547799 MAXIM | Alldatasheet
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Technical content
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. 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-con- version 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 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. Small LCD Panels Cell Phones Handy-Terminals PDAs ♦ 5-Pin SOT23 Package ♦ +2.0V to +5.5V Input Voltage Range ♦ 98% Voltage-Conversion Efficiency ♦ 110µA Quiescent Current (MAX1682) ♦ Requires Only Two Capacitors ♦ Up to 45mA Output Current MAX1682/MAX1683 Switched-Capacitor Voltage Doublers OUT INC1-
15 C1+GND
19-1305; Rev 3; 11/10 PART MAX1682EUK+T -40°C to +85°C TEMP RANGE PIN- PACKAGE
5 SOT23-5
Ordering Information
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. MAX1683EUK+T -40°C to +85°C 5 SOT23-5 SOT TOP MARK ACCL ACCM
Switched-Capacitor Voltage Doublers ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = +5.0V, capacitor values from Table 2, TA = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (VIN = +5.0V, capacitor values from Table 2, TA = -40°C to +85°C, unless otherwise noted.) (Note 3) 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 specificatio ns is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note 2: Once started, the MAX1682/MAX1683 typically operate down to 1V. Note 3: Specifications at -40°C to +85°C are guaranteed by design. Continuous Power Dissipation (T A = +70°C) Operating Temperature Range (Note 2) TA = +25°C TA = +25°C IOUT = 0mA, TA = +25°C CONDITIONS V1Minimum Operating Voltage µA230 310 110 145No-Load Supply Current 8.4 12 15.6 kHz24.5 35 45.5Oscillator Frequency %98 99.9Voltage Conversion Efficiency UNITSMIN TYP MAXPARAMETER Note 1: Avoid shorting OUT to GND, as it may damage the device. For temperatures above +85°C, shorting OUT to GND even instantaneously will damage the device. MAX1682 MAX1683 RLOAD = 10kΩ TA = +25°C TA = 0°C to +85°C V2.1 1.8 5.5 2.0 1.7 5.5Supply Voltage Range MAX1682 MAX1683 TA = +25°C TA = 0°C to +85°CIOUT = 5mA 20 50 Ω65Output Resistance IOUT = 0mA IOUT = 5mA MAX1683 MAX1682 RLOAD = 10kΩ MAX1683 MAX1682 CONDITIONS %97Voltage Conversion Efficiency Ω65Output Resistance kHz17.5 57.8Oscillator Frequency 6.6 18.6 V2.3 5.5Supply Voltage Range µA350 160No-Load Supply Current UNITSMIN TYP MAXPARAMETER
Switched-Capacitor Voltage Doublers OUTPUT RESISTANCE vs. SUPPLY VOLTAGE MAX1682/83 TOC1 VIN (V) OUTPUT RESISTANCE (Ω) MAX1683, C1 = C2 = 3.3μF MAX1683, C1 = C2 = 10μF MAX1682, C1 = C2 = 10μF -40 0 -20 20 40 60 80 MAX1682 OUTPUT RESISTANCE vs. TEMPERATURE MAX1682/83 TOC02 TEMPERATURE (°C) OUTPUT RESISTANCE (Ω) ILOAD = 5mA VIN = 5V VIN = 3.3V VIN = 2V -40 0 - 2 0 2 04 06 08 0 MAX1683 OUTPUT RESISTANCE vs. TEMPERATURE MAX1682/83 TOC03 TEMPERATURE (°C) OUTPUT RESISTANCE (Ω) ILOAD = 5mA VIN = 5V VIN = 3.3V VIN = 2V 100 120 01 5 2 05 1 0 2 53 03 5 MAX1682 OUTPUT RESISTANCE vs. CAPACITANCE MAX1682/83 TOC4 CAPACITANCE (μF) OUTPUT RESISTANCE (Ω) VIN = 5V VIN = 3.3V VIN = 2V 200 100 400 300 600 500 700 900 800 1000 01 0 1 55 2 02 53 03 54 0 MAX1683 OUTPUT VOLTAGE RIPPLE vs. OUTPUT CURRENT MAX1682/83 TOC07 IOUT (mA) VRIPPLE (mV) C1 = C2 =1μF C1 = C2 = 3.3μF C1 = C2 = 10μF 0 5 10 15 20 25 30 35 MAX1683 OUTPUT RESISTANCE vs. CAPITANCE MAX1682/83 TOC05 CAPACITANCE (μF) OUTPUT RESISTANCE (Ω) VIN = 2V VIN = 3.3V VIN = 5V 200 100 400 300 500 600 700 800 01 0 1 55 2 02 53 03 54 0 MAX1682 OUTPUT VOLTAGE RIPPLE vs. OUTPUT CURRENT MAX1682/83 TOC06 IOUT (mA) VRIPPLE (mV) C1 = C2 = 3.3μF C1 = C2 = 10μF C1 = C2 = 33μF 100 150 200 250 300 SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX1682/83 TOC09 SUPPLY VOLTAGE (V) SUPPLY CURRENT (μA) MAX1683 MAX1682 Typical Operating Characteristics (Typical Operating Circuit, VIN = +5V, C1 = C2 = 10µF for the MAX1682 and 3.3µF for the MAX1683, TA = +25°C, unless otherwise noted.)
