MPQ8612 High Efficiency, 12A/16A/20A, 6V Synchronous Step-down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MPQ8612 is fully integrated high frequency Wide 3V to 6V Operating Input Range synchronous rectified step-down switch mode 12A/16A/20A Output Current converter. It offers very compact solutions to Low R (ON) Internal Power MOSFETs DS achieve 12A/16A/20A output current from a 3V to Proprietary Switching Loss Reduction 6V input with excellent load and line regulation. Technique Adaptive COT for Ultrafast Transient Constant-On-Time (COT) control mode Response provides fast transient response and eases loop 1% Reference Voltage Over -20 C to stabilization. The MPQ8612 can operate with a +85 C Junction Temperature Range low-cost electrolytic capacitor and can support ceramic output capacitor with external slope Programmable Soft Start Time compensation. Pre-Bias Start up Programmable Switching Frequency from Operating frequency is programmed by an 300kHz to 1MHz. external resistor and is compensated for Minimum On Time T =60ns ON MIN variations in V . IN Minimum Off Time T =75ns OFF MIN Under voltage lockout is internally set at 2.8 V, Non-latch OCP, non-latch OVP Protection but can be increased by programming the and Thermal Shutdown threshold with a resistor network on the enable Output Adjustable from 0.608V to 4.5V pin. The output voltage startup ramp is controlled by the soft start pin. A power good APPLICATIONS signal indicates the output is within its nominal Telecom System Base Stations voltage range. Networking Systems Full fault protection including OCP, SCP, OVP Server UVP and OTP is provided by internal Personal Video Recorders comparators. Flat Panel Television and Monitors Distributed Power Systems The MPQ8612 requires a minimum number of readily available standard external components All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. and are available in QFN3X4/4X4/4X4 packages. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION VIN BST IN C3 L1 C1 RFREQ VOUT SW FREQ R4 C4 R1 C2 ON/OFF EN MPQ8612 FB VCC VCC SS C5 R3 R2 C6 PG PGND AGND MPQ8612 Rev. 1.11 www.MonolithicPower.com 1 10/22/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. SW SW SW SW SW SW SW SW MPQ8612 12A/16A/20A, 6V, SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP8612 MPQ8612GL-12 QFN (3x4mm) 12 MP8612 MPQ8612GR-16 QFN (4x4mm) 16 MP8612 MPQ8612GR-20 QFN (4x4mm) 20 * For Tape & Reel, add suffix Z (e.g. MPQ8612GLZ) PACKAGE REFERENCE TOP VIEW FREQ IN IN 12 11 10 1 AGND FB 2 SS 3 13 14 EN 4 5 VCC PG 6 78 9 BST GND GND EXPOSED PAD ON BACKSIDE Part Number*** Package MPQ8612GL-12 QFN14 (3x4mm) ***For Tape & Reel, add suffix Z (eg. MPQ8612GL12Z) TOP VIEW TOP VIEW FREQ IN IN IN FREQ IN IN IN 14 13 12 11 14 13 12 11 1 AGND 1 AGND FB 2 FB 2 3 SS 15 16 17 3 SS 15 16 17 4 EN 4 EN VCC 5 5 VCC PG 6 PG 6 78 9 10 78 9 10 BST GND GND GND BST GND GND GND EXPOSED PAD EXPOSED PAD ON BACKSIDE ON BACKSIDE Part Number**** Package Part Number***** Package MPQ8612GR-16 QFN17 (4x4mm) MPQ8612GR-20 QFN17 (4x4mm) ****For Tape & Reel, add suffix Z (eg. MPQ8612GR-16Z) *****For Tape & Reel, add suffix Z (eg. MPQ8612GR-20Z) MPQ8612 Rev. 1.11 www.MonolithicPower.com 2 10/22/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved.