LT3757HMSE#PBF

LINEAR TECHNOLOGY  LT3757HMSE#PBF  直流/直流控制器, 2.9V至40V, 1路输出, 升压, 反激, 反相, SEPIC, 1MHz, MSOP-10

The is a current-mode DC/DC Controller which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. It drives a low side external N-channel power MOSFET from an internal regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of the controller can be set with an external resistor over a 100kHz to 1MHz range and can be synchronized to an external clock using the SYNC pin. A low minimum operating supply voltage of 2.9V and a low shutdown quiescent current of less than 1µA, makes the controller ideal. It features soft-start and frequency fold back functions to limit inductor current during start-up and output short-circuit.

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Positive or negative output voltage programming with a single feedback pin

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Current mode control provides excellent transient response

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Synchronizable to an external clock

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<1µA Low shutdown current

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Internal 7.2V Low dropout voltage regulator

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Programmable input undervoltage lockout with hysteresis

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Programmable soft-start