Datasheet Microchip MIC261203-ZYJL-TR — Ficha de datos

MIC261203
28V, 12A Hyper Light Loadв„ў
Synchronous DC/DC Buck Regulator
SuperSwitcher IIGв„ў General Description Features The Micrel MIC261203 is a constant-frequency,
synchronous DC/DC buck regulator featuring adaptive ontime control architecture. The MIC261203 operates over a
supply range of 4.5V to 28V. It has an internal linear
regulator which provides a regulated 5V to power the
internal control circuitry. MIC261203 operates at a
constant 600kHz switching frequency in continuousconduction mode and can be used to provide up to 12A of
output current. The output voltage is adjustable down to
0.8V. Hyper Light Load™ efficiency – up to 80% at 10mA
Hyper Speed Controlв„ў architecture enables
-High Delta V operation (VIN = 28V and VOUT = 0.8V)
-Small output capacitance
Input voltage range: 4.5V to 28V
Output current up to 12A
Up to 95% efficiency
Adjustable output voltage from 0.8V to 5.5V
В±1% FB accuracy
Any CapacitorTM stable -zero-to-high ESR
600kHz switching frequency
Power Good (PG) output
Foldback current-limit and “hiccup” mode short-circuit …