MPQ8633A 16V, 12A, Synchronous Step-Down Converter with Adjustable Current Limit, Programmable Frequency, and Voltage Tracking The Future of Analog IC Technology Proprietary Switching Loss Reduction DESCRIPTION Technique The MPQ8633A is a fully integrated, high- Adaptive COT for Ultrafast Transient frequency, synchronous buck converter. It Response offers a very compact solution to achieve up to Stable with Zero ESR Output Capacitor 12A output current over a wide input supply 0.5% Reference Voltage over 0 C to range with excellent load and line regulation. +70 C Junction Temperature Range The MPQ8633A operates at high efficiency 1% Reference Voltage from -40C to over a wide output current load range. +125 C Junction Temperature Range The MPQ8633A adopts internally compensated Selectable Pulse Skip or Forced CCM constant-on-time (COT) control mode that Operation provides fast transient response and eases loop Excellent Load Regulation stabilization. Output Voltage Tracking Output Voltage Discharge The operating frequency is set easily to 600kHz, PGOOD Active Clamped Low Level during 800kHz, or 1000kHz with the MODE Power Failure configuration, allowing the MPQ8633A Programmable Soft-Start Time from 1ms frequency to remain constant regardless of the Pre-Bias Start-Up input/output voltages. Selectable Switching Frequency from The output voltage start-up ramp is controlled 600kHz, 800kHz, and 1000kHz by an internal 1ms timer. It can be increased by Non-Latch OCP, UVP, UVLO, Thermal adding a capacitor on TRK/REF. An open-drain Shutdown, and Latch-Off for OVP. power good(PGOOD) signal indicates the Output Adjustable from 0.6V to 90%*Vin, up output is within its nominal voltage range. The to 5.5V Max. PGOOD is clamped to around 0.7V with Available in a QFN 3mm x 4mm Package external pull-up voltage when the input supply fails to power the MPQ8633A. APPLICATIONS Fully integrated protection features include over- Telecom and Networking Systems current protection (OCP), over-voltage protection Server, Cloud-Computing, Storage (OVP), under-voltage protection (UVP), and over- Base Stations temperature protection (OTP). General Purpose Point-of-Load (PoL) The MPQ8633A requires a minimum number of 12V Distribution Power Systems readily available, standard, external components High-end TV and is available in a QFN 3mm x 4mm package. Game Consoles and Graphic Cards All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. FEATURES For MPS green status, please visit the MPS website under Quality Assurance. Wide Input Voltage Range from 2.7V: MPS and The Future of Analog IC Technology are registered trademarks of o 2.7V to 16V with External 3.3V VCC Monolithic Power Systems, Inc. Bias o 4 V to 16V with Internal Bias or External 3.3V VCC Bias Differential Output Voltage Remote Sense Programmable Accurate Current Limit Level 12A Output Current Low R ( ) Integrated Power MOSFETs DS ON MPQ8633A Rev.1.06 www.MonolithicPower.com 1 8/27/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. MPQ8633A- 16V, 12A, SYNCHRONOUS STEP-DOWN CONVERTER W/ADJUSTABLE CURRENT LIMIT, PROGRAMMABLE FREQUENCY, AND VOLTAGE TRACKING TYPICAL APPLICATION MPQ8633A Rev.1.06 www.MonolithicPower.com 2 8/27/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.