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MAX660
CMOS Monolithic Voltage Converter

Inverts or Doubles Input Voltage


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 208kB)
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Description
The MAX660 monolithic, charge-pump voltage inverter converts a +1.5V to +5.5V input to a corresponding-1.5V to -5.5V output. Using only two low-costcapacitors, the charge pump's 100mA output replaces switching regulators, eliminating inductors and their associated cost, size, and EMI. Greater than 90% efficiency over most of its load-current range combined with a typical operating current of only 120µA provides ideal performance for both battery-powered and board-level voltage conversion applications. The MAX660 can also double the output voltage of an input power supply or battery, providing +9.35V at 100mA from a +5V input.

A frequency control (FC) pin selects either 10kHz typ or 80kHz typ (40kHz min) operation to optimize capacitor size and quiescent current. The oscillator frequency can also be adjusted with an external capacitor ordriven with an external clock. The MAX660 is a pin-compatible, high-current upgrade of the ICL7660.

The MAX660 is available in both 8-pin DIP and small-outline packages in commercial, extended, and military temperature ranges.

For 50mA applications, consider the MAX860/MAX861 pin-compatible devices (also available in ultra-small µMAX packages).

Key Features   Applications/Uses
  • Small Capacitors
  • 0.65V Typ Loss at 100mA Load
  • Low 120µA Operating Current
  • 6.5Ω Typ Output Impedance
  • Guaranteed ROUT < 15Ω for C1 = C2 = 10µF
  • Pin-Compatible High-Current ICL7660 Upgrade
  • Inverts or Doubles Input Supply Voltage
  • Selectable Oscillator Frequency: 10kHz/80kHz
  • 88% Typ Conversion Efficiency at 100mA (IL to GND)

 
  • Handheld Instruments (PDAs, Palmtops)
  • Interface Power Supplies
  • Laptop Computers
  • Medical Instruments
  • Operational Amplifier Power Supplies

    Key Specifications:  Charge Pumps
    Part Number Topology VIN
    (V)
    VIN
    (V)
    ICC
    (mA)
    Unadj. VOUT
    (V)
    IOUT
    (A)
    Oper. Freq.
    (kHz)
    Industry Qualified Package/Pins Smallest Available Pckg.
    (mm2)
    Oper. Temp.
    (°C)
    Price
    min max max typ max w/pins See Notes
    MAX660 
    Doubler
    Inverter
    Unregulated
    1.2 5.5 0.5
    +2xVIN
    -VIN
    0.1 80 MIL-STD-883B
    CDIP(N)/8
    PDIP(N)/8
    SOIC(N)/8
    31
    -40 to +85
    0 to +70
    $2.95 @1k
    See All Charge Pumps (48)

    Diagram
    Typical Operating Circuits



    Application Notes
  • Application Note 44: Regulated Step-Up Converter Provides High Efficiency Without Inductors - MAX660
  • Application Note 673: 5-to-1.8V Converter Works Without Magnetics - MAX660
  • Application Note 1170: Circuit Connection Adds Current-Mode Operation To PFM Boost Converters - MAX660
  • Application Note 1780: Octal Trimpots Offer Rail-to-Rail Adjustments - MAX660
  • Application Note 1876: Doubler/Inverter Charge Pumps Divide by Two - MAX660

    Reliability Reports
  • Reliability Report: MAX660.pdf
  • Show FIT data 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: 1-15 of 15

    MAX660 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX660MJA    
    Active CDIP(N);8 pin;83 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J8-2*
    -55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660MJA/883B    
    Active CDIP(N);8 pin;83 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J8-2*
    -55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660C/D    
    Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    See data sheet
    MAX660CPA    
    Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-2*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660CPA+  
    Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+2*
    0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX660EPA    
    Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660EPA+  
    Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX660CSA    
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660CSA-T    
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660CSA+  
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX660CSA+T    
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX660ESA    
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660ESA-T    
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX660ESA+  
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX660ESA+T    
    Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
  • CMOS Monolithic Voltage Converter

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    Document Ref.: 19-3293; Rev 2; 1996-09-01
    This page last modified: 2007-05-30


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