ISL95837 print page 3+1 and 1+1 voltage regulator for imvp-7/vr12? cpus features description isim design simulation technical documentation tools and support pricing / samples related devices datasheet ISL95837 the isl95835, ISL95837 datasheet is restricted to a very limited number of customers. to request a datasheet please email jia wei at jwei@intersil.com v in (min) (v) 4.5 v in (max) (v) 5.5 v out (min) (v) 0 v out (max) (v) 1.52 i out (max) (a) 30 v bias (v) 5 applications vr12/imvp7 max # of outputs 2 max # of phases 1 droop y integrated mosfet driver y product information key features serial data bus dual outputs: configurable 3-, 2- or 1-phase for the 1st output using 2 integrated gate drivers 1-phase for the 2nd output using an integrated gate driver 0.5% system accuracy over-temperature supports multiple current sensing methods lossless inductor dcr current sensing precision resistor current sensing differential remote voltage sensing programmable v boot voltage at start-up resistor programmable i max , t max for both outputs adaptive body diode conduction time reduction description compliant with imvp-7/vr12?, the isl95835 provides a complete solution for microprocessor and graphic processor core power supply. it provides two voltage regulators (vrs) with three integrated gate drivers. the first vr can be configured as 3-, 2- or 1-phase vr while the second output is 1-phase vr , providing maximum flexibility. the two vrs share the serial control bus to communicate with the cpu and achieve lower cost and smaller board area compared with the two-chip approach. based on intersils robust ripple regulator (r3) technology?, the pwm modulator compared to traditional modulators, has faster transient settling time, variable switching frequency during load transients and has improved light load efficiency with its ability to automatically change switching frequency. the isl95835 has several other key features. both outputs support dcr current sensing with single ntc thermistor for dcr temperature compensation or accurate resistor current sensing. both outputs come with remote voltage sense, programmable v boot voltage, programmable i max , t max , adjustable switching frequency, oc protection and separate power-good. pa g e 1 of 2 ISL95837 3+1 and 1+1 volta g e re g ulator for imvp-7/vr12? cpus 11/9/2011
the ISL95837 can be considered as isl95835 dedicated for 1+1 application. vr1 and vr2 are both 1-phase vr. packaging / samples / ordering ibuy direct from intersil ibuy direct - out of stock request samples check distributor inventory available in rohs/pb-free part no. design-in status temp. package msl ISL95837hrz active hi-temp comm 40 ld qfn 3 ISL95837hrz-t active hi-temp comm 40 ld qfn t+r 3 ISL95837irz active ind 40 ld qfn 3 ISL95837irz-t active ind 40 ld qfn t+r 3 ms l = mois ture sensitivity level - per ipc/jedec j-std-020 smd = standard microcircuit drawing technical documentation datasheet(s): the isl95835, ISL95837 datasheet is restricted to a very limited number of customers. to request a datasheet please email jia wei at jwei@intersil.com tools and support isim design simulation no models available applications imvp-7/vr12 compliant computers related devices parametric table isl6353 multiphase pwm regulator for vr12 ddr memory systems isl6363 multiphase pwm regulator for vr12? desktop cpus isl6364 dual 4-phase + 1-phase pwm controller for vr12/imvp7 applications isl6364c dual 4-phase + 1-phase pwm controller for vr12 desktop applications isl6366 dual 6-phase + 1-phase pwm controller for vr12/imvp7 applications isl95831 3+1 voltage regulator for imvp-7/vr12 cpus isl95835 3+1 and 1+1 voltage regulator for imvp-7/vr12? cpus about us | careers | contact us | investors | legal | privacy | site map | subscribe | intranet ?2003-2011. intersil americas inc. all rights reserved. pa g e 2 of 2 ISL95837 3+1 and 1+1 volta g e re g ulator for imvp-7/vr12? cpus 11/9/2011
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