DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl95835 ISL95835, ISL95837 FN7671 Rev 1.00 3+1 And 1+1 Voltage Regulator for IMVP-7/VR12 CPUs March 2, 2012 Compliant with IMVP-7/VR12, the ISL95835 provides a Features complete solution for microprocessor and graphic processor Serial Data Bus core power supply. It provides two Voltage Regulators (VRs) with three integrated gate drivers. The first VR can be Dual Outputs: configured as 3-, 2- or 1-phase VR while the second output is - Configurable 3-, 2- or 1-phase for the 1st Output using 2 1-phase VR, providing maximum flexibility. The two VRs share integrated Gate Drivers the serial control bus to communicate with the CPU and achieve - 1-phase for the 2nd Output using an Integrated Gate lower cost and smaller board area compared with the two-chip Driver approach. 0.5% System Accuracy Over-Temperature Based on Intersils Robust Ripple Regulator (R3) technology, Supports Multiple Current Sensing Methods the PWM modulator compared to traditional modulators, has - Lossless Inductor DCR Current Sensing faster transient settling time, variable switching frequency - Precision Resistor Current Sensing during load transients and has improved light load efficiency with its ability to automatically change switching frequency. Differential Remote Voltage Sensing The ISL95835 has several other key features. Both outputs Programmable V Voltage at Start-up BOOT support DCR current sensing with single NTC thermistor for Resistor Programmable I , T for Both Outputs MAX MAX DCR temperature compensation or accurate resistor current sensing. Both outputs come with remote voltage sense, Adaptive Body Diode Conduction Time Reduction programmable V voltage, programmable I , T , BOOT MAX MAX adjustable switching frequency, OC protection and separate Applications Power-Good. IMVP-7/VR12 Compliant Computers The ISL95837 can be considered as ISL95835 dedicated for 1+1 application. VR1 and VR2 are both 1-phase VR. Load Line Regulation 0.91 V = 19V IN 0.90 0.89 0.88 0.87 0.86 0.85 0.84 0.83 V = 12V IN 0.82 V = 8V IN 0.81 0.80 0 6 12 18 24 30 36 42 48 54 60 66 I (A) OUT FN7671 Rev 1.00 Page 1 of 2 March 2, 2012 V (V) OUTISL95835, ISL95837 Copyright Intersil Americas LLC 2011-2012. 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 FN7671 Rev 1.00 Page 2 of 2 March 2, 2012