DATASHEET ISL8560 FN9244 Rev 7.00 DC/DC Power Switching Regulator September 19, 2008 The ISL8560 is a step down DC/DC power switching Features regulator which accepts 9.0V to 60V input and provides a 2A Voltage feedforward mode output current. The output voltage can be set in the range between 1.21V and 55V by means of an external divider. Step down DC/DC supporting up to 2A The device uses an internal power DMOS transistor with a Input voltage range of 9.0V to 60V typical r of 0.19 to obtain very high efficiency and DS(ON) Internal reference of 1.21V 1% high switching speed. A switching frequency in the range of 100kHz to 600kHz can be realized (the maximum power Adjustable output voltage range of 1.21V to 55V dissipation of the various packages must be observed). Adjustable switching frequency 100kHz to 600kHz Notable features of this next generation of DC/DC converter Frequency SYNC pin includes pulse-by-pulse current limit for FET protection, hiccup mode for short circuit protection, voltage feedforward Zero load current operation regulation, Frequency SYNC, soft-start, low standby current Pulse-by-pulse mode current limit and Hiccup mode of 60A typical in the disabled state, and thermal shut-down. Low standby current of 60A typical The device is available in a 20 Ld QFN package. Thermal shut-down Ordering Information Load dump to 100V for 400ms PART TEMP. Pb-Free (RoHS compliant) NUMBER PART RANGE PACKAGE PKG. (Note) MARKING (C) (Pb-Free) DWG. Applications ISL8560IRZ ISL 8560IRZ -40 to +85 20 Ld 6x6 QFN L20.6x6B Industrial and automotive power supplies ISL8560IRZ-T* ISL 8560IRZ -40 to +85 20 Ld 6x6 QFN L20.6x6B Portable computers *Please refer to TB347 for details on reel specifications. Battery chargers NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach Distributed power systems materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Related Literature Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed Technical Brief TB363 Guidelines for Handling and the Pb-free requirements of IPC/JEDEC J STD-020. Processing Moisture Sensitive Surface Mount Devices (SMDs) Pinout ISL8560 (20 LD QFN) TOP VIEW 20 19 18 17 16 LX 1 15 LX 2 14 LX SS 3 13 BOOT PGND 4 12 EN PGOOD 5 11 VCC5 REF 67 8 9 10 FN9244 Rev 7.00 Page 1 of 17 September 19, 2008 SYNC VIN RTCT VIN SGND VIN FB VIN COMP LXISL8560 Absolute Maximum Ratings Thermal Information Input Voltage VIN . GND - 0.3V to 72V Thermal Resistance (Typical, Notes 1, 2) (C/W) (C/W) JA JC Voltage at BOOT pin GND - 0.3V to 82V QFN Package 30 1.5 LX, RTCT . GND - 0.3V to 60V Maximum Power Dissipation 3W REF, FB, SS, EN, SYNC, PGOOD pins .8V Maximum Junction Temperature (Hermetic Package or Die) +150C VCC5* GND - 0.3V to 5.5V Maximum Junction Temperature (Plastic Package) . +150C Maximum Storage Temperature Range -65C to +150C Recommended Operating Conditions Pb-Free Reflow Profile .see link below