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LT1111CN8-5 Datasheet(PDF) 3 Page - Linear Technology |
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LT1111CN8-5 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 16 page  3 LT1111 ELECTRICAL C C HARA TERISTICS V IN = 3V, Military or Commercial Version SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Line Regulation 5V ≤ VIN ≤ 30V q 0.02 0.075 %/V 2V ≤ VIN ≤ 5V 0.20 0.400 %/V AV Gain Block Gain RL = 100k (Note 3) q 1000 6000 V/V ILIM Current Limit 220 Ω from ILIM to VIN 400 mA Current Limit Temperature Coefficient q – 0.3 %/ °C Switch OFF Leakage Current Measured at SW1 Pin, VSW1 = 12V 1 10 µA Maximum Excursion Below GND ISW1≤ 10µA, Switch OFF – 400 – 350 mV LT1111M SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current Switch OFF q 300 500 µA fOSC Oscillator Frequency q 45 72 100 kHz DC Duty Cycle: Step-Up Mode Full Load q 40 50 62 % Step-Down Mode q 20 55 % tON Switch ON Time: Step-Up Mode ILIM Tied to VIN q 57 11 µs Step-Down Mode VOUT = 5V, VIN = 12V q 39 µs Reference Line Regulation 2V ≤ VIN ≤ 5V, 25°C ≤ TA ≤ 125°C 0.2 0.4 %/V 2.4V ≤ VIN ≤ 5V, TA = –55°C 0.8 %/V VSAT SW Saturation Voltage, Step-Up Mode 0 °C ≤ TA ≤ 125°C, ISW = 500mA, 0.5 0.65 V TA = – 55°C, ISW = 400mA SW Saturation Voltage, Step-Down Mode VIN = 12V, 0 °C ≤ TA ≤ 125°C 1.5 V ISW = 500mA TA = – 55°C 2.0 V VIN = 3V, – 55°C ≤ TA ≤ 125°C unless otherwise noted. LT1111C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current Switch OFF q 300 450 µA fOSC Oscillator Frequency q 54 72 95 kH DC Duty Cycle: Step-Up Mode Full Load q 43 50 59 % Step-Down Mode q 24 34 50 % tON Switch ON Time: Step-Up Mode ILIM Tied to VIN q 5.0 7 9.0 µs Step-Down Mode VOUT = 5V, VIN = 12V q 3.3 5 7.8 µs Reference Line Regulation 2V ≤ VIN ≤ 5V q 0.2 0.7 %/V VSAT SW Saturation Voltage, Step-Up Mode VIN = 3V, ISW = 650mA q 0.5 0.65 V SW Saturation Voltage, Step-Down Mode VIN = 12V, ISW = 650mA q 1.1 1.50 V VIN = 3V, 0°C ≤ TA ≤ 70°C unless otherwise noted. The q denotes specifications which apply over the full operating temperature range. Note 1: This specification guarantees that both the high and low trip points of the comparator fall within the 1.20V to 1.30V range. Note 2: The output voltage waveform will exhibit a sawtooth shape due to the comparator hysteresis. The output voltage on the fixed output versions will always be within the specified range. Note 3: 100k resistor connected between a 5V source and the A0 pin. |
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Similar Description - LT1111CN8-5 |
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