Datasheet Microchip MIC24056 — Datenblatt

MIC24056
12V, 12A High-Efficiency Buck Regulator
SuperSwitcher II General Description Features HyperLight Load efficiency – up to 80% at 10mA
The Micrel MIC24056 is a constant-frequency,
synchronous DC/DC buck regulator featuring adaptive on Hyper Speed Control architecture enables
time control architecture. The MIC24056 operates over a
-High delta V operation (VIN = 19V and VOUT = 0.8V)
supply range of 4.5V to 19V. It has an internal linear
-Small output capacitance
regulator which provides a regulated 5V to power the Input voltage range: 4.5V to 19V
internal control circuitry. MIC24056 operates at a constant
600kHz switching frequency in continuous-conduction Output current up to 12A
mode and can be used to provide up to 12A of output Up to 95% efficiency
current. The output voltage is adjustable down to 0.8V. Adjustable output voltage from 0.8V to 5.5V
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Micrel’s HyperLight Load architecture provides the same ±1% FB accuracy
high efficiency and ultra-fast transient response as the Any Capacitorв„ў stable -zero-to-high ESR
Hyper Speed ControlпЈЄ architecture under medium to 600kHz switching frequency
heavy loads, but also maintains high efficiency under light
load conditions by transitioning to variable frequency, Power good (PG) output
discontinuous mode operation. Foldback current-limit and “hiccup” mode short-circuit
The MIC24056 offers a full suite of protection features to
protection …