LTC3704IMS#PBF

LINEAR TECHNOLOGY  LTC3704IMS#PBF  直流/直流控制器, 正极至负极, 2.5V至36V, 1路输出, 降压, 升压, 1MHz, MSOP-10

The is a current-mode positive-to-negative DC/DC Controller that drives an N-channel power MOSFET and requires very few external components. Intended for low to high power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET"s on-resistance, thereby maximizing efficiency. 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. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10µA make the LTC3704 ideally suited for battery-operated systems. For applications requiring constant frequency operation, the Burst Mode operation feature can be defeated using the MODE/SYNC pin. Higher than 36V switch voltage applications are possible with the LTC3704 by connecting the SENSE pin to a resistor in the source of the power MOSFET.

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High efficiency operation no sense resistor required

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Current mode control provides excellent transient response

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±1% Internal voltage reference

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±2% RUN pin threshold with 100mV hysteresis

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User-controlled pulse skip or burst mode operation

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Internal 5.2V Low dropout voltage regulator

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Capable of operating with a sense resistor for high output voltage applications VDS >36V