Linear Technology LT1738
The LT1738 can reduce high frequency harmonic power by as much as 40dB with only minor losses in efficiency. The LT1738 utilizes a current mode architecture optimized for single switch topologies such as boost, flyback and Cuk. The IC includes gate drive and all necessary oscillator, control and protection circuitry.FEATURES
s Greatly Reduced Conducted and Radiated EMI s Low Switching Harmonic Content s Independent Control of Output Switch Voltage and Current Slew Rates s Greatly Reduced Need for External Filters s Single N-Channel MOSFET Driver s 20kHz to 250kHz Oscillator Frequency s Easily Synchronized to External Clock s Regulates Positive and Negative Voltages s Easier Layout Than with Conventional Switchers U APPLICATIO S s Power Supplies for Noise Sensitive Communication Equipment s EMI Compliant Offline Power Supplies s Precision Instrumentation Systems s Isolated Supplies for Industrial Automation s Medical Instruments s Data Acquisition Systems DESCRIPTIO The LT®1738 is a switching regulator controller designed to lower conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by controlling the voltage and current slew rates of an external N-channel MOSFET switch. Current and voltage slew rates can be independently set to optimize harmonic content of the switching waveforms vs efficiency.