Datasheet Microchip MIC27600 — Datenblatt

MIC27600
36V, 7A Hyper Speed Controlв„ў
Synchronous DC-DC Buck Regulator
SuperSwitcher IIв„ў General Description Features The Micrel MIC27600 is a constant-frequency, synchronous
buck regulator featuring a unique digitally-modified adaptive
on-time control architecture. The MIC27600 operates over an
input supply range of 4.5V to 36V and provides a regulated
output of up to 7A of output current. The output voltage is
adjustable down to 0.8V with a guaranteed accuracy of В±1%,
and the device operates at a switching frequency of 300kHz. Micrel’s Hyper Speed Control™ architecture allows for ultrafast transient response while reducing the output capacitance
and also makes (High VIN)/(Low VOUT) operation possible.
This digitally modified adaptive tON ripple control architecture
combines the advantages of fixed-frequency operation and
fast transient response in a single device.
The MIC27600 offers a full suite of protection features to
ensure protection of the IC during fault conditions. These
include undervoltage lockout to ensure proper operation
under power-sag conditions, internal soft-start to reduce
inrush current, foldback current limit, “hiccup” mode shortcircuit protection and thermal shutdown.
All support documentation can be found on Micrel’s web
site at: www.micrel.com. Hyper Speed Controlв„ў architecture enables
-High Delta V operation (VIN = 36V and VOUT = 0.8V)
-Small output capacitance …