Monitor in 5-Pin SOT-23 Package Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com 12V ( 5 11.2V TRIP ( 0.17V CC3 100nF LTC1726 R3* CC5 1.07M 100nF 10k 0. CCA R2 105k 4 0.1% ...