DATASHEET EL7566 FN7102 Rev 7.00 Monolithic 6A DC/DC Step-Down Regulator May 8, 2006 The EL7566 is a full-feature synchronous step-down regulator Features capable of up to 6A and 96% efficiency. The device operates Integrated MOSFETs from 3V to 6V input supply (V ). With internal CMOS power IN FETs, the device can operate at up to 100% duty ratio, 6A continuous output current allowing for an output voltage range of 0.8V to nearly V . An IN Up to 96% efficiency adjustable switching frequency up to 1MHz enables the use of Multiple supply start-up tracking small components, thereby reducing board area consumption to under 0.72sq-in on one side of a PCB. The EL7566 Built-in 5% voltage margining operates in constant frequency PWM mode, making external 3V to 6V input voltage synchronization possible. A soft-start feature is integrated in 2 the EL7566 to limit in-rush currents and allow for a smooth 0.72 in footprint with components on one side of PCB voltage ramp from zero to regulation. Other start-up features Adjustable switching frequency to 1MHz are integrated to add flexibility for synchronizing many supplies in multiple configurations. The EL7566 also offers a Oscillator synchronization possible voltage margining capability that shifts the output voltage 5% 100% duty ratio for validation of system card performance and reliability during Junction temperature indicator manufacturing tests. A junction temperature indicator conveniently monitors the silicon die temperature, saving time Over-temperature protection in thermal characterization. Internal soft-start An easy-to-use simulation tool is available for download and Variable output voltage down to 0.8V can be used to modify design parameters such as switching frequency, voltage ripple, ambient temperature, as well as Power-good indicator view schematics waveforms, efficiency graphs, and 28 Ld HTSSOP package complete BOM with Gerber layout. Pb-free plus anneal available (RoHS compliant) Applications Point-of-regulation power supplies FPGA Core and I/O supplies DSP, CPU Core, and IO supplies Logic/Bus supplies Portable equipment Related Documentation Technical Brief 415 - Using the EL7566 Demo Board Easy-to-use applications software simulation tool available at www.intersil.com/dc-dc FN7102 Rev 7.00 Page 1 of 14 May 8, 2006EL7566 Ordering Information PART NUMBER PART MARKING TAPE & REEL TEMP RANGE (C) PACKAGE PKG. DWG. EL7566DRE 7566DRE - 0 to 85 28 Ld HTSSOP MDP0048 EL7566DRE-T7 7566DRE 7 0 to 85 28 Ld HTSSOP MDP0048 EL7566DRE-T13 7566DRE 13 0 to 85 28 Ld HTSSOP MDP0048 EL7566DREZ (Note) 7566DREZ - 0 to 85 28 Ld HTSSOP (Pb-free) MDP0048 EL7566DREZ-T7 (Note) 7566DREZ 7 0 to 85 28 Ld HTSSOP (Pb-free) MDP0048 EL7566DREZ-T13 (Note) 7566DREZ 13 0 to 85 28 Ld HTSSOP (Pb-free) MDP0048 EL7566AIREZ (Note) 7566AIREZ -40 to 85 28 Ld HTSSOP (Pb-free) MDP0048 EL7566AIREZ-T7 (Note) 7566AIREZ 7 -40 to 85 28 Ld HTSSOP (Pb-free) MDP0048 EL7566AIREZ-T13 (Note) 7566AIREZ 13 -40 to 85 28 Ld HTSSOP (Pb-free) MDP0048 NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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. Typical Application Diagram C C R C 1 COMP SGND 28 270pF 8200pF 10K R 2 2 VREF COSC 27 10K 0.047F 3 FB STN 26 R 1 21.5K 4 VO STP 25 0.22F 5 VTJ EN 24 6 TM PG 23 7 SEL VDD 22 V 8 LX VIN 21 IN (3V TO 6V) 2.7H 9 LX VIN 20 V OUT (2.5V, 6A) 100F 10 LX VIN 19 150F 11 LX PGND 18 12 LX PGND 17 13 LX PGND 16 14 NC NC 15 FN7102 Rev 7.00 Page 2 of 14 May 8, 2006