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LM3670 数据表(PDF) 4 Page - National Semiconductor (TI) |
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LM3670 数据表(HTML) 4 Page - National Semiconductor (TI) |
4 / 17 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V IN Pin: Voltage to GND −0.2V to 6.0V EN Pin: Voltage to GND −0.2V to 6.0V FB, SW Pin: (GND−0.2V) to (V IN + 0.2V) Junction Temperature (T J-MAX) −45˚C to +125˚C Storage Temperature Range −45˚C to +150˚C Maximum Lead Temperature (Soldering, 10 sec.) 260˚C ESD Rating (Note 3) Human Body Model: VIN,SW,FB,GND 2.0kV EN 500V Machine Model: 200V Operating Ratings (Notes 1, 2) Input Voltage Range 2.5V to 5.5V Recommended Load Current 0A to 350 mA Junction Temperature (T J) Range −40˚C to +125˚C Ambient Temperature (T A) Range −40˚C to +85˚C Thermal Properties Junction-to-Ambient Thermal Resistance ( θ JA) (SOT23-5) 250˚C/W Electrical Characteristics Limits in standard typeface are for T J = 25˚C. Limits in boldface type apply over the full operating junction temperature range (−40˚C ≤ T J ≤ +125˚C). Unless otherwise noted V IN = 3.6V, VOUT = 1.8V, I O=150mA, EN=VIN Symbol Parameter Condition Min Typ Max Units V IN Input Voltage Range 2.5 5.5 V V OUT Fixed Output Voltage 2.5V ≤ V IN ≤ 5.5V I O =10mA -1.5 +3.0 % 2.5V ≤ V IN ≤ 5.5V 0mA ≤ I O ≤ 350 mA −4.5 +3.0 % Adjustable Output Voltage 2.5V ≤ V IN ≤ 5.5V I O =10mA -1.0 +2.5 % 2.5V ≤ V IN ≤ 5.5V 0mA ≤ I O ≤ 350 mA -4.0 +2.5 % Line Regulation 2.5V ≤ V IN ≤ 5.5V I O =10mA 0.26 %/V Load Regulation 150 mA ≤ I O ≤ 350 mA 0.0014 %/mA V REF Internal Reference Voltage 0.5 V I Q_SHDN Shutdown Supply Current T A=85 oC 0.1 1 µA I Q_PFM DC Bias Current into V IN No load, device is not switching (V OUT forced higher than programmed output voltage) 15 30 µA V UVLO Minimum V IN below which V OUT will be disabled 2.4 V R DSON (P) Pin-Pin Resistance for PFET V IN=VGS=3.6V 360 690 m Ω R DSON (N) Pin-Pin Resistance for NFET V IN=VGS=3.6V 250 660 m Ω I LKG (P) P Channel Leakage Current V DS=5.5V 0.1 1 µA I LKG (N) N Channel Leakage Current V DS=5.5V 0.1 1.5 µA I LIM Switch Peak Current Limit 400 620 750 mA η Efficiency (V IN = 3.6V, VOUT = 1.8V) I LOAD =1mA 91 % I LOAD =10mA 94 I LOAD = 100 mA 94 I LOAD = 200 mA 94 I LOAD = 300 mA 92 I LOAD = 350 mA 90 www.national.com 4 |
类似零件编号 - LM3670 |
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类似说明 - LM3670 |
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