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LTC694IN8-PBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC694IN8-PBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 18 page  LTC690/LTC691 LTC694/LTC695 4 690fe ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Battery Back-Up Switching Operating Voltage Range VCC VBATT 4.75 2.00 5.50 4.25 V V VOUT Output Voltage IOUT = 1mA l VCC – 0.05 VCC – 0.10 VCC – 0.005 VCC – 0.005 V V IOUT = 50mA VCC – 0.50 VCC – 0.250 V VOUT in Battery Back-Up Mode IOUT = 250μA, VCC < VBATT VBATT – 0.1 VBATT – 0.2 V Supply Current (Exclude IOUT)IOUT = 50mA l 0.6 0.6 1.5 2.5 mA mA Supply Current in Battery Back-Up Mode VCC = 0V, VBATT = 2.8V l 0.04 0.04 1 5 μA μA Battery Standby Current (+ = Discharge, – = Charge) 5.5 > VCC > VBATT + 0.2V l –0.1 –0.1 +0.02 +0.10 μA μA Battery Switchover Threshold, VCC – VBATT Power Up Power Down 70 50 mV mV Battery Switchover Hysteresis 20 mV BATT ON Output Voltage (Note 4) ISINK = 3.2mA 0.4 V BATT ON Output Short-Circuit Current (Note 4) BATT ON = VOUT Sink Current 35 m BATT ON = 0V Source Current 0.5 1 25 μA Reset and Watchdog Timer Reset Voltage Threshold l 4.5 4.65 4.75 V Reset Threshold Hysteresis 40 mV Reset Active Time (LTC690/91) (Note 5) OSC SEL HIGH, VCC = 5V l 40 35 50 50 60 70 ms ms Reset Active Time (LTC694/95) (Note 5) OSC SEL HIGH, VCC = 5V l 160 140 200 200 240 280 ms ms Watchdog Timeout Period, Internal Oscillator Long Period, VCC = 5V l 1.2 1 1.6 1.6 2.00 2.25 sec sec Short Period, VCC = 5V l 80 70 100 100 120 140 ms ms Watchdog Timeout Period, External Clock (Note 6) Long Period Short Period 4032 960 4097 1025 Clock Cycles Reset Active Time PSRR 1 ms/V Watchdog Timeout Period PSRR, Internal OSC 1 ms/V Minimum WDI Input Pulse Width VIL = 0.4V, VIH = 3.5V l 200 ns RESET Output Voltage at VCC = 1V ISINK = 10μA, VCC = 1V 4 200 mV RESET and LOW⎯LINE Output Voltage (Note 4) ISINK = 1.6mA, VCC = 4.25V ISOURCE = 1μA, VCC = 5V 3.5 0.4 V V RESET and WDO Output Voltage (Note 4) ISINK = 1.6mA, VCC = 5V ISOURCE = 1μA, VCC = 4.25V 3.5 0.4 V V The l denotes specifications which apply over the operating temperature range, otherwise specifications are at TA = 25°C. VCC = full operating range, VBATT = 2.8V, unless otherwise noted. |
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Similar Description - LTC694IN8-PBF |
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