MPQ8636 High Efficiency, 4/10/20A, 18V Synchronous, Step-Down Converter The Future of Analog IC Technology Input FEATURES Part Number Package OVP Voltage Wide 4.5V-to-18V Operating Input Range Non- MPQ8636GLE-4 QFN(3x4mm) 4.5V to 18V Latch 4A/10A/20A Output Current MPQ8636GLE- Optimal Low R (ON) Internal Power DS QFN(3x4mm) 4.5V to 18V Latch-off 10 MOSFETs Per Device MPQ8636HGLE- Non- QFN(3x4mm) 4.5V to 18V Proprietary Switching-LossReduction 10 Latch Technique MPQ8636GVE- Non- QFN(5x4mm) 4.5V to 18V 20 Latch Adaptive COT for Ultrafast Transient Response 0.5% Reference Voltage Over 0C to 70C DESCRIPTION Junction Temperature Range The MPQ8636 is a fully-integrated, high- Programmable Soft-Start Time frequency, synchronous, rectified, step-down, Pre-Bias Start-Up switch-mode converter. It offers a very compact Programmable Switching Frequency from solution to achieve 4A/10A/20A output current 200kHz to 1MHz over a wide input supply range, with excellent Non-Latch OCP, OVP, and Thermal load and line regulation. The MPQ8636 operates Shutdown at high efficiency over a wide output-currentload Output Adjustable from 0.611V to 13V range. APPLICATIONS The MPQ8636 uses Constant-On-Time (COT) Telecom and Networking Systems control to provide a fast transient response and ease loop stabilization. Base Stations Servers An external resistor programs the operating Personal Video Recorders frequency from 200kHz to 1MHz, and the Flat-Panel Televisions and Monitors frequency keeps nearly constant as input Distributed Power Systems supply varies with the feed-forward compensation. All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. The default under-voltage lockout threshold is MPS and The Future of Analog IC Technology are Registered internally set at 4.1V, but a resistor network on Trademarks of Monolithic Power Systems, Inc. the enable pin can increase this threshold. The soft-start pin controls the output-voltage startup ramp. An open-drain power-good signal indicates that the output is within nominal voltage range. It has fully-integrated protection features that include over-current protection, over-voltage protection and thermal shutdown. The MPQ8636 requires a minimal number of readily-available standard external components and is available in a 16-Pin QFN 3mm4mm or a 29-Pin QFN 5mm4mm package. MPQ8636 Rev. 1.32 www.MonolithicPower.com 1 6/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. MPQ8636 4/10/20A, 18V, SYNCHRONOUS, STEP-DOWN CONVERTER TYPICAL APPLICATION V IN BST IN C3 L1 R C1 FREQ V SW OUT FREQ R4 C4 MPQ8636-10 R1 C2 EN ON/OFF MPQ8636H-10 FB VCC R2 C5 R3 SS C6 PG PGND AGND MPQ8636 Rev. 1.32 www.MonolithicPower.com 2 6/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved.