MAX1682

19-1305; Rev 1; 8/98 Switched-Capacitor Voltage Doublers General Description The ultra-small MAX1682/MAX1683 monolithic, CMOS charge-pump voltage doublers accept input voltages ranging from +2.0V to +5.5V. Their high voltage-conversion efficiency (over 98%) and low operating current (110µA for MAX1682) make these devices ideal for both battery-powered and board-level voltage-doubler applications. Oscillator control circuitry and four power MOSFET switches are included on-chip. The MAX1682 operates at 12kHz and the MAX1683 operates at 35kHz. A typical application includes generating a 6V supply to power an LCD display in a hand-held PDA. Both parts are available in a 5-pin SOT23 package and can deliver 30mA with a typical voltage drop of 600mV. ____________________________Features o 5-Pin SOT23 Package o +2.0V to +5.5V Input Voltage Range o 98% Voltage-Conversion Efficiency o 110µA Quiescent Current (MAX1682) o Requires Only Two Capacitors o Up to 45mA Output Current MAX1682/MAX1683 ________________________Applications Small LCD Panels Cell Phones Handy-Terminals PDAs PART MAX1682C/D Ordering Information TEMP. RANGE 0°C to +70°C PINPACKAGE Dice* 5 SOT23-5 Dice* 5 SOT23-5 SOT TOP MARK — ACLL — ACCM MAX1682EUK-T -40°C to +85°C MAX1683C/D 0°C to +70°C MAX1683EUK-T -40°C to +85°C Typical Operating Circuit Note: These parts are available in tape-and-reel only. Minimum order quantity is 2500 pieces. *Dice are tested at TA = +25°C. 5 C1+ IN 4 VIN INPUT SUPPLY VOLTAGE P...