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MAX1682, MAX1683
Switched-Capacitor Voltage Doublers

SOT23 Voltage Doubler Needs Only two External Caps; Ultra-Small LCD Supply for PDAs and Cell Phones


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Data Sheet
FULL DATA SHEET (PDF, 200kB)
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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.

Key Features   Applications/Uses
  • 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

 
  • Cell Phones
  • Handy Terminals
  • PDAs
  • Small LCD Panels

    Key Specifications:   Charge Pumps
    Part Number Topology VIN (min) (V) VIN (max) (V) Operating Current, ICC (max) (mA) Unadjusted VOUT (V) IOUT (typ) (A) Operating Frequency (kHz) Package RoHS Available Operating Temp. Range (°C) Price**
    MAX1682  Doubler
    Unregulated
    2 5.5 0.145 +2xVIN 0.045 12 SOT-23/5 Yes -40 to +85 $0.72 @ 1k
    MAX1683  0.31 35 $0.72 @ 1k
    See All Charge Pumps (51)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX1682, MAX1683: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  • Application Note 297: Tripler Converts 5V to 15V - MAX1683
  • Application Note 718: Properties of the Charge-Pump Voltage Splitter - MAX1682
  • Application Note 725: DC/DC Conversion without Inductors - MAX1682, MAX1683
  • Application Note 1791: Inductorless Voltage Converter Boosts a Single Lithium Cell - MAX1683
  • Application Note 1803: Simple Circuit Provides +5V Gate Bias From -48V Input - MAX1683
  • Application Note 1876: Doubler/Inverter Charge Pumps Divide by Two - MAX1682, MAX1683
  • Application Note 3202: 5V Auxiliary Power Supply Teams LDO and Charge Pump - MAX1683

    Evaluation Kits
    none

    Reliability Reports
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-9 of 9

    MAX1682 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1682C/D  
    DICE SALES;

    Use pkgcode/variation: DICE*
    See data sheet
    MAX1682EUK+  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1682EUK  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1682EUK-T  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1682EUK+T  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1683 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1683EUK+  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1683EUK  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1683EUK-T  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1683EUK+T  
    SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
    • Ideal for both battery-powered, and board-level voltage-conversion applications

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    Document Ref.: 19-1305; Rev 2; 2001-03-23
    This page last modified: 2007-06-01



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