Datasheet MAX1682, MAX1683 (Maxim)

19-1305; Rev 3; 11/10
Switched-Capacitor Voltage Doublers MAX1682/MAX1683 General Description ____________________________Features
The ultra-small MAX1682/MAX1683 monolithic, CMOS ♦
5-Pin SOT23 Package
charge-pump voltage doublers accept input voltages ranging from +2.0V to +5.5V. Their high voltage-con- ♦
+2.0V to +5.5V Input Voltage Range
version efficiency (over 98%) and low operating current ♦
98% Voltage-Conversion Efficiency
(110µA for MAX1682) make these devices ideal for both battery-powered and board-level voltage-doubler ♦
110µA Quiescent Current (MAX1682)
applications. ♦
Requires Only Two Capacitors
Oscillator control circuitry and four power MOSFET ♦
Up to 45mA Output Current
switches are included on-chip. The MAX1682 operates at 12kHz, and the MAX1683 operates at 35kHz. A typi- cal 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.
________________________Applications Ordering Information
Small LCD Panels
TEMP PIN- SOT PART
Cell Phones
RANGE PACKAGE TOP MARK MAX1682
EUK+T -40°C to +85°C 5 SOT23-5 ACCL Handy-Terminals
MAX1683
EUK+T -40°C to +85°C 5 SOT23-5 ACCM PDAs
Note:
These parts are available in tape-and-reel only. Minimum order quantity is 2500 pieces. +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel.
Typical Operating Circuit
INPUT 5 4 VIN C1+ IN SUPPLY
Pin Configuration
VOLTAGE C1 MAX1682 TOP VIEW MAX1683 3 C1- GND 1 5 C1+ OUTPUT 2 OUT VOLTAGE MAX1682 OUT 2 2 x VIN MAX1683 1 C2 GND C1- 3 4 IN
VOLTAGE DOUBLER SOT23-5 ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.