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Maxim > Products > [Power and Battery Management]  [Military/Aerospace] 
MAX680, MAX681
+5V to ±10V Voltage Converters

Generates Positive and Negative Doubled Outputs Simultaneously


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Data Sheet
FULL DATA SHEET (PDF, 85kB)
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Description
The MAX680/MAX681 are monolithic, CMOS, dual charge-pump voltage converters that provide ±10V outputs from a +5V input voltage. The MAX680/MAX681 provide both a positive step-up charge pump to develop +10V from +5V input and an inverting charge pump to generate the -10V output. Both parts have an on-chip, 8kHz oscillator. The MAX681 has the capacitors internal to the package, and the MAX680 requires four external capacitors to produce both positive and negative voltages from a single supply.

The output source impedances are typically 150Ω, providing useful output currents up to 10mA. The low quiescent current and high efficiency make this device suitable for a variety of applications that need both positive and negative voltages generated from a single supply.

The MAX864/MAX865 are also recommended for new designs. The MAX864 operates at up to 200kHz and uses smaller capacitors. The MAX865 comes in the smaller µMAX® package.

Key Features   Applications/Uses
  • 95% Voltage-Conversion Efficiency
  • 85% Power-Conversion Efficiency
  • +2V to +6V Voltage Range
  • Only Four External Capacitors Required (MAX680)
  • No Capacitors Required (MAX681)
  • 500µA Supply Current
  • Monolithic CMOS Design

 
  		• ±6V from 3V Lithium Cell
  		• ±10V from +5V Logic Supply
  		• Battery-Powered Applications
  		• Data Acquisition
  		• Handheld Instruments (PDAs, Palmtops)
  		• Operational Amplifier Power Supplies
  		• Panel Meters

    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) Industry Qualified Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX680  Doubler
    Dual Output
    Inverter
    Unregulated     		2 6 2 +2xVIN
    -2xVIN     		0.01 8 MIL-STD-883B CDIP(N)/8
    PDIP(N)/8
    SOIC(N)/8     		31 -55 to +125
    -40 to +85
    0 to +70     		$1.87 @ 1k
    MAX681   -  PDIP(N)/14 160  
    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
    MAX680, MAX681: Typical Operating Circuits
    Typical Operating Circuits

    Application Notes
  		• Application Note 1: MOSFET Pass Element Yields 100mV-Dropout Regulator - MAX680
  		• Application Note 130: Analog Switches Operate With 3V or 5V Supplies - MAX681
  		• Application Note 968: Load-Disconnect Switch Consumes Only 8µA - MAX680

    Evaluation Kits
    none

    Design Guides
  		• Microprocessor Supervisory (PDF)

    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: 1-18 of 18

    MAX680 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX680EJA  
    		CDIP(N);8 pin;83 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX680MJA  
    		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
    MAX680MJA/883B  
    		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
    MAX680C/D  


    Land Pattern: Not Available

    		See data sheet
    MAX680CPA  
    		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
    MAX680CPA+  
    		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
    MAX680EPA  
    		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
    MAX680EPA+  
    		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
    MAX680CSA  
    		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
    MAX680CSA-T  
    		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
    MAX680CSA+  
    		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
    MAX680CSA+T  
    		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
    MAX680ESA  
    		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
    MAX680ESA-T  
    		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
    MAX680ESA+  
    		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
    MAX680ESA+T  
    		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
    MAX681 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX681CPD  
    		PDIP(N);14 pin;160 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14M-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX681EPD  
    		PDIP(N);14 pin;160 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14M-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    Related Products
    MAX864 Dual-Output Charge Pump with Shutdown

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    Document Ref.: 19-0896; Rev 1; 1996-07-01
    This page last modified: 2007-06-27


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