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LM2686 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM2686 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 8 page LM2686 Regulated Switched Capacitor Voltage Converter General Description The LM2686 CMOS charge-pump voltage converter oper- ates as an input voltage doubler and a +5V regulator for an input voltage in the range of +2.85V to +6.5V. Three low cost capacitors are used in this circuit to provide up to 50mA of output current at +5.0V (± 5%). The LM2686 operates at a 130 kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 450µA (operating efficiency greater than 80% with most loads) and 6.0µA typical shutdown current, the LM2686 is ideal for use in battery powered systems. The device is in a small 14-pin TSSOP package. Features n +5V regulated output n Doubles input supply voltage n TSSOP 14 package n 80% typical conversion efficiency at 25mA n Input voltage range of 2.85V to 6.5V n Independent shutdown control pins Applications n Cellular phones n Pagers n PDAs n Handheld Instrumentation n 3.3V to 5V Voltage Conversion Applications Typical Application and Connection Diagram Ordering Information Order Number Package Type NSC Package Drawing Supplied As LM2686MTC TSSOP-14 MTC14 94 Units, Rail LM2686MTCX TSSOP-14 MTC14 2.5k Units, Tape and Reel DS101141-1 DS101141-2 14-Pin TSSOP November 1999 © 1999 National Semiconductor Corporation DS101141 www.national.com |
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