Datasheet Microchip MIC28304 — Ficha de datos

MIC28304
70V 3A Power Module
Hyper Speed Controlв„ў Family General Description
Micrel’s MIC28304 is synchronous step-down regulator
module, featuring a unique adaptive ON-time control
architecture. The module incorporates a DC/DC controller,
power MOSFETs, bootstrap diode, bootstrap capacitor
and an inductor in a single package. The MIC28304
operates over an input supply range from 4.5V to 70V and
can be used to supply up to 3A of output current. The
output voltage is adjustable down to 0.8V with a
guaranteed accuracy of В±1%. The device operates with
programmable switching frequency from 200kHz to
600kHz.
® Micrel’s HyperLight Load architecture provides the same
high-efficiency and ultra-fast transient response as the
Hyper Speed Controlв„ў architecture under the medium to
heavy loads, but also maintains high efficiency under light
load conditions by transitioning to variable frequency,
discontinuous-mode operation.
The MIC28304 offers a full suite of protection features.
These include undervoltage lockout, internal soft-start,
foldback current limit, “hiccup” mode short-circuit …