LT1956 - High Voltage, 1.5A, 500kHz Step-Down Switching RegulatorsThe LT1956 LT1956-5 are 500kHz monolithic buck Switching Regulators with an input voltage capability up to 60V. A high efficiency 1.5A, 0.2 Ohm Switch is included on the die along with all the necessary Oscillator control and Logic circuitry. A current mode architecture provides fast transient response and good loop stability.
Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power Switch Patented circuitry maintains peak Switch current over the full duty cycle range*. A shutdown pin reduces supply current to 25A and the device CAN be externally synchronized from 580kHz to 700kHz with a Logic level input. The LT1956 LT1956-5 are available in fused-lead 16-pin SSOP and thermally enhanced TSSOP packages. By Linear Technology Corporation |
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