LT3959IFE#PBF

LINEAR TECHNOLOGY  LT3959IFE#PBF  直流/直流控制器, 电流模式, 1.6V至40V, 1路输出, 升压, 反相, SEPIC, 1MHz, TSSOP-38

The is a current-mode DC/DC Controller capable of regulating either positive or negative output voltages from a single feedback pin. It can be configured as a boost, SEPIC or inverting converter. It features an internal low side N-channel MOSFET rated for 6A at 40V and driven from an internal regulated supply provided from VIN or DRIVE. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3959 can be set over a 100kHz to 1MHz range with an external resistor, or can be synchronized to an external clock using the SYNC pin. It features soft-start and frequency fold back functions to limit inductor current during start-up and output short-circuit. A window comparator on the FBX pin reports via the PGOOD pin, providing output voltage status indication.

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Positive or negative output voltage programming with a single feedback pin

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PGOOD output voltage status report

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Internal 6A/40V power switch

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Programmable soft-start

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Synchronizable to an external clock

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<1µA Low shutdown current

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INTVCC Regulator supplied from VIN or DRIVE

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Programmable input under voltage lockout with hysteresis