1

®

FN7102.5

EL7566

Monolithic 6 Amp DC-DC Step-Down

Regulator

The EL7566 is a full-feature synchronous step-down regulator

capable of up to 6A and 96% efficiency. The device operates

FETs, the device can operate at up to 100% duty ratio,

adjustable switching frequency up to 1MHz enables the use of

small components, thereby reducing board area consumption

to under 0.72sq-in on one side of a PCB. The EL7566

operates in constant frequency PWM mode, making external

synchronization possible. A soft-start feature is integrated in

the EL7566 to limit in-rush currents and allow for a smooth

voltage ramp from zero to regulation. Other start-up features

are integrated to add flexibility for synchronizing many

supplies in multiple configurations. The EL7566 also offers a

voltage margining capability that shifts the output voltage ±5%

for validation of system card performance and reliability during

manufacturing tests. A junction temperature indicator

conveniently monitors the silicon die temperature, saving time

in thermal characterization.

An easy-to-use simulation tool is available for download and

can be used to modify design parameters such as switching

frequency, voltage ripple, ambient temperature, as well as

view schematics waveforms, efficiency graphs, and

complete BOM with Gerber layout.

Features

• Integrated MOSFETs

• 6A continuous output current

• Up to 96% efficiency

• Multiple supply start-up tracking

• Built-in ±5% voltage margining

• 3V to 6V input voltage

• Adjustable switching frequency to 1MHz

• Oscillator synchronization possible

• 100% duty ratio

• Junction temperature indicator

• Over-temperature protection

• Internal soft-start

• Variable output voltage down to 0.8V

• Power-good indicator

• 28-pin HTSSOP package

• Pb-Free 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

Ordering Information

PART

NUMBER

PACKAGE

TAPE &

REEL

PKG.

DWG. #

EL7566DRE

28-HTSSOP

-

MDP0048

EL7566DRE-T7

28-HTSSOP

7”

MDP0048

EL7566DRE-T13

28-HTSSOP

13”

MDP0048

EL7566DREZ (Note)

28-HTSSOP (Pb-free)

-

MDP0048

EL7566DREZ-T7 (Note) 28-HTSSOP (Pb-free)

7”

MDP0048

EL7566DREZ-T13 (Note) 28-HTSSOP (Pb-free)

13”

MDP0048

EL7566AIREZ (Note)

28-HTSSOP (Pb-free)

-40°C to 85°C

MDP0048

EL7566AIREZ-T7 (Note) 28-HTSSP (Pb-free)

-40°C to 85°C

7”

MDP0048

EL7566AIREZ-T13

(Note)

28-HTSSOP (Pb-free)

-40°C to 85°C

13”

MDP0048

NOTE: Intersil Pb-free 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-020C.

Data Sheet

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2004. All Rights Reserved.

All other trademarks mentioned are the property of their respective owners.

December 1, 2004