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LTC3701 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3701 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  3 LTC3701 3701fa The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN = 4.2V unless otherwise noted. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Oscillator and Phase-Locked Loop Oscillator Frequency VPLLLPF = 1.2V or Floating 500 550 600 kHz VPLLLPF = 0V 230 280 320 kHz VPLLLPF ≥ 2.4V 690 775 890 kHz Phase Detector Output Current Sinking fEXTCLK/MODE < fOSC –5 µA Sourcing fEXTCLK/MODE > fOSC 5 µA PGOOD Output PGOOD Voltage Low IPGOOD = 500µA 70 150 mV PGOOD Trip Level VFB with Respect to Set Output Voltage VFB Ramping Positive –15 –8 –2.5 % VFB Ramping Negative 2.5 8 15 % Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC3701E is guaranteed to meet performance specifications from 0 °C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: TJ = TA + (PD • θJA°C/W) Note 4: Dynamic supply current is higher due to gate charge being delivered at the switching frequency. Note 5: The LTC3701 is tested in a feedback loop that servos ITH/RUN to a specified voltage and measures the resultant VFB voltage. Note 6: Peak current sense voltage is reduced dependent on duty cycle to a percentage of value as given in Figure 2. TYPICAL PERFOR A CE CHARACTERISTICS Reference Voltage vs Temperature TEMPERATURE ( °C) –60 0.795 0.800 0.805 60 3701 G01 0.790 0.785 –20 20 –40 80 0 40 100 0.780 0.775 0.810 VIN = 4.2V TEMPERATURE ( °C) –60 0.38 0.44 0.50 0 40 100 3701 G02 0.32 0.26 0.36 0.42 0.48 0.30 0.24 0.34 0.40 0.46 0.28 0.22 0.20 –40 –20 20 60 80 VIN = 4.2V TEMPERATURE ( °C) –60 0 100 300 400 500 1000 700 –20 20 40 3701 G03 200 800 900 600 –40 0 60 80 100 VIN = 4.2V PLLLPF = 2.4V PLLLPF = 0V PLLLPF = FLOAT Shutdown Threshold vs Temperature Oscillator Frequency vs Temperature |
Similar Part No. - LTC3701_15 |
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Similar Description - LTC3701_15 |
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