DATASHEET ISL8106 FN9283 Rev 1.00 Wide V , 7V to 25V, Single-Phase PWM Controller with Integrated MOSFET Drivers IN November 10, 2006 The ISL8106 is a Single-Phase Synchronous-Buck PWM Features Controller with a input voltage range of +7.0V to +25.0V 3 Wide input voltage range: +7.0V to +25.0V featuring Intersil s Robust Ripple Regulator (R ) technology that delivers exceptional dynamic response to input voltage 3 High performance R technology delivers extremely fast and output load transients. Integrated MOSFET drivers, 5V transient response LDO, and bootstrap diode result in fewer components and +0.6V Internal Reference smaller implementation area for power supply systems. - 0.6% tolerance over the commercial temperature The ISL8106 features a 1.5ms digital soft-start and can be Range (0C to +70C) started into a pre-biased output voltage. A resistor divider is - 1.0% tolerance over the industrial temperature range used to program the output voltage setpoint. The ISL8106 (-40C to +85C) can be configured to operate in forced-continuous- conduction-mode (FCCM) or in diode-emulation-mode Output voltage range: +0.6V to V -0.3V CC (DEM), which improves light-load efficiency. In FCCM the Selectable forced continuous conduction mode or diode controller always operates as a synchronous rectifier, emulation mode switching the bottom-side MOSFET regardless of the output load. With DEM enabled, the bottom-side MOSFET is Integrated MOSFET drivers with shoot-through protection disabled preventing negative current flow from the output External type-two loop compensation inductor during low load operation. This makes the ISL8106 an excellent choice for all green applications. An audio Internal 5V low-dropout regulator with Integrated boot- filter prevents the PWM switching frequency from entering strap diode the audible spectrum due to extremely light load while in DEM. Programmable PWM frequency: 200kHz to 600kHz A PGOOD pin featuring a unique fault-identification PWM minimum frequency above audible spectrum capability significantly reduces system trouble-shooting time Internal digital soft-start with prebiased startup capability and effort. The pull-down resistance of the PGOOD pin is 30 for an overcurrent fault, 60 for an overvoltage fault, or Power good monitor with fault identification by PGOOD 90 for either an undervoltage fault or during soft-start. pull down resistance Overcurrent protection is accomplished by measuring the Lossless, programmable overcurrent protection voltage drop across the r of the bottom-side DS(ON) - Uses bottom-side MOSFETs r MOSFET. A single resistor programs the overcurrent and DS(ON) short-circuit points. Overvoltage and undervoltage protection Undervoltage protection, soft crowbar overvoltage is monitored at the FB voltage feedback pin. protection and over-temperature protection Pinout Pb-free plus anneal available (RoHS compliant) 16 LD QFN (4mm x 4mm) Applications TOP VIEW Telecom/datacom applications Industrial applications 16 15 14 13 Distributed DC/DC power architecture PVCC VIN 1 12 Point-of-load modules BGATE VCC 2 11 GND 3 10 PGND FCCM 4 9 BSOC EN 576 8 Ordering Information PART NUMBER PART MARKING TEMP (C) PACKAGE PKG. DWG. ISL8106CRZ* 8106CRZ 0 to +70 16 Ld 4x4 QFN L16.4x4 FN9283 Rev 1.00 Page 1 of 16 November 10, 2006 COMP PGOOD FB LX FSET TGATE BOOT VOISL8106 Ordering Information PART NUMBER PART MARKING TEMP (C) PACKAGE PKG. DWG. ISL8106IRZ* 8106IRZ -40 to +85 16 Ld 4x4 QFN L16.4x4 ISL8106EVAL1Z Evaluation Board *Add -T suffix for tape and reel. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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. Typical Application V IN +7V TO +25V PGOOD PGOOD VIN BOOT C CBOOT IN RPGOOD Q TS PVCC TGATE L OUT LX V OUT R VCC VCC BSOC C OUT C PVCC R C BSOC VCC GND ISL8106 Q BGATE BS FCCM EN PGND R COMP COMP FSET C COMP1 FB C FSET R FSET C COMP2 VO R R BOT TOP FN9283 Rev 1.00 Page 2 of 16 November 10, 2006