1

®

FN7295

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

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EL7562

Monolithic 2Amp DC-DC Step-Down

Regulator

The EL7562 is an integrated,

synchronous step-down regulator with

output voltage adjustable from 1.0V to

3.8V. It is capable of delivering 2A continuous current at up

to 95% efficiency. The EL7562 operates at a constant

frequency pulse width modulation (PWM) mode, making

external synchronization possible. Patented on-chip

resistorless current sensing enables current mode control,

which provides cycle-by-cycle current limiting, over-current

protection, and excellent step load response. The EL7562 is

available in a fused-lead 16-pin QSOP package. With proper

external components, the whole converter fits into a less

small size make this EL7562 ideal for desktop and portable

applications.

The EL7562 is specified for operation over the 0°C to +70°C

temperature range.

Pinout

EL7562

(16-PIN QSOP)

TOP VIEW

Features

• Integrated synchronous MOSFETs and current mode

controller

• 2A continuous output current

• Up to 95% efficiency

• 3.3V or 5V nominal input voltage

• Adjustable output from 1V to 3.8V

• Cycle-by-cycle current limit

• Precision reference

• ±0.5% load and line regulation

• Adjustable switching frequency to 1MHz

• Oscillator synchronization possible

• Internal soft-start

• Over-temperature protection

• Under-voltage lockout

• 16-pin QSOP package

Applications

• DSP, CPU core and IO supplies

• Logic/Bus supplies

• Portable equipment

• DC-DC converter modules

• GTL + Bus power supply

Please refer to page 4 for 3.3V input Application Diagram

Manufactured under U.S. Patent No. 57,323,974

1

2

3

4

16

15

14

13

5

6

7

12

11

10

8

9

SGND

COSC

VDD

PGND

PGND

VIN

VIN

EN

PGND

VREF

FB

VDRV

LX

LX

VHI

PGND

270pF

0.1µF

0.1µF

100µF

39

Ω

(4.5V- 5.5V)

0.1µF

100µF

2.37k

Ω

1k

Ω

0.1µF

(3.3V,

2A)

Ordering Information

PART

NUMBER

PACKAGE

TAPE & REEL

PKG. DWG. #

EL7562CU

16-Pin QSOP

-

MDP0040

EL7562CU-T7

16-Pin QSOP

7”

MDP0040

EL7562CU-T13 16-Pin QSOP

13”

MDP0040

Data Sheet

April 30, 2004

NOT

REC

OMM

END

ED F

OR N

EW

DES

IGN

S

SEE

EL7

532