MAX680, MAX681

+5V to ±10V Voltage Converters

Generates Positive and Negative Doubled Outputs Simultaneously
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Status Explanations for product status codes

Part Number Status
MAX680 Active: In Production.
MAX681 This product is No Longer Available. See Ordering Information for recommended replacements.

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.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 85kB)
Send this datasheet to any email addressE-Mail

Key Features

  • 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
 

Applications/Uses

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

Key Specifications:

Charge Pumps
Part Number Topology VIN
(V)		 VIN
(V)		 ICC
(mA)		 Unadj. VOUT
(V)		 IOUT
(A)		 Oper. Freq.
(kHz)		 Industry Qualified Oper. Temp.
(°C)		 Package/Pins Smallest Available Pckg.
(mm2)		 Budgetary Price
min max max typ max w/pins See Notes
MAX680 
Doubler
Dual Output
Inverter
Unregulated
 2 6 2
+2xVIN
-2xVIN
 0.01 8 MIL-STD-883B
-55 to +125
-40 to +85
0 to +70
CDIP(N)/8
PDIP(N)/8
SOIC(N)/8
 30.9 $1.92 @1k
See All Charge Pumps (45)
Pricing 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 968   Load-Disconnect Switch Halts Battery Discharge to Protect Rechargeable Batteries

Product Guides

Microprocessor Supervisory (PDF)

Reliability Reports

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Software/Models

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Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Part Number Free
Sample		 Buy Status Explanations for product status codes Recommended Replacement Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX680C/D    
Active   DICE SALES;NA pin;DICE;

Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
See data sheet
MAX680CPA    
Active   PDIP(N);8 pin;79.7 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+  
Active   PDIP(N);8 pin;79.7 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
MAX680CSA    
Active   SOIC(N);8 pin;30.9 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+  
Active   SOIC(N);8 pin;30.9 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    
Active   SOIC(N);8 pin;30.9 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    
Active   N.SO;8 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX680EJA    
Active MAX680EPA

 		 CDIP(N);8 pin;82.6 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
MAX680EPA    
Active   PDIP(N);8 pin;79.7 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+  
Active   PDIP(N);8 pin;79.7 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
Part Number Free
Sample		 Buy Status Explanations for product status codes Recommended Replacement Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX680ESA    
Active   SOIC(N);8 pin;30.9 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+  
Active   SOIC(N);8 pin;30.9 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    
Active   SOIC(N);8 pin;30.9 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    
Active   SOIC(N);8 pin;30.9 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
MAX680MJA    
Active   CDIP(N);8 pin;82.6 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    
Active   CDIP(N);8 pin;82.6 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
MAX681CPD     N/A No Longer Available MAX864
MAX865

 		 PDIP(N);14 pin;160.5 mm²

Land Pattern: Not Available
Use pkgcode/variation: P14M-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX681EPD     N/A No Longer Available MAX864
MAX865

 		 PDIP(N);14 pin;160.5 mm²

Land Pattern: Not Available
Use pkgcode/variation: P14M-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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Information Index

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

 


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