MIC24054
12V, 9A High-Efficiency Buck Regulator
SuperSwitcher II General Description Features Hyper Light Load efficiency – up to 80% at 10mA
The Micrel MIC24054 is a constant-frequency,
synchronous DC/DC buck regulator featuring adaptive on Hyper Speed Control architecture enables
time control architecture. The MIC24054 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. The MIC24054 operates at a
constant 600kHz switching frequency in continuous Output current up to 9A
conduction mode and can be used to provide up to 9A of Up to 95% efficiency
output current. The output voltage is adjustable down to Adjustable output voltage from 0.8V to 5.5V
0.8V. В±1% FB accuracy
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Micrel’s Hyper Light Load architecture provides the same Any Capacitor stable -zero-to-high ESR
high-efficiency and ultra-fast transient response as the 600kHz switching frequency
Hyper Speed ControlпЈЄ architecture under medium to heavy
loads, but also maintains high efficiency under light load Power good (PG) output
conditions by transitioning to variable frequency, Foldback current-limit and “hiccup” mode short-circuit
discontinuous mode operation.
protection …