EL7554IREZ Intersil, EL7554IREZ Datasheet

EL7554IREZ

Manufacturer Part Number

EL7554IREZ

Description

IC REG 4A DC-DC STEP DN 28HTSSOP

Manufacturer

Intersil

Type

Step-Down (Buck)r

Datasheets

1.EL7554IREZ.pdf (14 pages)

2.EL7554IREZ.pdf (14 pages)

Specifications of EL7554IREZ

Internal Switch(s)

Yes

Synchronous Rectifier

Yes

Number Of Outputs

Voltage - Output

0.8 ~ 6 V

Current - Output

Frequency - Switching

370kHz

Voltage - Input

3 ~ 6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP

Primary Input Voltage

3.3V

No. Of Outputs

Output Voltage

Output Current

No. Of Pins

Operating Temperature Range

-40Â°C To +85Â°C

Msl

MSL 3 - 168 Hours

Current Rating

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

EL7554IREZ

Manufacturer:

INTERSIL

Quantity:

2 058

Company:

Meier Automation Equipment Co., Limited

Part Number:

EL7554IREZ

Manufacturer:

INTERSIL

Quantity:

20 000

Company:

H&T Electronics

Part Number:

EL7554IREZ

Quantity:

1 350

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

EL7554IREZ-T13

Manufacturer:

INFINEON

Quantity:

8 623

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

EL7554IREZ-T7

Manufacturer:

Intersil

Quantity:

373

Current page: 1 of 14
Download datasheet (342Kb)

Monolithic 4A DC/DC Step-Down

Regulator

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

regulator capable of up to 96% efficiency. This device

operates from 3V to 6V V

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

allowing for output voltage range from 0.8V up to nearly

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.

An easy-to-use simulation tool is available for

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 Ld HTSSOP package and is

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

range.

Ordering Information

EL7554IRE*

EL7554IREZ*

(See Note)

*Add “-T7” or “-T13” suffix for tape and reel. Please refer to TB347 for

details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets; molding compounds/die attach

materials and 100% matte tin plate PLUS ANNEAL - e3 termination

finish, which is 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.

NUMBER

.The adjustable high switching frequency of up to 1MHz

PART

7554IRE

7554IREZ

MARKING

PART

-40 to +85 28 Ld HTSSOP MDP0048

-40 to +85 28 Ld HTSSOP

input supply. With internal CMOS

RANGE

TEMP.

(°C)

Data Sheet

(Pb-free)

PACKAGE

download

MDP0048

DWG. #

PKG.

1-888-INTERSIL or 1-888-468-3774

and

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

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

• 0.58 in

• 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 Ld 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 parts for EL7554IREZ

EL7554IREZ Summary of contents

Page 1

... RANGE NUMBER MARKING (°C) EL7554IRE* 7554IRE - HTSSOP MDP0048 EL7554IREZ* 7554IREZ - HTSSOP (See Note) (Pb-free) *Add “-T7” or “-T13” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets ...

Page 2

Typical Application Diagram R 2 10. 12.7K V OUT (1.8V, 4A) 47µF 2 EL7554 COMP SGND 28 220pF 0.018µF 2.32K 2 VREF COSC 27 0.018µ STN STP ...

Page 3

... FB_TC F Switching Frequency S I Feedback Input Pull-up Current FB 3 EL7554 = +25°C) Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C +0.3V Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C IN Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below +0.3V http://www.intersil.com/pbfree/Pb-FreeReflow.asp 3.3V +25° OSC CONDITIONS 0 < I < ...

Page 4

DC Electrical Specifications V PARAMETER DESCRIPTION V EN Input High Level EN_HI V EN Input Low Level EN_LO I Enable Pull-up Current EN TM, S Input High Level EL_HI TM, S Input Low Level EL_LO Pin Descriptions PIN NUMBER PIN ...

Page 5

Block Diagram V TJ JUNCTION TEMPERATURE V DD 2.2nF EN STP POWER TRACKING STN EA COMP SGND 5 EL7554 TM 0.018µF 220pF SEL V C REF OSC VOLTAGE OSCILLATOR REFERENCE PWM CONTROLLER DRIVERS CURRENT SENSE V ...

Page 6

Typical Performance Curves 3.3V 1.8V 4A 2.2µ =3.3V O 0.95 0.9 0.85 V =0.8V O 0.8 V = 0.7 ...

Page 7

Typical Performance Curves 3.3V 1.8V 4A 2.2µ 610 605 V =5V IN 600 595 590 V =3.3V IN 585 0 0 ...

Page 8

Waveforms 3.3V 1.8V 4A 2.2µ 0.5ms/DIV FIGURE 12. START-UP 50µs/DIV FIGURE 14. SHUT-DOWN 1ms/DIV FIGURE 16. VOLTAGE MARGINING 8 EL7554 = 2x10µ 47µF, ...

Page 9

Waveforms (Continued 3.3V 1.8V 4A 2.2µ 100µ 150µF OUT 2ms/DIV FIGURE 18. ADJUSTABLE START-UP Detailed Description The EL7554 is a ...

Page 10

V close The maximum achievable × – DSON1 O Where R is the DC resistance on the inductor and ...

Page 11

C 0.1µF STN - + STP 200K EL7554 V IN FIGURE 21. ADJUSTABLE START-UP In this application, C and C may be increased to IN OUT reduce input/output ripple because the pulse skipping nature of the method. ...

Page 12

ESR to satisfy the output ripple ΔV requirement: O ΔV ΔI × ESR = O L When output has a step load change ΔI drop is ESR*ΔI . Then V will drop even further before the ...

Page 13

Thermal Management The EL7554IRE is packaged in a thermally-efficient HTSSOP-28 package, which utilizes the exposed thermal pad at the bottom to spread heat through PCB metal. Therefore: 1. The thermal pad must be soldered to the PCB 2. Maximize the ...

Page 14

... Accordingly, the reader is cautioned to verify that data sheets 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 ...

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