MP2322 1A, 3-22V, 5A I , Synchronous, Q Step-Down Converter in 1.5x2mm QFN DESCRIPTION FEATURES The MP2322 is a synchronous, rectified, step- Wide 3V to 22V Operating Input Range down, switch-mode converter with built-in 5A Low I Q internal power MOSFETs and high light-load 1A Load Current efficiency. The MP2322 offers a very compact 260m/120m R Internal Power DS(ON) solution that achieves 1A of continuous output MOSFETs current with excellent load and line regulation High Efficiency from 100A to 1A Load over a wide input supply range. during V from 4V to 22V IN Power-Save Mode (PSM) in Light-Load The MP2322 switching edge is optimized for Condition EMI reduction. Constant-on-time (COT) control 1.25MHz Fixed Switching Frequency during provides seamless mode transition and a fast CCM load transient response. T Extension to Support Large Duty Cycles ON Full protection features include over-current Power Good (PG) Indication protection (OCP), over-voltage protection EN Shutdown Output Discharge (OVP), and thermal shutdown. OCP and OVP and Hiccup The MP2322 requires a minimal number of Output Adjustable from 0.6V readily available, standard, external Available in a QFN-8 (1.5mmx2mm) components and is available in a space-saving Package QFN-8 (1.5mmx2mm) package. APPLICATIONS IOT Home Automation, Home Security Single- or Multi-Cell Li-Ion Battery Systems Multi-Cell Dry Battery Systems 12V Input Power Rails White Goods All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION Efficiency vs. Output Current VIN = 12V, VOUT = 3.3V, L = 3.3H, DCR = 3-22V 9m VIN IN BST C3 0.1F 100 C1 VOUT L1 22F 90 3.3H 3.3V/1A 80 SW EN 70 MP2322 3.3V C2 60 R3 F 22 50 100k R1 40 PG 976k FB 30 R2 Vin=4.5V VCC 20 C4 GND 220k Vin=12V 10 1F Vin=22V 0 0.0001 0.001 0.01 0.1 1 Load current(A) MP2322 Rev. 1.01 www.MonolithicPower.com 1 9/6/2019 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. Efficiency(%)MP2322 22V, 1A, LOW I , STEP-DOWN CONVERTER Q ORDERING INFORMATION Part Number* Package Top Marking MP2322GQH QFN-8 (1.5mmx2mm) See Below * For Tape & Reel, add suffix Z (e.g.: MP2322GQHZ). TOP MARKING FN: Product code of MP2322GQH LL: Lot number PACKAGE REFERENCE TOP VIEW GND 1 8 SW IN 2 7 BST 3 6 EN PG VCC 4 5 FB QFN-8 (1.5mmx2mm) MP2322 Rev. 1.01 www.MonolithicPower.com 2 9/6/2019 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.