1. Products
  2. Power Management
  3. Inductorless (Charge Pump) DC/DC Converters
  4. Regulated Inverting Charge Pumps
  5. MAX889


Features and Benefits

  • 200mA Output Current
  • Up to 2MHz Switching Frequency
  • Small Capacitors (1µF)
  • +2.7V to +5.5V Input Voltage Range
  • Adjustable Regulated Negative Output (-2.5V to -VIN)
  • 0.1µA Logic-Controlled Shutdown
  • Low 0.05Ω Output Resistance (in regulation)
  • Soft-Start and Foldback Current Limited
  • Short-Circuit and Thermal Shutdown Protected
  • 8-Pin SO Package

Product Details

The MAX889 inverting charge pump delivers a regulated negative output voltage at loads of up to 200mA. The device operates with inputs from 2.7V to 5.5V to produce an adjustable, regulated output from -2.5V to -VIN.

The MAX889 is available with an operating frequency of 2MHz (T version), 1MHz (S version), or 0.5MHz (R version). The higher switching frequency devices allow the use of smaller capacitors for space-limited applications. The lower frequency devices have lower quiescent current.

The MAX889 also features a 0.1µA logic-controlled shutdown mode and is available in an 8-pin SO package. An evaluation kit, MAX889SEVKIT, is available.


  • Battery-Powered Applications
  • Camcorders
  • Digital Still Cameras
  • Hard Disk Drive
  • Measurement Instrumentation
  • TFT Panels

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
MAX889RESA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX889RESA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX889SESA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX889SESA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX889TESA+ Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
MAX889TESA+T Material Declaration Reliability Data Small-Outline IC, Narrow (0.15in)
Wafer Fabrication Data MAX889 Reliability Data

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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

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