The LT8612EUDE#PBF is a 42V 6A high speed synchronous monolithic Step-down Regulator that consumes only 3μA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode? operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN under-voltage lockout or to shut down the LT8610 reducing the input supply current to 1μA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions.
Ultralow quiescent current Burst Mode? operation (3μA IQ regulating 12VIN to 3.3VOUT)
<10mVP-P Output ripple
High efficiency synchronous operation
95% Efficiency at 3A, 5VOUT from 12VIN
94% Efficiency at 3A, 3.3VOUT from 12VIN
Fast minimum switch-on time (40ns)
Low dropout under all conditions (250mV at 3A)
Allows use of small inductors
Safely tolerates inductor saturation in overload conditions
(EN)
