MAXREFDES1032: 5A/12V Step-Down DC-DC Converter with Integrated HS Switch and External LS Switch Using the MAX17506


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The MAX17506 is a high-efficiency switching regulator that delivers up to 5A load current at output voltages from 0.9V to (0.9 x VIN). The device integrates the highside MOSFET and operates over 4.5V to 60V, making it ideal for on-board point-of load and post-regulation applications.

The device features a peak current-mode control architecture. Built-in compensation across the output voltage range eliminates the need for external compensation components. The feedback regulation accuracy over -40°C to +125°C is ±1.4%.

Output overload hiccup protection and cycle-by-cycle peak-current limit provide for ultra-safe operation in short-circuit conditions.

In this document a step-down DC-DC converter using the MAX17506 is demonstrated for a 12V output application. The power supply delivers up to 5A at 12V.


  • No Schottky-Synchronous Operation
  • Internal Compensation for Any Output Voltage
  • Built-In Soft-Start
  • 100kHz to 2.2MHz Adjustable Switching Frequency
  • 3.5μA Shutdown Current
  • Hiccup or Latchoff Mode Overload Protection
  • Programmable EN/UVLO Threshold
  • Overtemperature Protection


Designed, Built, Tested

Board pictured here has been fully assembled and tested. Not available for sale.



Input Type Vin(Min) Vin(Max) Iout(Max) Single/Multiple Output Vout(V) Pout(W) Isolated/Non-Isolated Topology
DC 24 36 5 - 12 60 Non-Isolated Synchronous Buck


Input Type DC
Vin(Min) 24
Vin(Max) 36
Iout(Max) 5
Single/Multiple Output -
Vout(V) 12
Pout(W) 60
Isolated/Non-Isolated Non-Isolated
Topology Synchronous Buck

Maxim Devices (1)

Part Number Name Product Family Order Design kits and evaluation modules
MAX17506 4.5V–60V, 5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Switching Regulator - Switching Regulators Buy Now Design Kits

Maxim Devices (1)

Part Number Product Family
Switching Regulator - Switching Regulators
4.5V–60V, 5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

Design Files (3)

Title Type Size Date
maxrefdes1032-bom PDF 206KB 2019-07-09
maxrefdes1032-pcb PDF 271KB 2019-07-09
maxrefdes1032-schematic PDF 214KB 2019-07-09
Date Type


(PDF, 206KB)



(PDF, 271KB)



(PDF, 214KB)

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