Switched-Capacitor Voltage Doublers Typical Operating Characteristics (continued) (Typical Operating Circuit, VIN = +5V, C1 = C2 = 10µF for the MAX1682 and 3.3µF for the MAX1683, TA = +25°C, unless otherwise noted.) 11.0 11.5 12.0 12.5 -40 0 20- 2 0 4 06 08 0 MAX1682 OSCILLATOR FREQUENCY vs. TEMPERATURE MAX1682/83 TOC10 TEMPERATURE (°C) OSCILLATOR FREQUENCY (kHz) VIN = 5V VIN = 3.3V VIN = 2V -40 0 20- 2 0 4 06 08 0 MAX1683 OSCILLATOR FREQUENCY vs. TEMPERATURE MAX1682/83 TOC11 TEMPERATURE (°C) OSCILLATOR FREQUENCY (kHz) VIN = 5V VIN = 3.3V VIN = 2V 0 1 01 52 05 2 53 03 5 4 5 40 50MAX1682 OUTPUT VOLTAGE vs. OUTPUT CURRENT MAX1682/83 TOC12 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) VIN = 5V VIN = 3.3V VIN = 2V 0 1 01 52 05 2 53 03 5 4 5 40 50MAX1683 OUTPUT VOLTAGE vs. OUTPUT CURRENT MAX1682/83 TOC13 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) VIN = 5V VIN = 3.3V VIN = 2V 20μs/div VOUT 20mV/div ILOAD = 5mA, VIN = 5V, C1 = C2 = 10μF MAX1682 OUTPUT RIPPLE MAX1682toc16 100 01 0 5 1 52 02 53 0 MAX1682 EFFICIENCY vs. LOAD CURRENT MAX1682/83 TOC14 LOAD CURRENT (mA) EFFICIENCY (%) VIN = 5V VIN = 3.3VVIN = 2V 100 01 0 5 1 52 02 53 0 MAX1683 EFFICIENCY vs. LOAD CURRENT MAX1682/83 TOC15 LOAD CURRENT (mA) EFFICIENCY (%) VIN = 5V VIN = 3.3V VIN = 2V MAX1683 OUTPUT RIPPLE MAX1682toc17 ILOAD = 5mA, VIN = 5V, C1 = 3.3μF, C2 = 10μF 20μs/div VOUT 20mV/div 0.5 1.0 1.5 2.0 2.5 700 30 10100 70300 7 3 1 0.7 0.3 START-UP VOLTAGE vs. RESISTIVE LOAD MAX1682toc18 RLOAD (kΩ) VSTART (V) MAX1682 MAX1683
functions, such as driving the switches, oscillator, etc. as input voltage, temperature, and frequency. capacitor circuit (Figures 2a and 2b).
1 GND Ground
3 C1- Negative Terminal of the Flying
4 IN Input Supply
5 C1+ Positive Terminal of the Flying
Figure 1. Simplified Functional Diagram of Ideal Voltage
Efficiency Considerations section. how the capacitor affects output resistance. Table 1. Recommended Capacitor Manufacturers Table 2. Suggested Capacitor Values for Table 3. Suggested Capacitor Values for
Switched-Capacitor Voltage Doublers SOT-23 5L .EPS
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to th e package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
5 SOT23 U5+2 21-0057 90-0174
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circu it patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 9 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products. Switched-Capacitor Voltage Doublers
Revision History
3 11/10 Added lead-free parts 1