The MC34167, MC33167 series are high performance fixed frequency power Buck Boost Inverting Switching Regulators that contain the primary functions required for dc-dc converters. This series was specifically designed to be incorporated in step-down and voltage-inverting configurations with a minimum number of external components. 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.
●Features
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● 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 D2 PAK Package
● Moisture Sensitivity Level (MSL) Equals 1
● Pb-Free Packages are Available
