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Maxim > Products > Power and Battery Management 
MAX682, MAX683, MAX684
3.3V Input to Regulated 5V Output Charge Pumps

Only 1µF Capacitor per 100mA Output


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Data Sheet
FULL DATA SHEET (PDF, 168kB)
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Description
The MAX682/MAX683/MAX684 charge-pump regulators generate 5V from a 2.7V to 5.5V input. They are specifically designed to serve as high-efficiency auxiliary supplies in applications that demand a compact design. The MAX682, MAX683, and MAX684 deliver 250mA, 100mA, and 50mA output current, respectively.

These complete 5V regulators require only one resistor and three external capacitors—no inductors are needed. High switching frequencies (externally adjustable up to 2MHz) and a unique regulation scheme allow the use of capacitors as small as 1µF per 100mA of output current. The MAX683/MAX684 are offered in a space-saving 8-pin µMAX package that is only 1.1mm high, while the MAX682 is available in an 8-pin SO.

Key Features   Applications/Uses
  • Ultra-Small: 1µF Capacitors per 100mA of Output Current
  • No Inductors Required
  • 1.1mm Height in µMAX Package (MAX683/MAX684)
  • Up to 250mA Output Current (MAX682)
  • Regulated ±4% Output Voltage
  • 50kHz to 2MHz Adjustable Switching Frequency
  • 2.7V to 5.5V Input Voltage
  • 100µA Quiescent Current in Pulse-Skipping Mode
  • 0.1µA Shutdown Current

 
  		• 3.3V to 5V Local Conversion Applications
  		• 3V to 5V GSM SIMM Cards
  		• Backup Battery Boost Converters
  		• Battery-Powered Applications
  		• Flash Memory Supplies
  		• Miniature Equipment
  		• PCMCIA Cards

    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) Features Package Operating Temp. Range (°C) Price**
    MAX682  Regulated 2.7 5.5 0.18 5 0.25 1000
    •Adjustable Freq.
    •Shutdown
    		 SOIC/8 -40 to +85 $2.48 @ 1k
    MAX683  0.1 uMAX/8 $1.98 @ 1k
    MAX684  0.05 uMAX/8 $1.65 @ 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
    MAX682, MAX683, MAX684: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 725: DC/DC Conversion without Inductors - MAX682, MAX683, MAX684
  		• Application Note 1804: Driving LEDs in Battery-Operated Applications: Controlling Brightness Power Efficiently - MAX682, MAX683, MAX684

    Evaluation Kits
    none

    Reliability Reports
  		• Show FIT data for:
  		• Reliability Report: MAX682ESA.pdf
  		• 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: 1-12 of 12

    MAX682 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX682ESA  
    		SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX682ESA-T  
    		SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX682ESA+T  
    		SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX682ESA+  
    		SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX683 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX683EUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX683EUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX683EUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX683EUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX684 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX684EUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX684EUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX684EUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX684EUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
    • Regulated 250mA charge pump (MAX682)
    • Regulated 100mA charge pump (MAX683)
    • Regulated 50mA charge pump (MAX684)

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    Document Ref.: 19-0177; Rev 1; 1998-08-01
    This page last modified: 2007-06-01




             


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