1. Products
  2. Power Management
  3. Switching Regulators
  4. Inverting Regulators
  5. MAX637


Features and Benefits

  • Preset -5V, -12V, -15V Output Voltages
  • Adjustable Output with 2 Resistors
  • 85% Typ Efficiency
  • Only 3 External Components
  • 80µA Typ Operating Current
  • Low Battery Detector

Product Details

The MAX635/MAX636/MAX637 inverting switching regulators are designed for minimum component DC-DC conversion in the 5mW to 500mW range.

Low power applications require only a diode, output filter capacitor, and a low-cost inductor. An additional MOSFET and driver are needed for higher power applications. Low battery detection circuitry is included on chip.

The MAX635/MAX636/MAX637 are preset for -5V, -12V, -15V outputs, respectively. However, the regulators can be set to other levels by adding 2 resistors.

Maxim manufactures a broad line of step-up, step-down, and inverting DC-DC converters, with features such as logic-level shutdown, adjustable oscillator freuqency, and external MOSFET drive.


  • Battery Power Conversion
  • Board Level DC-DC Conversion
  • Minimum Component, High -Efficiency DC-DC Converters
  • Portable Instruments

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX637ACPA+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
MAX637ACSA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX637ACSA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX637AEPA+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
MAX637AESA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX637AESA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX637AMJA Material Declaration Reliability Data Ceramic Dual-In-Line, Narrow (0.3in)
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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