Description
The SC420 is a cost effective Dual MOSFET Driver, in corporating Semtech’s patented Combi-SenseTM technology, designed for switching High and Low side Power MOSFETs in Step-down Switching regulators. A 20ns max propagation delay from input transition to the gate of the power FET’s guarantees operation at high switching frequencies. Internal overlap protection circuit prevents shoot-through from Vin to GND in the main and synchronous MOSFETs.

Features
● High efficiency
● Shutdown mode for increased power saving
● Tri-state capability
● Fast rise and fall times (15ns typical with 3000pF load)
● 5V gate drive
● Ultra-low (<20ns) propagation delay (BG going low)
● Adaptive and programmable non-overlapping gate drives provide shoot-through protection
● Floating top drive switches up to 27V
● High frequency (to 1.5 MHz) operation allows use of small inductors and low cost ceramic capacitors
● Under-voltage lockout
● Low quiescent current
● MLP packaging provides superior thermal performance in a small footprint

Applications
● High efficiency portable and notebook computers
● Battery powered applications