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LM2662 датащи(PDF) 2 Page - National Semiconductor (TI) |
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LM2662 датащи(HTML) 2 Page - National Semiconductor (TI) |
2 / 12 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. Supply Voltage (V+ to GND, or GND to OUT) 6V LV (OUT − 0.3V) to (GND + 3V) FC, OSC, SD The least negative of (OUT − 0.3V) or (V+ − 6V) to (V+ + 0.3V) V+ and OUT Continuous Output Current 250 mA Output Short-Circuit Duration to GND (Note 2) 1 sec. Power Dissipation (T A = 25˚C) (Note 3) 735 mW T J Max (Note 3) 150˚C θ JA (Note 3) 170˚C/W Operating Junction Temperature Range −40˚C to +85˚C Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 10 seconds) 300˚C ESD Rating 2 kV Electrical Characteristics Limits in standard typeface are for T J = 25˚C, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: V+ = 5V, FC = Open, C 1 =C2 = 47 µF.(Note 4) Symbol Parameter Condition Min Typ Max Units V+ Supply Voltage R L = 1k Inverter, LV = Open 3.5 5.5 Inverter, LV = GND 1.5 5.5 V Doubler, LV = OUT 2.5 5.5 I Q Supply Current No Load FC = V+ (LM2662) 1.3 4 mA LV = Open SD = Ground (LM2663) FC = Open 0.3 0.8 I SD Shutdown Supply Current 10 µA (LM2663) V SD Shutdown Pin Input Voltage Shutdown Mode 2.0 (Note 5) V (LM2663) Normal Operation 0.3 I L Output Current 200 mA R OUT Output Resistance (Note 6) I L = 200 mA 3.5 7 Ω f OSC Oscillator Frequency (Note 7) OSC = Open FC = Open 7 20 kHz FC=V+ 55 150 f SW Switching Frequency (Note 8) OSC = Open FC = Open 3.5 10 kHz FC=V+ 27.5 75 I OSC OSC Input Current FC = Open ±2 µA FC=V+ ±10 P EFF Power Efficiency R L (500) between V + and OUT 90 96 % I L = 200 mA to GND 86 V OEFF Voltage Conversion Efficiency No Load 99 99.96 % Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 2: OUT may be shorted to GND for one second without damage. However, shorting OUT to V+ may damage the device and should be avoided. Also, for tem- peratures above 85˚C, OUT must not be shorted to GND or V+, or device may be damaged. Note 3: The maximum allowable power dissipation is calculated by using PDMax =(TJMax −TA)/θJA, where TJMax is the maximum junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance of the specified package. Note 4: In the test circuit, capacitors C1 and C2 are 47 µF, 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output voltage and efficiency. Note 5: In doubling mode, when Vout > 5V, minimum input high for shutdown equals Vout −3V. Note 6: Specified output resistance includes internal switch resistance and capacitor ESR. Note 7: For LM2663, the oscillator frequency is 150 kHz. Note 8: The output switches operate at one half of the oscillator frequency, fOSC = 2fSW. www.national.com 2 |
Аналогичный номер детали - LM2662 |
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Аналогичное описание - LM2662 |
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