MAX1682/MAX1683 19-1305 Rev 3 11/10 Switched-Capacitor Voltage Doublers General Description Features The ultra-small MAX1682/MAX1683 monolithic, CMOS 5-Pin SOT23 Package charge-pump voltage doublers accept input voltages +2.0V to +5.5V Input Voltage Range ranging from +2.0V to +5.5V. Their high voltage-con- version efficiency (over 98%) and low operating current 98% Voltage-Conversion Efficiency (110A for MAX1682) make these devices ideal for 110A Quiescent Current (MAX1682) both battery-powered and board-level voltage-doubler 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 RANGE PACKAGE TOP MARK Cell Phones MAX1682EUK+T -40C to +85C 5 SOT23-5 ACCL Handy-Terminals MAX1683EUK+T -40C to +85C 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 54 V IN C1+ IN SUPPLY Pin Configuration VOLTAGE C1 MAX1682 TOP VIEW MAX1683 3 C1- GND15 C1+ OUTPUT 2 OUT VOLTAGE MAX1682 2 OUT 2 x V MAX1683 IN 1 C2 GND C1-34 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 Maxims website at www.maxim-ic.com.Switched-Capacitor Voltage Doublers ABSOLUTE MAXIMUM RATINGS IN to GND.................................................................+6V to -0.3V Operating Temperature Range OUT to GND.......................................................+12V, V - 0.3V MAX1682EUK/MAX1683EUK ...........................-40C to +85C IN OUT Output Current............................................................50mA Junction Temperature......................................................+150C Output Short-Circuit Duration .................................1sec (Note 1) Storage Temperature Range .............................-65C to +160C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10sec) .............................+300C A SOT23-5 (derate 7.1mW/C above +70C)...................571mW Soldering Temperature (reflow) .......................................+260C Note 1: Avoid shorting OUT to GND, as it may damage the device. For temperatures above +85C, shorting OUT to GND even instantaneously will damage the device. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +5.0V, capacitor values from Table 2, T = 0C to +85C, unless otherwise noted. Typical values are at T = +25C.) IN A A PARAMETER CONDITIONS MIN TYP MAX UNITS MAX1682 110 145 No-Load Supply Current T = +25C A A MAX1683 230 310 T = +25C 2.0 1.7 5.5 A Supply Voltage Range R = 10k V LOAD T = 0C to +85C 2.1 1.8 5.5 A Minimum Operating Voltage (Note 2) 1 V MAX1682 8.4 12 15.6 Oscillator Frequency T = +25C kHz A MAX1683 24.5 35 45.5 T = +25C 20 50 A Output Resistance I = 5mA OUT T = 0C to +85C 65 A Voltage Conversion Efficiency I = 0mA, T = +25C 98 99.9 % OUT A Note 2: Once started, the MAX1682/MAX1683 typically operate down to 1V. ELECTRICAL CHARACTERISTICS (V = +5.0V, capacitor values from Table 2, T = -40C to +85C, unless otherwise noted.) (Note 3) IN A PARAMETER CONDITIONS MIN TYP MAX UNITS MAX1682 160 No-Load Supply Current A MAX1683 350 Supply Voltage Range R = 10k 2.3 5.5 V LOAD MAX1682 6.6 18.6 Oscillator Frequency kHz MAX1683 17.5 57.8 Output Resistance I = 5mA 65 OUT Voltage Conversion Efficiency I = 0mA 97 % OUT Note 3: Specifications at -40C to +85C are guaranteed by design. 2 MAX1682/MAX1683