FEATURES
s s s s s s s s s s 3.3V, 5.0V, 12V and Adjustable Output Versions Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% Max Over Line and Load Conditions Guaranteed 0.5 A Output Current Wide Input Voltage Range: 4.75 to 40V Requires Only 4 External Components 52kHz Fixed Frequency Internal Oscillator TTL Shutdown Capability, Low Power Standby Mode High Efficiency Uses Readily Available Standard Inductors Thermal Shutdown and Current Limit Protection GENERAL DESCRIPTION
All circuits of this series are capable of driving a 0.5A load with excellent line and load regulation. Standard series of inductors optimized for use with the TC2574 are offered by several different inductor manufacturers. Since the TC2574 converter is a switch–mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. In most cases, the power dissipated by the TC2574 regulator is so low, that the copper traces on the printed circuit board are normally the only heatsink needed and no additional heatsinking is required.
TelCom Semiconductor
