MPQ8633BGLE-Z Power IC Chip Switching Regulator IC Positive Adjustable 0.6V

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Description:

The MPQ8633B is a fully integrated, highfrequency, synchronous, buck converter. It offers a very compact solution that achieves up to 20A of output current with excellent load and line regulation over a wide input supply range.

The MPQ8633B operates at high efficiency over a wide output current load range. The MPQ8633B adopts an internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.

The operating frequency can be set to 600kHz, 800kHz, or 1000kHz easily with MODE configuration, allowing the MPQ8633B frequency to remain constant regardless of the input and output voltages.

The output voltage start-up ramp is controlled by an internal 1ms timer. It can be increased by adding a capacitor on TRK/REF. An open-drain power good (PGOOD) signal indicates if the output is within its nominal voltage range. PGOOD is clamped at around 0.7V with an external pull-up voltage when the input supply fails to power the MPQ8633B.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MPQ8633B requires a minimal number of readily available, standard, external components and is available in a QFN-21 (3mmx4mm) package.

FEATURES

 Wide Input Voltage Range o 2.7V to 16V with External 3.3V VCC Bias o 4V to 16V with Internal Bias or External 3.3V VCC Bias

 Differential Output Voltage Remote Sense

 Programmable Accurate Current Limit Level

 20A Output Current

 Low RDS(ON) Integrated Power MOSFETs

 Proprietary Switching Loss Reduction Technique

 Adaptive COT for Ultrafast Transient Response

 Stable with Zero ESR Output Capacitor

 0.5% Reference Voltage over 0°C to +70°C Junction Temperature Range

 1% Reference Voltage from -40°C to +125°C Junction Temperature Range

 Selectable Pulse Skip or Forced CCM Operation

 Excellent Load Regulation

 Output Voltage Tracking

 Output Voltage Discharge

 PGOOD Active Clamped at Low Level during Power Failure

 Programmable Soft-Start Time from 1ms

 Pre-Bias Start-Up

 Selectable Switching Frequency from 600kHz, 800kHz, and 1000kHz

 Non-Latch OCP, UVP, UVLO, Thermal Shutdown, and Latch-Off for OVP

 Output Adjustable from 0.6V to 90%*VIN, up to 5.5V Max

 Available in a QFN-21 (3mmx4mm) Package

APPLICATIONS

 Telecom and Networking Systems

 Servers, Cloud-Computing, Storage

 Base Stations

 General Purpose Point-of-Load (PoL)

 12V Distribution Power Systems

 High-end TV

 Game Consoles and Graphic Cards

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