LTC1871IMS-1#PBF

LINEAR TECHNOLOGY  LTC1871IMS-1#PBF  升压控制器, 36V-2.5V电源, 1 MHz, MSOP-10

The is a current-mode boost Flyback/SEPIC Controller drives an N-channel power MOSFET and requires very few external components. It eliminates the need for a current sense resistor by utilizing the power MOSFET"s on-resistance, thereby maximizing efficiency. Higher output voltage applications are possible with the LTC1871-1 by connecting the SENSE pin to a resistor in the source of the power MOSFET. The IC"s operating frequency can be set with an external resistor over a 50kHz to 1MHz range and can be synchronized to an external clock using the MODE/SYNC pin. It has a lower pulse skip threshold, making it ideal for applications requiring constant frequency operation at light loads. The lower pulse skip threshold also helps maintain constant frequency operation in applications with a wide input voltage range.

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Wide input range

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Current mode control provides excellent transient response

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±2% RUN pin threshold with 100mV hysteresis

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±1% Internal voltage reference

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Ultralow pulse skip threshold for wide input range applications

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User-controlled pulse skip or burst mode operation

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Output overvoltage protection

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Capable of operating with a sense resistor for high output voltage applications