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IC manufacturers MaxLinear

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MaxLinear SP7653

Wide Input Voltage Range,1.3MHz, Buck Regulator


TopologyBuck Converter
Input voltage12 V
Switching frequency1100-1500 kHz
Output 13.3 V / 3 A


The SP7653 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to beespecially attractive for dual supply, 12V to 20V distributed power systems stepped down with 5V used to power thecontroller. This lower VCC voltage minimizes power dissipation in the part and is used to drive the top switch. The SP7653is designed to provide a fully integrated buck regulator solution using a fixed 1.3MHz frequency, PWM voltage modearchitecture. Protection features include Under Voltage Lock Out (UVLO), thermal shutdown and output short circuitprotection. The SP7653 is available in the space saving DFN package.


  • -2.5V to 20V Step Down Achieved Using Dual Input
  • -Output Voltage down to 0.8V
  • -3A Output Capability
  • -Built in Low RDSON Power Switches (40 mΩ typical)
  • -Highly Integrated Design, Minimal Components
  • -1.3MHz Fixed Frequency Operation
  • -UVLO Detects Both VCC and VIN
  • -Over Temperature Protection
  • -Short Circuit Protection with Auto-Restart
  • -Wide BW Amp Allows Type II or III Compensation
  • -Programmable Soft Start
  • -Fast Transient Response
  • -High Efficiency: Greater than 95% Possible
  • -Nonsynchronous Start-Up into a Pre-Charged Output
  • -Small 7mm x 4mm DFN Package

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