LTC3872ETS8#PBF

LINEAR TECHNOLOGY  LTC3872ETS8#PBF  直流/直流控制器, 电流模式, 2.75V至9.8V, 1路输出, 升压, 650kHz, TSOT-23-8

The is a No RSENSE™ current mode boost DC/DC Controller drives an N-channel power MOSFET and requires very few external components. The No RSENSE™ architecture eliminates the need for a sense resistor, improves efficiency and saves board space. The LTC3872 provides excellent AC and DC load and line regulation with ±1.5% output voltage accuracy. It incorporates an under-voltage lockout feature that shuts down the device when the input voltage falls below 2.3V. High switching frequency of 550kHz allows the use of a small inductor. The LTC3872 can be used either by sensing the voltage drop across the power MOSFET or by connecting the SW pin to a conventional sensing resistor in the source of the power MOSFET.

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No current sense resistor required

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VOUT up to 60V

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Constant frequency 550kHz operation

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Internal soft-start and optional external soft-start

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Adjustable current limit

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Pulse skipping at light load

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±1.5% Voltage reference accuracy

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Current mode operation for excellent line and load transient response