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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Download datasheet (345Kb)

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

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 Ld MSOP package,

making the entire converter occupy less than 0.15 in

PCB area with components on one side only. The 10 Ld

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

to +85°C temperature range.

Ordering Information

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.

Pinout

EL7531IY

EL7531IY-T7

EL7531IY-T13

EL7531IYZ

(Note)

EL7531IYZ-T7

(Note)

EL7531IYZ-T13

(Note)

PART NUMBER

BEAAA

BHAAA

MARKING

PART

EL7531 (10 LD MSOP)

SGND

PGND

VIN

VDD

TOP VIEW

TAPE &

REEL

13”

SYNC

7”

with a resistive divider.

Data Sheet

10 Ld MSOP

(Pb-free)

10 Ld MSOP

(Pb-free)

10 Ld MSOP

(Pb-free)

PACKAGE

MDP0043

DWG. #

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

PKG.

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

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

• Overcurrent and over-temperature protection

• External synchronizable up to 12MHz

• Pb-Free plus anneal available (RoHS compliant)

Applications

• PDA and pocket PC computers

• Bar code readers

• Cellular phones

• Portable test equipment

• Li-Ion battery powered devices

• Small form factor (SFP) modules

Typical Application Diagram

converter

10µF

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

July 13, 2006

(2.5V to 5.5V)

100kΩ

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

0.1µF

100Ω

* V

(0.97 cm

= 0.8V * (1 + R

VIN

VDD

SYNC

PGND

SGND

TOP VIEW

EL7531

) footprint for the complete 1A

/ R

)

100kΩ

124kΩ

1.8µH

10µF

(1.8V @ 1A)

EL7531

FN7428.9

470pF

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