1

®

FN7218.3

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

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Copyright Intersil Americas Inc. 2003-2004, 2007. All Rights Reserved

Elantec is a registered trademark of Elantec Semiconductor, Inc.

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

EL6203

Laser Driver Oscillator

The EL6203 is a push-pull oscillator used to reduce laser

noise. It uses the standard interface to existing ROM

controllers. The frequency and amplitude are each set with a

separate resistor connected to ground. The tiny package

and harmonic reduction allow the part to be placed close to a

laser with low RF emissions. An auto turn-off feature allows

it to easily be used on combo CD-RW plus DVD-ROM

pick-ups.

One external resistor sets the oscillator frequency. Another

external resistor sets the oscillator amplitude. If the APC

current is reduced such that the average laser voltage drops

to less than 1.1V, the output and oscillator are disabled,

reducing power consumption to a minimum.

The current drawn by the oscillator consists of a small bias

current, plus the peak output amplitude in the positive cycle.

In the negative cycle, the oscillator subtracts peak output

amplitude from the laser APC current.

This part is pin-compatible to the EL6201. It is superior to the

EL6201 in several ways: It has up to 100mA output

capability, it is more power-efficient, it has less harmonic

content, and it has an auto shut-off feature activated at 1.1V.

The part is available in the space-saving 5 Ld SOT-23

package. It is specified for operation from 0

°C to +70°C.

Pinout

EL6203

(5 LD SOT-23)

TOP VIEW

Features

• Low power dissipation

• User-selectable frequency from 60MHz to 600MHz

controlled with a single resistor

controlled with a single resistor

• Auto turn-off threshold

• Soft edges for reduced EMI

• Small 5 Ld SOT-23 package

• Pb-free available (RoHS compliant)

Applications

• DVD players

• DVD-ROM drives

• CD-RW drives

•MO drives

• General purpose laser noise reduction

1

2

3

5

4

VDD

RFREQ

GND

IOUT

RAMP

Ordering Information

PART

NUMBER

PART

MARKING

PACKAGE

PKG.

DWG. #

EL6203CW

Z

5 Ld SOT-23

MDP0038

EL6203CW-T13*

Z

5 Ld SOT-23

MDP0038

EL6203CW-T7*

Z

5 Ld SOT-23

MDP0038

EL6203CW-T7A*

Z

5 Ld SOT-23

MDP0038

EL6203CWZ

(Note)

BMAA

5 Ld SOT-23

(Pb-free)

MDP0038

EL6203CWZ-T7*

(Note)

BMAA

5 Ld SOT-23

(Pb-free)

MDP0038

EL6203CWZ-T7A*

(Note)

BMAA

5 Ld SOT-23

(Pb-free)

MDP0038

*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.

Data Sheet

August 13, 2007