Datasheet Analog Devices LTC3406ES5-1.2#TRPBF — Datenblatt

LTC3406-1.2
1.5MHz, 600mA
Synchronous Step-Down
Regulator in ThinSOT U FEATURES
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■ DESCRIPTIO The LTC ®3406-1.2 is a high efficiency monolithic synchronous buck regulator using a constant frequency,
current mode architecture. Supply current during operation with only 20µA drops 1µF) supply bypass capacitors. The
discharged bypass capacitors are effectively put in parallel
with COUT, causing a rapid drop in VOUT. No regulator can
deliver enough current to prevent this problem if the load
switch resistance is low and it is driven quickly. The only
solution is to limit the rise time of the switch drive so that
the load rise time is limited to approximately (25 • CLOAD).
Thus, a 10µF capacitor charging to 3.3V would require a
250µs rise time, limiting the charging current to about …