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LM2575BN 데이터시트(PDF) 4 Page - Micrel Semiconductor |
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LM2575BN 데이터시트(HTML) 4 Page - Micrel Semiconductor |
4 / 9 page M9999-042205 4 April 2005 LM2575 Micrel, Inc. Electrical Characteristics (continued) LM2575 Units Symbol Parameter Conditions Typ Limit (Limits) (Note 2) DEVICE PARAMETERS, ADJUSTABLE REGULATOR I B Feedback Bias Current V OUT = 5V 50 100/500 nA DEVICE PARAMETERS, FIXED and ADJUSTABLE REGULATORS f O Oscillator Frequency 52 kHz 47/42 kHz (min) 58/63 kHz (max) V SAT Saturation Voltage I OUT = 1A (Note 4) 0.9 V 1.2/1.4 V(max) DC Max Duty Cycle (ON) (Note 5) 98 % 93 %(min) I CL Current Limit Peak Current, t ON ≤ 3µs (Note 4) 2.2 A 1.7/1.3 A(min) 3.0/3.2 A(max) I L Output Leakage Current V IN = 40V, (Note 6), Output = 0V 2 mA(max) Output = –1V 7.5 mA (Note 6) Output = –1V 30 mA(max) I Q Quiescent Current (Note 6) 5 mA 10 mA(max) I STBY Standby Quiescent ON/OFF Pin = 5V (OFF) 50 µA Current 200 µA(max) θJA Thermal Resistance T Package, Junction to Ambient (Note 7) 65 °C/W θJA T Package, Junction to Ambient (Note 8) 45 θJC T Package, Junction to Case 2 θJA N Package, Junction to Ambient (Note 9) 85 θJA WM Package, Junction to Amb. (Note 9) 100 |
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