MONOLITHIC POWER SYSTEMS (MPS) MPQ8633B-HGLE-P DC-DC Switching Synchronous Buck Regulator, Adjustable, 4 to 16V in, 0.6 to 5.5V/20A Out, QFN-21

MPQ8633B-H is a fully integrated, high frequency, synchronous step-down converter. It offers a compact solution that can achieve up to 20A of output current (IOUT) across a wide input voltage (VIN) range, with excellent load and line regulation. The MPQ8633B-H operates at high efficiency across the entire IOUT load range. Internally compensated constant-on-time (COT) control provides fast transient response and eases loop stabilization. The adjustable switching frequency (fSW) can be set to 600KHz, 800KHz, or 1000KHz by configuring the MODE pin. This maintains a constant fSW, regardless of the output voltage (VOUT) or VIN. The VOUT start-up ramp is controlled via an internal timer (1ms). For a longer internal timer, add a capacitor to the TRK/REF pin. Applications include telecommunication/networking systems, servers, cloud-computing, and storage, base stations, general-purpose POL systems, 12V distribution power systems, high-end televisions, game consoles and graphic cards.

• Wide input voltage (VIN) range, 2.7V to 16V VIN range with external 3.3V VCC bias
• Differential VOUT remote sense, configurable accurate current limit, 20A output current (IOUT)
• Low RDS(ON) integrated power MOSFETs, proprietary switching loss reduction technique
• Adaptive constant-on-time (COT) control for fast transient response
• Stable with zero ESR output capacitor, 0.5% VREF for 0°C to 70°C TJ range
• Selectable pulse skip mode (PSM)/forced continuous conduction mode (FCCM), excellent load regulation
• VOUT tracking, PGOOD active clamped low during power failure
• Configurable soft-start time (tSS) from 1ms, pre-bias start-up
• 600kHz, 800kHz, or 1000kHz selectable fSW, non-latch OCP, OVP, UVP, UVLO, and thermal shutdown
• QFN-21 package

MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.