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LM2707MFX датащи(PDF) 3 Page - National Semiconductor (TI) |
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LM2707MFX датащи(HTML) 3 Page - National Semiconductor (TI) |
3 / 19 page Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V IN, FB, and EN pins -0.3V to 7.5V SW and V OVP pins -0.3V to 21V Continuous Power Dissipation (T A =25 oC) 800mW Switch Peak Current 400mA Junction Temperature (T J-MAX) 150oC Storage Temperature Range -65oC to +150o C Maximum Lead Temperature (Soldering) (Note 3) ESD Rating (Note 4) Human Body Model: Machine Model: 2kV 200V Operating Ratings (Notes 1, 2) Input Voltage Range 2.3V to 7.0V Minimum C X Capacitance 10pF Junction Temperature (T J) Range -30˚C to +125˚C Ambient Temperature (T A) Range (Note 5) -30˚C to +85˚C Thermal Properties Juntion-to-Ambient Thermal Resistance ( θ JA) (Note 6) 125oC/W Electrical Characteristics (Notes 2, 7) Unless otherwise specified: V IN = 3.0V, Lx = Open, VOVP = Open, VFB = GND, Cx = 300pF, VEN =VIN,TA = 25˚C. Symbol Parameter Condition Min Typ Max Units Oscillator Frequency Programming (C x pin) I chg C x Charging Current V Cx = 0.1V, VFB =1V 16 24 30 µA I dis C x Discharging Current V Cx = 1.0V, VFB =1V 35 52 65 µA I dis/Ichg Charge and Discharge Current Ratio 2.2 V Cx, High C x Threshold Voltage + 810 860 910 mV V Cx, Low C x Threshold Voltage - 260 300 340 mV V OSC C X Oscillation Voltage (V Cx, High)-(VCx, Low) 520 560 600 mV Current Limiting Comparator (L x pin) I LIMIT Inductor Current Limit (Note 8) 220 260 300 mA R IN Pin 1-2 Total Resistance Measured between pin 1 and pin 2 380 440 500 m Ω R SC Internal Effective Resistance for Inductor Current Limit Sence (Notes 9, 10) 300 m Ω Output Switch Section (SW pin) V sw, DS Output Transistor Drain-to-Source Voltage V Cx = 0.1V, ISW = 200mA 0.12 0.22 V R DS-ON Switch ON Resistance R DS-ON =Vsw,DS ÷ISW V Cx = 0.1V, ISW = 200mA 0.60 1.1 Ω I sw,Off Output Transistor Off Leak Current V FB = 1V, VSW = 20V 0.01 2.0 µA Feedback Comparator section (FB pin) V ref Reference Voltage 0.495 0.515 0.535 V I FBin FB Pin Output Current V FB = 0.4V -0.2 -0.075 µA Shutdown Section (EN pin) V EN, High EN Input Voltage + ON mode 1.2 7.0 V V EN, Low EN Input Voltage - Shutdown Mode 0.3 V I ENin EN pin Input Bias Current V EN = 3.0V 25 40 µA www.national.com 3 |
Аналогичный номер детали - LM2707MFX |
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Аналогичное описание - LM2707MFX |
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