LTC1445 Linear Technology, LTC1445 Datasheet
LTC1445
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LTC1445 Summary of contents
Page 1
... LTC1443 or 1.221V 1% for LTC1444/LTC1445), programmable hysteresis (LTC1444/LTC1445) and TTL/CMOS output (LTC1443/ LTC1445) that sinks and sources current (open-drain output for LTC1444). The reference output can drive a bypass capacitor 0.01 F without oscillation. The comparators operate from a single 2V to 11V supply or a dual ...
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... N PACKAGE 16-LEAD PDIP T JMAX T JMAX The denotes the specifications which apply over the full operating + – 5V GND = 0V, unless otherwise noted. A CONDITIONS + – 80mV HYST = REF (LTC1444/LTC1445 2. – 2. LTC1444/LTC1445 – – 1.3V 11V 100Hz to 100kHz LTC1444, LTC1445 , HYST ...
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... –1.3V 11V 100Hz to 100kHz LTC1444/LTC1445 Overdrive = 10mV 100pF OUT Overdrive = 100mV 100pF OUT I = – 10mA, LTC1443/LTC1445 0.8mA; LTC1443 0.8mA; LTC1444/LTC1445 O No Load, LTC1443 C Temp Range I Temp Range No Load, LTC1444/ C Temp Range LTC1445 I Temp Range V 1mV REF V 2 ...
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... V – V (mV) REF HYST LTC1443/44/45 • TPC01 LTC1444/LTC1445 Reference Voltage vs Temperature 1.224 + 1.220 1.216 1.212 1.208 –60 –40 – 100 120 TEMPERATURE ( C) LTC1443/44/45 • TPC04 LTC1443 Reference Output Voltage vs Output Load Current 1 ...
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... RESPONSE TIME ( s) LTC1443/44/45 • TPC11 LTC1443/44/45 • TPC13 C = 55pF OUT C = 5pF OUT 1k 10k 100k LTC1329 • TPC15 LTC1443/LTC1444/LTC1445 Comparator Short-Circuit Sink Current vs Supply Voltage 200 180 160 140 OUT CONNECTED TO V 120 100 ...
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... Noninverting Input of Comparator D. Input common mode range from V typically 10pA – 1.3V. Input current GND (Pin 14): LTC1443 Ground. Connect to V supply operation. HYST (Pin 14): LTC1444/LTC1445 Hysteresis Input. Con- – 1.3V. Input current nect to REF if not used. Input voltage range is from – 50mV. REF – ...
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... LTC1443 and 1.221V for the LTC1444/LTC1445). Features include programmable hysteresis (LTC1444/ LTC1445), wide supply voltage range (2V to 11V) and the ability of the reference to drive 0.01 F capacitor without oscillation. The comparator CMOS outputs ...
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... V Resistors R1 and R2 set 10mV of hysteresis, while R3 damps the reference response. Note that the comparator output doesn’t trip. Hysteresis Hysteresis can be added to the LTC1444/LTC1445 by connecting a resistor (R1) between the REF and HYST pins, and a second resistor (R2) from HYST ...
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... Choose the values for R3 and R4 to set the hysteresis 2.4M R3 Choose the values for R1 and R2 to set the trip point Using the same equations, R6 and R7 are 1.82M and 1.21M respectfully to set the trip level at 3V for V2. LTC1443/LTC1444/LTC1445 OUT B OUT 15k 1.221V/1 A 1.21M ...
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... LTC1443/LTC1444/LTC1445 PACKAGE DESCRIPTIO 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm Dimensions in inches (millimeters) unless otherwise noted. ...
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... DWG # 05-08-1610 0.228 – 0.244 (5.791 – 6.197 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) TYP LTC1443/LTC1444/LTC1445 0.386 – 0.394* (9.804 – 10.008 0.150 – 0.157** (3.810 – 3.988 ...
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... LTC1443/LTC1444/LTC1445 U TYPICAL APPLICATIO R1 1. 1/4 LTC1444 R2 4 – 82. 51k 5% 6 – 1 CELL LITHIUM ION 1/4 LTC1444 R3 7 HYST BATTERY 51k 5% 8 REF R4 R6 2.4M 430 LTC1444 5% 5% REF C1 – C2, C3: AUX TPSD107M010R0100 OR SANYO OS-CON 16SA100M RELATED PARTS ...