DATASHEET ISL8107 FN6605 Rev 1.00 Single-Phase Pulse-Width Modulation (PWM) Controller with Integrated High-Side October 29, 2008 Gate Drivers The ISL8107 is a single phase, non-synchronous buck Features controller with an integrated high-side MOSFET driver. The Operates from +9V to +75V Bias Supply Voltage controller operates from 9V to 75V input voltage range. The internal 1.192V reference voltage has a tolerance of 1% +1.192V Internal Voltage Reference over the industrial temperature range. - 1% tolerance Over the Industrial Temperature Range The ISL8107 employs voltage-mode control with Programmable Switching Frequency 100kHz to 600kHz feedforward compensation to provide optimal transient Simple Single-Loop Voltage Mode Control response and a constant loop gain over a wide input voltage Voltage Feedforward Compensation range. The switching frequency can be programmed from 100kHz to 600kHz by external resistor and capacitor. The Switching Frequency Synchronization switching frequency can be synchronized to an external Lossless, Programmable Overcurrent Protection clock signal through the SYNC pin. - Uses MOSFETs r DS(ON) The ISL8107 features programmable soft-start, hiccup mode - Hiccup Mode for short circuit protection, and over-temperature protection. Integrated N-Channel MOSFET Gate Drivers The overcurrent protection is implemented using MOSFETs r sensing. This approach simplifies the implementation DS(ON) Programmable Soft-Start without deteriorating the converter efficiency. Over-Temperature Protection Pinout QFN (5x5) Package ISL8107 - QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad (16 LD 5X5 QFN) Flat No Leads - Product Outline TOP VIEW - QFN Near Chip Scale Package Footprint Improves PCB Efficiency, Thinner in Profile Pb-Free (RoHS Compliant) 16 15 14 13 Applications VFF 1 12 EN/SS PGND Test and Measurement Instruments OCSET 2 11 VCC 10 PGOOD Routers and Switchers 3 SYNC 4 9 VBG Point of Load Modules Distributed DC/DC Power Architecture 576 8 Industrial Applications Telecom/Datacom Applications Ordering Information PART NUMBER PART TEMP. PACKAGE PKG. (Note) MARKING RANGE (C) (Pb-Free) DWG. ISL8107IRZ ISL8107 IRZ -40 to +85 16 Ld 5x5 QFN L16.5x5B ISL8107IRZ-T* ISL8107 IRZ -40 to +85 16 Ld 5x5 QFN L16.5x5B 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. FN6605 Rev 1.00 Page 1 of 16 October 29, 2008 PVCC RT/CT BOOT SGND UGATE FB PHASE COMPISL8107 FN6605 Rev 1.00 Page 2 of 16 October 29, 2008 Block Diagram VCC INTERNAL INTERNAL INT. BIAS VOLTAGE PVCC REGULATOR REGULATOR POWER-ON RESET (POR) - OCSET INT. BIAS VOLTAGE + OCFLT 104A - 0.77V + EN/SS SOFT-START AND FAULT LOGIC BOOT SGND UGATE GATE CONTROL LOGIC PHASE + - PWM + REFERENCE + VBG GM V = 1.192V REF EA PGOOD - - 1.345V OSCILLATOR + PGND OR - + 1.03V FB COMP RT/CT SYNC VFF