LTC1326 LINER [Linear Technology], LTC1326 Datasheet
LTC1326
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LTC1326 Summary of contents
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... Tight 0.75% threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The 20 A typical supply current makes the LTC1326/ LTC1326-2.5 ideal for power-conscious systems. The RST output is guaranteed the correct state for V ...
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... Operating Voltage CC CC3 I V Supply Current VCC3 CC3 Operating Temperature Range LTC1326C/LTC1326C-2.5 ....................... LTC1326I/LTC1326I-2.5 ..................... – Storage Temperature Range ................ – 150 C + 0.3V) CC3 Lead Temperature (Soldering, 10 sec)................. 300 ORDER PART NUMBER V 1 CC3 V 2 LTC1326CMS8 CC5 3 ...
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... RST Output Voltage High (Note 3) OH SRST Output Voltage High (Note 3) RST Output Voltage High t Prop Delay RST to RST PHL High Input to Low Output t Prop Delay RST to RST PLH Low Input to High Output = 2.5V (for LTC1326-2.5 CCA CC3 CONDITIONS CC5 V = 2.5V CC25 ...
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... LTC1326/LTC1326-2.5 ELECTRICAL CHARACTERISTICS LTC1326 Only V = 3.3V 5V, V CC3 CC5 CCA SYMBOL PARAMETER V V Reset Override Voltage OVR CC5 The denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. ...
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... ABOVE CURVE 0.001 0.01 0.1 V RESET COMPARATOR OVERDRIVE (V) CCA 1326/2.5 G07 V Threshold Voltage CC25 vs Temperature (LTC1326-2.5) 2.375 2.370 2.365 2.360 2.355 2.350 – – 40 – TEMPERATURE ( C) 1326/2.5 G10 Reset Pulse Width vs Temperature 225 220 215 ...
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... V (Pin 1): 3.3V Sense Input and Power Supply Pin for CC3 the IC. Bypass to ground with 0.1 F ceramic capacitor. V (Pin 2) (LTC1326): 5V Sense Input. Used as gate CC5 drive for the RST output FET when the voltage on V less than the voltage unused, it can be tied to CC5 ...
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... RESET + GENERATOR – + REF LTC1326-2.5 SOFT RESET PBR TIMER RESET TO POWER DETECT – 200ms RESET GENERATOR + – + – + REF LTC1326/LTC1326-2.5 V CC3 SRST V CC3 V CC3 RST POWER DETECT/ GATE DRIVE V CC5 V CC3 5 RST 1326 BD V CC3 SRST ...
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... V their thresholds. On power-down, once any of the V its threshold, RST is held at a logic low. A logic low of 0.4V is guaranteed until V and V on the LTC1326 or V CC3 CC5 and V on the LTC1326-2.5 drop below 1V. CC25 8 PBR t < RST RST 1326/2.5 TD01 SRST ...
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... V inputs may be individually CC3 CC5 CCA disabled by the following override techniques which allow the LTC1326 or LTC1326-2 used as a dual or single supply monitor. LTC1326 Override Functions The V pin, if unused, can be tied to either V CCA This is an obvious solution since the trip points for V ...
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... 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 LTC1326 while dropping 0.6V from the V pin to the V pin. This prevents the part’s ...
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... V PBR CC3 SRST CC5 RST CCA SUPPLY GND RST REFER TO LTC1326 OVERRIDE FUNCTIONS IN THE APPLICATIONS INFORMATION SECTION. Dual Supply Monitor (3.3V Plus Adj) 3.3V LTC1326-2 PBR CC3 2 V SRST CC25 R1 3 ADJUSTABLE V RST CCA SUPPLY 4 R2 GND RST LTC1326/LTC1326-2 ...
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... V PBR V CC3 OSENSE 2 2. SRST CC5 RST CCA 4 22.1k GND RST ADJUSTABLE 1% RESET TRIP 1326/2.5 TA09 to Initiate Hard Reset LTC1326-2 3.3V V PBR CC3 2 7 2.5V V SRST CC25 RST RESET CCA 4 5 GND RST PBR 20ms RST 200ms 1326/2.5 TA11 4.7k RESET 1326/2 ...
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... TRIP 1% Q3 SUPPLY V TRIP R4 – 5V – 4.6V 392k – 3.3V – – 12V – 10.8V Reset Valid for V Down to 0V CC3 8 100k SYSTEM RESET 1326/2.5 TA13 LTC1326/LTC1326-2.5 8 PBR 7 SRST 6 RST SYSTEM RESET 5 RST + 0.55)(–1) R4 392k 237k 1M 1326/2.5 TA12 3 CC3 CC25 CCA 3.0 T ...
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... LTC1326/LTC1326-2.5 PACKAGE DESCRIPTIO 0.007 (0.18) * DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ...
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... TYP 0.014 – 0.019 (0.355 – 0.483) LTC1326/LTC1326-2 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1 ...
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... Supply Monitor and Watchdog Timer LTC1232 5V Supply Monitor, Watchdog Timer and Push-Button Reset LTC1536 Precision Triple Supply Monitor for PCI Applications Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com 3.3V 5V LTC1326 PBR CC3 SRST CC5 ...