器件名称: TC2574-VOE
功能描述: 0.5A Step-Down Switching Regulator
文件大小: 219.24KB 共25页
简 介:0.5A Step-Down Switching Regulator
TC2574 TC2574
0.5A Step-Down Switching Regulator
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
The TC2574 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regulator (buck converter). All circuits of this series are capable of driving a 0.5A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design. 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 b……
