1

®

FN7360.2

EL7554

Monolithic 4 Amp DC-DC Step-Down

Regulator

The EL7554 is a full-feature synchronous 4A step-down

regulator capable of up to 96% efficiency. This device

CMOS power FETs, the device can operate at up to 100%

duty ratio, allowing for output voltage range from 0.8V up to

1MHz enables the use of small components, making the

whole converter occupy less than 0.58 square inch with

components on one side of the PCB. The EL7554 operates

at constant frequency PWM mode, making external

synchronization possible. The EL7554 features soft-start

and full start-up control, which eliminates the in-rush current

and enables users to control the start-up of multiple

converters to any configuration with ease. The EL7554 also

offers a ±5% voltage margining capability that allows raising

and lowering of the supplies derived from the EL7554 to

validate the performance and reliability of system cards

quickly and easily during manufacturing testing. A junction

temperature indicator conveniently monitors the silicon die

temperature, saving designers time in the tedious thermal

characterization.

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.

The EL7554 is available in a 28-pin HTSSOP package and

is specified for operation over the -40°C to +85°C

temperature range.

Features

• Integrated MOSFETs

• 4A continuous output current

• Up to 96% efficiency

• All ceramic capacitors

• 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 418 - Using the EL7554 Demo Board

• Easy to use applications software simulation tool available

Ordering Information

PART

NUMBER

PACKAGE

TAPE &

REEL

PKG. DWG. #

EL7554IRE

28-Pin HTSSOP

-

MDP0048

EL7554IRE-T7

28-Pin HTSSOP

7”

MDP0048

EL7554IRE-T13

28-Pin HTSSOP

13”

MDP0048

EL7554IREZ

(See Note)

28-Pin HTSSOP

(Pb-free)

-

MDP0048

EL7554IREZ-T7

(See Note)

28-Pin HTSSOP

(Pb-free)

7”

MDP0048

EL7554IREZ-

T13 (See Note)

28-Pin HTSSOP

(Pb-free)

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-020.

Data Sheet

January 31, 2005

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

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Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved

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