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NCP1521 데이터시트(PDF) 4 Page - ON Semiconductor |
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NCP1521 데이터시트(HTML) 4 Page - ON Semiconductor |
4 / 17 page NCP1521 http://onsemi.com 4 ELECTRICAL CHARACTERISTICS (Typical values are referenced to TA = +25°C, Min and Max values are referenced −40°C to +85 °C ambient temperature, unless otherwise noted, operating conditions VIN = 3.6 V, VOUT = 1.8 V, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Input Voltage Range VIN 2.7 − 5.5 V Undervoltage Lockout (VIN Falling) VUVLO 2.3 2.5 2.6 V Quiescent Current PFM No Load Iq − 30 45 mA Standby Current, EN Low Istb − 0.3 1.2 mA Oscillator Frequency Fosc 1.3 1.5 1.8 MHz Peak Inductor Current ILIM − 1200 − mA Feedback Reference Voltage Vref − 0.6 − V FB Pin Tolerance Overtemp @ Iout = 100 mA VFBtol −3.0 − 3.0 % Reference Voltage Line Regulation DVFB − 0.1 − % Output Voltage Accuracy @ Iout = 100 mA (Note 5) VOUT −3% Vnom +3% V Minimum Output Voltage VOUT − 0.9 − V Maximum Output Voltage VOUT − 3.3 − V Output Voltage Line Regulation (Vin = 2.7–5.5) Io = 100 mA DVOUT − 0.1 − % Voltage Load Regulation (IO = 100 mA to 300 mA) (IO = 100 mA to 600 mA) VLOADREG − − 0.0005 0.001 − − %/mA %/mA Load Transient Response (300 mA to 600 mA Load Step, Trise 10 ms) VOUT − 50 − mV Duty Cycle − − − 100 % P−Ch On−Resistance RLxH − 300 − m W N−Ch On−Resistance RLxL − 300 − m W P−Ch Leakage Current ILeakH − 0.05 − mA N−Ch Leakage Current ILeakL − 0.01 − mA Enable Pin High VENH 1.2 − − V Enable Pin Low VENL − − 0.4 V EN << H >> Input Current, EN = 3.6 V IENH − 2.0 − mA Soft−Start Time Tstart − 350 500 ms Thermal Shutdown Threshold TSD − 160 − °C Thermal Shutdown Hysteresis TSDH − 25 − °C 5. The overall output voltage tolerance depends upon the accuracy of the external resistor (R1, R2). |
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