The MIC24052 is a constant-frequency, synchronous DC/DC buck regulator featuring adaptive on-time control architecture. The MIC24052 operates over a supply range of 4.5V to 19V. It has an internal linear regulator which provides a regulated 5V to power the internal control circuitry. The MIC24052 operates at a constant 600kHz switching frequency in continuous-conduction mode and can be used to provide up to 6A of output current. The output voltage is adjustable down to 0.8V.

HyperLight Load® architecture provides the same high-efficiency and ultra-fast transient response as the Hyper Speed Control™ architecture under medium to heavy loads, but also maintains high efficiency under light load conditions by transitioning to variable-frequency, discontinuous-mode operation.

The MIC24052 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under voltage lockout to ensure proper operation under power-sag conditions, thermal shutdown, internal soft-start to reduce the inrush current, foldback current limit and "hiccup mode" short-circuit protection. The MIC24052 includes a power good (PG) output to allow simple sequencing.

Also see the 6A Hyper Speed Control™ part, MIC24051.

• HyperLight Load® efficiency &em; up to 80% at 10mA
• Hyper Speed Control™ architecture enables
• High delta V operation (V_IN = 19V and V_OUT = 0.8V)
• Small output capacitance
• 4.5V to 19V input voltage
• Adjustable output from 0.8V to 5.5V (±1% accuracy)
• Any Capacitor™ stable &em; Zero-to-high ESR
• 600kHz switching frequency
• Power Good (PG) output
• Foldback current limit and "hiccup" mode short-circuit protection
• Supports safe start-up into a pre-biased load
• -40°C to +125°C junction temperature range
• Available in 28-pin 5mm X 6mm QFN package