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LM2660MM 데이터시트(PDF) 6 Page - Texas Instruments |
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LM2660MM 데이터시트(HTML) 6 Page - Texas Instruments |
6 / 20 page LM2660 SNVS135D – SEPTEMBER 1999 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) (Circuit of Figure 1) Oscillator Frequency vs Temperature (FC = Open) Figure 14. CONNECTION DIAGRAMS Figure 15. Top View 8-Lead SOIC (D) or VSSOP (DGK) Pin Description Function Pin Name Voltage Inverter Voltage Doubler Frequency control for internal oscillator: FC = open, fOSC = 10 kHz (typ); 1 FC Same as inverter. FC = V+, fOSC = 80 kHz (typ); FC has no effect when OSC pin is driven externally. Connect this pin to the positive terminal of charge- 2 CAP+ Same as inverter. pump capacitor. 3 GND Power supply ground input. Power supply positive voltage input. Connect this pin to the negative terminal of 4 CAP − Same as inverter. charge-pump capacitor. 5 OUT Negative voltage output. Power supply ground input. Low-voltage operation input. Tie LV to GND when input voltage is less than 3.5V. Above 3.5V, LV 6 LV can be connected to GND or left open. When LV must be tied to OUT. driving OSC with an external clock, LV must be connected to GND. Oscillator control input. OSC is connected to an internal 15 pF capacitor. An external capacitor can Same as inverter except that OSC cannot be driven by 7 OSC be connected to slow the oscillator. Also, an an external clock. external clock can be used to drive OSC. 8 V+ Power supply positive voltage input. Positive voltage output. 6 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LM2660 |
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