MC34063 5V Buck Converter SMD

MC34063 5V Buck Converter SMD board

The MC34063 Series is a monolithic control circuit containing the primary functions required for DC-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver, and high current output switch.

This series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components.

Schematic MC34063 5V Buck Converter

Schematic Mc34063 5V Buck Converter Smd

Features MC34063 5V Buck Converter

  • Operation from 3.0 V to 40 V Input
  • Low Standby Current
  • Current Limiting
  • Output Switch Current to 1.5 A
  • Output Voltage Adjustable
  • Frequency Operation to 100 kHz
  • Precision 2% Reference
  •  NCV Prefix for Automotive and Other Applications Requiring

Bom MC34063 5V Buck Converter

Name Designator Footprint Quantity
MC34063 U4 SOP-8 – Inverting Regulator – Buck,
Boost, Switching
SS14 D1 SMA(DO-214AC) – Schottky Diode 1
R270 (271) R8 2512 1
6k2 (622) R9 0603 1
2k (202) R10 0603 1
100p C7 0603 – Ceramic capacitor 1
470u C8 Electrolytic capacitor – 8.0×10.5 1
100u C9 1206 – Ceramic capacitor 1
TERMINAL_BLOCK 1×2-2.54 U2,U1 Terminal block 1×2-2.54 2
100uH L1 Inductor SMD – 10.0×10.2 mm 1


Download files, PCB in PDF, Gerber, PNG, and SVG



References, Links, and Notes


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About the author blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.

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