EL7531IYZT7 Intersil Corporation, EL7531IYZT7 Datasheet

EL7531IYZT7

Manufacturer Part Number

EL7531IYZT7

Description

MSOP10

Manufacturer

Intersil Corporation

Datasheets

1.EL7531IYZT7.pdf (11 pages)

2.EL7531IYZT7.pdf (10 pages)

Specifications of EL7531IYZT7

Date_code

10+

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Monolithic 1A Step-Down Regulator with

Low Quiescent Current

The EL7531 is a synchronous, integrated FET 1A step-down

regulator with internal compensation. It operates with an

input voltage range from 2.5V to 5.5V, which accommodates

supplies of 3.3V, 5V, or a Li-Ion battery source. The output

can be externally set from 0.8V to V

divider.

The EL7531 features automatic PFM/PWM mode control, or

PWM mode only. The PWM frequency is typically 1.4MHz

and can be synchronized up to 12MHz. The typical no load

quiescent current is only 120µA. Additional features include

a Power-Good output, <1µA shut-down current, short-circuit

protection, and over-temperature protection.

The EL7531 is available in the 10-pin MSOP package,

making the entire converter occupy less than 0.15 in

PCB area with components on one side only. The 10-pin

MSOP package is specified for operation over the full -40°C

to +85°C temperature range.

Ordering Information

NOTE: Intersil Pb-free products employ special Pb-free material

sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which is 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-020B.

EL7531IY

EL7531IY-T7

EL7531IY-T13

EL7531IYZ (Note)

EL7531IYZ-T7 (Note) 10-Pin MSOP (Pb-free)

EL7531IYZ-T13

(Note)

NUMBER

PART

10-Pin MSOP (Pb-free)

10-Pin MSOP

PACKAGE

Data Sheet

with a resistive

TAPE &

REEL

13”

7”

MDP0043

DWG. #

PKG.

1-888-INTERSIL or 321-724-7143

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

* V

(1.8V@1A)

(2.5V-6V)

= 0.8V * (1 + R

Features

• Less than 0.15 in

• Components on one side of PCB

• Max height 1.1mm MSOP10

• Power-Good (PG) output

• Internally-compensated voltage mode controller

• Up to 94% efficiency

• <1µA shut-down current

• 120µA quiescent current

• Over-current and over-temperature protection

• External synchronizable up to 12MHz

• Pb-free Available

Applications

• PDA and pocket PC computers

• Bar code readers

• Cellular phones

• Portable test equipment

• Li-Ion battery powered devices

• Small form factor (SFP) modules

Pinout and Typical Application Diagram

10µF

September 30, 2004

converter

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

1.8µH

/ R

)

Intersil (and design) is a registered trademark of Intersil Americas Inc.

0.1µF

10µF

100Ω

(0.97 cm

SGND

PGND

VIN

VDD

TOP VIEW

EL7531

) footprint for the complete 1A

100kΩ

RSI

124kΩ

100kΩ

EL7531

FN7428.4

100kΩ

470pF

SYNC

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