LT8609SEV#PBF

The LT®8609S is a compact, high efficiency, high speed
synchronous monolithic step-down switching regulator
that consumes only 1.7µA of non-switching quiescent
current. The LT8609S can deliver 2A of continuous current with peak loads of 3A (<1sec) to support applications
such as GSM transceivers which require high transient
loads. 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, or spread
spectrum modulation of switching frequencies for low
EMI operation. 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 undervoltage lockout or to shut down
the LT8609S reducing the input supply current to 1µA. A
capacitor on the TR/SS pin programs the output voltage
ramp rate during start-up while the PG flag signals when
VOUT is within ±8.5% of the programmed output voltage
as well as fault conditions. The LT8609S is available in a APPLICATIONS small 16-lead 3mm × 3mm LQFN package.