1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Down (Buck) Regulators
  5. External Power Switch Buck Controllers
  6. MAX15026


Overview

Features and Benefits

  • 4.5V to 28V or 5V ±10% Input Supply Range
  • 0.6V to (0.85 x VIN) Adjustable Output
  • Adjustable 200kHz to 2MHz Switching Frequency
  • Ability to Start into a Prebiased Load
  • Lossless, Cycle-by-Cycle Valley Mode Current Limit with Adjustable, Temperature-Compensated Threshold
  • Sink-Mode Current-Limit Protection
  • Adaptive Internal Digital Soft-Start
  • ±1% Accurate Voltage Reference
  • Internal Boost Diode
  • Adaptive Synchronous Rectification Eliminates External Freewheeling Schottky Diode
  • Hiccup-Mode Short-Circuit Protection
  • Thermal Shutdown
  • Power-Good Output and Enable Input for Power Sequencing
  • ±5% Accurate Enable Input Threshold
  • AEC-Q100 Qualified (MAX15026B)

Product Details

The MAX15026 synchronous step-down controller operates from a 4.5V to 28V input voltage range and generates an adjustable output voltage from 85% of the input voltage down to 0.6V while supporting loads up to 25A. The device allows monotonic startup into a prebiased bus without discharging the output and features adaptive internal digital soft-start.

The MAX15026 offers the ability to adjust the switching frequency from 200kHz to 2MHz with an external resistor. The MAX15026's adaptive synchronous rectification eliminates the need for an external freewheeling Schottky diode. The device also utilizes the external low-side MOSFET's on-resistance as a current-sense element, eliminating the need for a current-sense resistor. This protects the DC-DC components from damage during output overloaded conditions or output short-circuit faults without requiring a current-sense resistor. Hiccup-mode current limit reduces power dissipation during short-circuit conditions. The MAX15026 includes a power-good output and an enable input with precise turn-on/turn-off threshold, which can be used for input supply monitoring and for power sequencing.

Additional protection features include sink-mode current limit and thermal shutdown.

Sink-mode current limit prevents reverse inductor current from reaching dangerous levels when the device is sinking current from the output.

The MAX15026 is available in a space-saving and thermally enhanced 3mm x 3mm, 14-pin TDFN-EP package. The MAX15026 operates over the extended -40°C to +85°C and automotive -40°C to +125°C temperature ranges.

The MAX15026C is designed to provide additional margin for break-before-make times.

The MAX15026B/MAX15026C provide a soft-stop feature to ramp down the output voltage at turn-off.

Mobile App

Applications

  • DSP Power Supplies
  • LCD TV Secondary Supplies
  • Points-of-Load Regulators
  • Power Modules
  • Set-Top Boxes
  • Switches/Routers

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.

Evaluation Kits (2)

Tools & Simulations

EE-Sim Power® Tools

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

EESim-Pdp-Spotlight

SIMPLIS Models

MAX15026 SIMPLIS Schematic

MAX15026 SIMPLIS Schematic

Product Recommendations

MAX15026 Companion Parts

Recommended Related Parts

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
MAX15026BETD+ Material Declaration Reliability Data Thin Dual Flatpack No Leads
MAX15026BETD+T Material Declaration Reliability Data Thin Dual Flatpack No Leads
MAX15026CATD+ Material Declaration Reliability Data Thin Dual Flatpack No Leads
MAX15026CATD+T Material Declaration Reliability Data Thin Dual Flatpack No Leads
MAX15026CETD+ Material Declaration Reliability Data Thin Dual Flatpack No Leads
MAX15026CETD+T Material Declaration Reliability Data Thin Dual Flatpack No Leads
Wafer Fabrication Data MAX15026 Reliability Data

Sample & Buy


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Evaluation Boards

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.