MC34167T TO-220-5

5.0 A, Step?Up/Down/Inverting Switching Regulators

0°C for MC34167 Thigh = + 70°C for MC34167

MC34167, MC33167
5.0 A, Step-Up/Down/
Inverting Switching
Regulators
The MC34167, 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 A.
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 A
• 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