1 2 3 4 5 6 7 8 9 10 Buck Converter - High Current, Synchronous NCP3230 The NCP3230 is a high current, high efficiency, voltagefeed forward voltagemode synchronous buck converter which operates from 4.5 V to 18 V input and generates output voltages down to 0.6 V www.onsemi.com at up to 30 A load. Features MARKING Wide Input Voltage Range from 4.5 V to 18 V DIAGRAM 0.6 V Internal Reference Voltage 500 kHz Switching Frequency 1 External Programmable Softstart 1 40 NCP3230 AWLYYWWG Lossless Lowside FET Current Sensing QFN40 6x6, 0.5P CASE 485CM Output Overvoltage Protection and Undervoltage Protection System Overtemperature Protection using a Thermistor or Sensor NCP3230 = Specific Device Code Hiccup Mode Operation for All Faults A = Assembly Location WL = Wafer Lot Prebias Startup YY = Year Adjustable Output Voltage WW = Work Week Power Good Output G = PbFree Package Internal Overtemperature Protection This is a PbFree Device PIN CONNECTIONS Typical Applications Cellular Base Stations ASIC, FPGA, DSP and CPU Core and I/O Supplies VIN EN 11 40 Telecom and Network Equipment VIN VCC 12 39 VIN GND EP42 EP41 VIN 13 38 VB Server and Storage System VIN 14 37 PGND VSWH 15 36 BST PGND 16 35 VSW PGND 17 34 VSWH VSWH EP43 PGND 18 33 VSWH 19 32 PGND VSWH PGND 20 31 VSWH (TOP VIEW) ORDERING INFORMATION Device Package Shipping NCP3230MNTXG QFN40 2500 / (PbFree) Tape & Reel For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: May, 2021 Rev. 3 NCP3230/D PGND VIN 21 PGND VIN 22 VIN PGND 23 PGND PG 24 PGND 25 OTS AGND PGND 26 PGND 27 ISET PGND 28 COMP 29 FB VSWH 30 VSWH SSNCP3230 VB VCC VB VCC LDO VB VB BST VIN OSC COMP VDD Control Logic VREF + Ramp Generator E/A PWM Logic FB and VSWH UVLO VSW SS Soft Start OVP, UVP Power Good VCC OCP, TSD VB PVDD 2 A Protection EN Enable Logic 1.2 V POR PGND PG VB VREF + OTS AGND ISET Figure 1. NCP3230 Block Diagram www.onsemi.com 2