• Hyper Speed Control™ architecture enables
• High delta V operation (VIN = 19V and VOUT = 0.8V)
• Small output capacitance
• Input voltage range: 4.5V to 19V
• Output current up to 9A, up to 95% efficiency
• Adjustable output voltage from 0.8V to 5.5V
• ±1% feedback accuracy
• Any Capacitor™ stable - zero-to-high ESR
• 600kHz switching frequency
• No external compensation
• Power Good (PG) output
• Foldback current-limit and "hiccup" mode short-circuit protection
• Supports safe start-up into pre-biased loads
• -40°C to +125°C junction temperature range
• Available in 28-pin 5mm — 6mm QFN package

The MIC24053 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24053 operates over an input supply range of 4.5V to 19V and provides a regulated output of up to 9A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz.

Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High V_IN)/(Low V_OUT) operation possible. This adaptive t_ON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.

The MIC24053 offers a full suite of 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" short-circuit protection, and thermal shutdown. An open-drain Power Good (PG) pin is provided. The 9A Hyper Light Load® part, MIC24054, is also available.