DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl9501 ISL9501 FN9249 Rev 2.00 Precision Single-Phase Buck PWM Controller December 22, 2008 The ISL9501 Single-phase Buck PWM control IC, with Features integrated half bridge gate drivers, proVSELes a precision Diode Emulation Functionality in Deep and Deeper Sleep voltage regulation system for microprocessors in notebook Modes for Improved Light Load Efficiency computers. Single-phase operation proVSELes flexibility in meeting the requirements of the latest microprocessors. This Single-phase Power Conversion control IC also features both input voltage feed-forward and Loss-less Current Sensing for Improved Efficiency and average current mode control for excellent dynamic Reduced Board Area response, Loss-less current sensing using MOSFET - Optional Discrete Precision Current Sense Resistor r and user selectable switching frequencies from DS(ON) Internal Gate-Drive and Boot-Strap Diodes 250kHz to 500kHz. Precision CORE Voltage Regulation The ISL9501 includes a 6-bit digital-to-analog converter - 0.8% System Accuracy Over-Temperature (DAC) that dynamically adjusts the CORE PWM output voltage. The ISL9501 also has logic inputs to select Active, 6-Bit Microprocessor Voltage Identification Input Deep Sleep and Deeper Sleep modes of operation. A Programmable Droop and CORE Voltage Slew Rate precision reference, remote sensing and proprietary architecture, with integrated, processor-mode, compensated Direct Interface with System Logic for Deep and Deeper Droop, proVSELe excellent static and dynamic CORE Sleep Modes of Operation voltage regulation. Easily Programmable Voltage Setpoints for Initial Boot, Deep Sleep and Deeper Sleep Modes To improve efficiency at light loading, the ISL9501 will operate in diode emulation in Deep and Deeper Sleep Excellent Dynamic Response modes. - Combined Voltage Feed-Forward and Average Current Mode Control Another feature of this IC controller is the PGOOD monitor circuit that is held low until CORE voltage increases (during Overvoltage, Undervoltage and Overcurrent Protection its soft-start sequence) to within 12% of the Boot voltage. Power-Good Output with Internal Blanking during VSEL This PGOOD signal is masked during VSEL changes. and Mode Changes Output overcurrent, overvoltage and undervoltage are User Programmable Switching Frequency of 250kHz to monitored and result in the converter latching off and 500kHz PGOOD signal being held low. Pb-Free (RoHS Compliant) The overvoltage and undervoltage thresholds are 112% and 84% of the VSEL, Deep or Deeper Sleep setpoint, respectively. Overcurrent protection features a 32 cycle overcurrent shutdown. PGOOD, overvoltage, undervoltage and overcurrent proVSELe monitoring and protection for the microprocessor and power system. The ISL9501 IC is available in a 38 Ld TSSOP and a 40 Ld QFN. Ordering Information PART NUMBER PART TEMP RANGE PACKAGE PKG. (Note) MARKING (C) (Pb-free) DWG ISL9501CVZ* ISL9501 CVZ -10 to +85 38 Ld TSSOP M38.173 ISL9501CRZ* ISL95 01CRZ -10 to +85 40 Ld 6x6 QFN L40.6x6 *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 FN9249 Rev 2.00 Page 1 of 2 December 22, 2008ISL9501 Copyright Intersil Americas LLC 2005-2008. All Rights Reserved. All trademarks and registered trademarks are the property of their respective owners. For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in Intersil s sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com FN9249 Rev 2.00 Page 2 of 2 December 22, 2008