LT3742EUF#PBF

LINEAR TECHNOLOGY  LT3742EUF#PBF  直流/直流控制器, 2相, 4V至30V, 2路输出, 降压, 560kHz, QFN-24

The is a dual step-down DC/DC Switching Regulator Controller that drives high side N-channel power MOSFETs. A 500kHz fixed frequency current-mode architecture provides fast transient response with simple loop compensation components and cycle-by-cycle current limiting. The output stages of the two controllers operate 180° out of phase to reduce the input ripple current, minimizing the noise induced on the input supply and allowing less input capacitance. An internal boost regulator generates a bias rail of VIN 7V to provide gate drive for the N-channel MOSFETs allowing low dropout and 100% duty cycle operation. The LT3742 can be used for applications where both controllers need to operate independently, or where both controllers are used to provide a single higher current output.

.

Out-of-phase controllers reduce required input capacitance and power supply induced noise

.

Internal boost converter provides bias rail for N-channel MOSFET gate drive

.

Power good voltage monitor for each output

.

Programmable soft-start