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Maxim > Products > [Power and Battery Management] 
MAX770, MAX771, MAX772, MAX773
5V/12V/15V or Adjustable, High-Efficiency Low-IQ, Step-Up DC-DC Controllers

We Recommend Improved Performance Devices for New Designs


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (0)     All  
Status
Part Number Status Replacement
MAX770 This product is Not Recommended for New Designs. See Ordering Information for recommended replacements. MAX1771
MAX771 This product is Not Recommended for New Designs. See Ordering Information for recommended replacements. MAX1605
MAX772 This product is Not Recommended for New Designs. See Ordering Information for recommended replacements. MAX668
MAX773 This product is Not Recommended for New Designs. See Ordering Information for recommended replacements. MAX669

Data Sheet
FULL DATA SHEET (PDF, 216kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX770-MAX773 step-up switching controllers provide 90% efficiency over a 10mA to 1A load. A unique current-limited pulse-frequency-modulation (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using less than 110µA of supply current (vs. 2mA to 10mA for PWM converters).

These ICs use tiny external components. Their high switching frequencies (up to 300kHz) allow surface-mount magnetics of 5mm height and 9mm diameter.

The MAX770/MAX771/MAX772 accept input voltages from 2V to 16.5V. Output voltages are preset at 5V, (MAX770), 12V (MAX771), and 15V (MAX772); they can also be adjusted using two resistors.

The MAX773 accepts inputs from 3V to 16.5V. For a wider input range, it features an internal shunt regulator that allows unlimited higher input voltages. The MAX773's output can be set to 5V, 12V, or 15V, or it can be adjusted with two resistors.

The MAX770-MAX773 drive external N-channel MOSFET switches, allowing them to power loads up to 15W. If less power is required, use the MAX756/MAX757 or MAX761/MAX762 step-up switching regulators with on-board MOSFETs.

An evaluation kit is available:  MAX770EVKIT  

Key Features   Applications/Uses
  • 90% Efficiency for 10mA to 1A Load Currents
  • Up to 15W Output Power
  • 110µA Max Supply Current
  • 5µA Max Shutdown Current
  • 2V to 16.5V Input Range (MAX770/MAX771/MAX772)
  • Internal Shunt Regulator for High Input Voltages (MAX773)
  • Preset or Adjustable Output Voltages
    • MAX770: 5V or Adjustable
    • MAX771: 12V or Adjustable
    • MAX772: 15V or Adjustable
    • MAX773: 5V, 12V, 15V, or Adjustable
  • Current-Limited PFM Control Scheme
  • 300kHz Switching Frequency

 
  		• Battery-Powered Applications
  		• Flash Memory Programming
  		• High-Efficiency DC-DC Converters
  		• Palmtops, Handy Terminals
  		• Portable Communicators
  		• Positive LCD-Bias Generators

    Diagram
    MAX770, MAX771, MAX772, MAX773: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 113: Boost DC-DC Voltage Regulator Converts To Current Source for Battery Charging - MAX771
  		• Application Note 179: Step-Up/Step-Down Current Source Charges Batteries - MAX770
  		• Application Note 523: Quick-Charge IC Routes Step-Up Switcher Output To Battery - MAX770
  		• Application Note 544: Boost/Linear Regulator Derives 5V From Four Cells - MAX770
  		• Application Note 621: Simple Circuit Charges Lead-Acid Batteries - MAX773
  		• Application Note 998: 5V Step-Down Converter Has Transformer-Isolated Feedback - MAX770
  		• Application Note 1054: Simple Change Improves PFM Boost-Controller Efficiency - MAX770
  		• Application Note 1170: Circuit Connection Adds Current-Mode Operation To PFM Boost Converters - MAX770, MAX771, MAX772, MAX773

    Evaluation Kits
  		• MAX770EVKIT

    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: 1-53 of 53

    MAX770 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX770MJA    
    		NRND MAX1771
    		 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
    MAX770C/D    
    		NRND MAX1771
    		 DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX770CPA+  
    		NRND MAX1771
    		 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
    MAX770EPA+  
    		NRND MAX1771
    		 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
    MAX770CPA    
    		NRND MAX1771
    		 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
    MAX770EPA    
    		NRND MAX1771
    		 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
    MAX770CSA    
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX770CSA-T    
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX770CSA+  
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX770CSA+T    
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX770ESA    
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX770ESA-T    
    		NRND MAX1771

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX770ESA+  
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX770ESA+T    
    		NRND MAX1771
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX771 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX771MJA    
    		NRND MAX1605
    		 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
    MAX771C/D    
    		NRND MAX1605
    		 DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX771CPA+  
    		NRND MAX1605
    		 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
    MAX771EPA+  
    		NRND MAX1605
    		 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
    MAX771CPA    
    		NRND MAX1605
    		 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
    MAX771EPA    
    		NRND MAX1605
    		 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
    MAX771CSA    
    		NRND MAX1605
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX771CSA-T    
    		NRND MAX1605

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX771CSA+  
    		NRND MAX1605
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX771CSA+T    
    		NRND MAX1605

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX771ESA    
    		NRND MAX1605
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX771ESA-T    
    		NRND MAX1605

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX771ESA+  
    		NRND MAX1605
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX771ESA+T    
    		NRND MAX1605
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX772 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX772MJA    
    		NRND MAX668
    		 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
    MAX772C/D    
    		NRND MAX668
    		 DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX772CPA    
    		NRND MAX668
    		 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
    MAX772EPA    
    		NRND MAX668
    		 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
    MAX772CSA+T    
    		NRND MAX668
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX772CSA+  
    		NRND MAX668
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX772CSA    
    		NRND MAX668
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX772CSA-T    
    		NRND MAX668

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX772ESA    
    		NRND MAX668
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX772ESA-T    
    		NRND MAX668

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX772ESA+  
    		NRND MAX668
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX772ESA+T    
    		NRND MAX668
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX773 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX773MJD    
    		NRND MAX669
    		 CDIP(N);14 pin;162 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J14-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX773C/D    
    		NRND MAX669
    		 DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX773CPD+  
    		NRND MAX669
    		 PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX773CPD    
    		NRND MAX669
    		 PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX773EPD    
    		NRND MAX669
    		 PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX773CSD    
    		NRND MAX669
    		 SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX773CSD-T    
    		NRND MAX669

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX773CSD+  
    		NRND MAX669
    		 SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX773CSD+T    
    		NRND MAX669
    		 SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX773ESD    
    		NRND MAX669
    		 SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX773ESD-T    
    		NRND MAX669

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX773ESD+  
    		NRND MAX669
    		 SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX773ESD+T    
    		NRND MAX669

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    Related Products
    MAX608 5V or Adjustable, Low-Voltage, Step-Up DC-DC Controller

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     Description 
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     Diagram 

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    Document Ref.: 19-0202; Rev 2; 1996-11-01
    This page last modified: 2007-07-19


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