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Manufacturer Part #


MC33167 5 A 72 kHz Step-Up / Down / Inverting Switching Regulator - TO-220-5

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 2041
Product Specification Section
Technical Attributes
Attributes Table
Topology: Buck/Boost/Inverting
Input Voltage: 7.5V to 40V
Output Current-Max: 100mA
Output Type: Adjustable
Switching Frequency-Max: 79kHz
Operating Temp Range: -40°C to +85°C
Duty Cycle-Max: 100%
Efficiency: 87.8%
No. of Outputs: 1
Storage Temperature Range: -65°C to +150°C
Load Regulation: 30mV
Load Regulation (%): 0.053%
Moisture Sensitivity Level: 1
Package Style:  TO-220-5
Mounting Method: Through Hole
Features & Applications

The MC33167 series are high performance fixed frequency power switching regulators that contain the primary functions required for dc−to−dc converters. This series was specifically designed to be incorporated in step−down and voltage−inverting configurations with a minimum number of external components and can also be used cost effectively in step−up applications.

These devices consist of an internal temperature compensated reference, fixed frequency oscillator with on−chip timing components, latching pulse width modulator for single pulse metering, high gain error amplifier, and a high current output switch. Protective features consist of cycle−by−cycle current limiting, undervoltage lockout, and thermal shutdown. Also included is a low power standby mode that reduces power supply current to 36 µA.

Key Features:

  • Output Switch Current in Excess of 5.0 A
  • Fixed Frequency Oscillator (72 kHz) with On−Chip Timing
  • Provides 5.05 V Output without External Resistor Divider
  • Precision 2% Reference
  • 0% to 95% Output Duty Cycle
  • Cycle−by−Cycle Current Limiting
  • Undervoltage Lockout with Hysteresis
  • Internal Thermal Shutdown
  • Operation from 7.5 V to 40 V
  • Standby Mode Reduces Power Supply Current to 36 µA
  • Economical 5−Lead TO−220 Package with Two Optional Leadforms
  • Also Available in Surface Mount D2PAK Package
  • Moisture Sensitivity Level (MSL) Equals 1
  • Pb−Free Packages are Available


  • Digital TV (LCD, PDP)
  • Efficient system pre-regulator for linear voltage regulators
  • Battery chargers

Learn more about the MC3316x family of Switching Regulators

Pricing Section
Global Stock:
Germany (Online Only):
Factory Stock:Factory Stock:
Factory Lead Time:
10 Weeks
Minimum Order:
Multiple Of:
Web Price
Product Variant Information section