DATASHEET ISL8118 FN6325 Rev 3.00 3.3V to 20V, Single-Phase PWM Controller with Integrated 2A/4A MOSFET August 12, 2014 Drivers The ISL8118 is a single-phase PWM controller featuring an Features input voltage range of +3.3V to +20V and integrated MOSFET Wide Input Voltage Range: +3.3V to +20V drivers. Utilizing voltage-mode operation with input voltage High-Speed 2A/4A MOSFET Gate Drivers that Operate feed-forward compensation, the ISL8118 maintains a constant from 2.9V to 5.6V loop gain, providing optimal transient response for applications with a wide input operating voltage range. Operating Junction Temperature Range 40C to +125C External Reference Input The output voltage can be precisely regulated down to 0.591V with a system tolerance of 1.0% over the industrial Input Voltage Feed-forward Compensation temperature range and line and load variations. A external Internal Linear Regulator reference input is provided to bypass the internal reference for External Linear Regulator Drive Available voltage tracking or DDR memory applications. The compact 28 Ld 5x5 QFN package, integrated linear regulator as well as High System Accuracy: the external linear regulator drive option, integrated differential - 0.68% Over the Range of 0C to +70C remote sense amplifier and integrated voltage margining with - 1.00% Over the Range of -40C to +85C adjustable upper and lower settings decrease external Programmable Operating Frequency from 250kHz to 2MHz component count and reduce board space requirements. Programmable Soft-Start with Pre-biased Load Capability Programmable soft-start with pre-biased load capability, Integrated Unity-Gain Differential Remote Sense Amplifier adjustable operating frequency from 250kHz to 2MHz, sourcing and sinking overcurrent protection, overvoltage and Enable Input with Voltage Monitoring Capability undervoltage protection, and power-good indication with Integrated Voltage Margining with Independent Upper and programmable delay combine to make the ISL8118 a superior Lower Settings choice for many power supply systems. Overvoltage and Undervoltage Protection Pinout Low-Side and High-Side MOSFET Current Sensing ISL8118 Overcurrent Protection for Sourcing and Sinking Currents (28 LD 5x5 QFN) Power-Good Indicator with Programmable Delay TOP VIEW Compact 28 Ld 5x5 QFN Package Pb-Free (RoHS Compliant) 28 27 26 25 24 23 22 Applications VSENSP 1 21 BOOT Telecom and Datacom Servers VSENSN 2 20 TGATE Point of Load Modules REFOUT 3 19 LX Routers and Switchers GND High Current Distributed Power Supplies REFIN PGND 4 18 BOTTOM SIDE PAD Ordering Information SS 5 17 BGATE PART PVCC OFSP 6 16 NUMBER PART TEMP. PACKAGE PKG. (Note) MARKING RANGE (C) (Pb-Free) DWG. EXDRV OFSN 7 15 ISL8118CRZ ISL8118CRZ 0 to +70 28 Ld 5x5 QFN L28.5x5 8 9 10 11 12 13 14 ISL8118IRZ ISL8118IRZ -40 to +85 28 Ld 5x5 QFN L28.5x5 Add -T* suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. FN6325 Rev 3.00 Page 1 of 20 August 12, 2014 VCC VDIFF MARGIN GND PGDLY FB PGOOD COMP EN FSET VFF BSOC VIN TSOCISL8118 FN6325 Rev 3.00 Page 2 of 20 August 12, 2014 Block Diagram VCC EN EXDRV VIN POWER-ON REFERENCE RESET (POR) REFIN INTERNAL SERIES EXTERNAL SERIES V = 0.591V REF LINEAR LINEAR DRIVER TSOC REFOUT 100 A MARGIN OFSP BOOT SOFT-START VOLTAGE AND SOURCE OCP MARGINING FAULT LOGIC OFSN TGATE OTA PWM LX SS COMP GATE CONTROL LOGIC FB EA COMP PVCC VCC OV/UV COMP OSCILLATOR 800mV BGATE SOURCE OCP PGND PGOOD COMP VSENSP GND G = -1 VSENSN GND G = 1 100 A UNITY GAIN SINKING OCP DIFF AMP PGDLY BSOC VDIFF PGOOD VFF FSET