SP4425 Datasheet, PDF(7/14 Page) Sipex Corporation – Electroluminescent Lamp Driver Low Voltage Applications

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SP4425 Datasheet, PDF (7/14 Pages) Sipex Corporation – Electroluminescent Lamp Driver Low Voltage Applications

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Pager Application

HON=VDD=ON

HON=0V=OFF

VIN=1.5V +

COSC =180pF

IN4148

NOTE:

Keep coil as close to

SP4425 as possible

CINT=1800pF

COSC

VSS

Coil

HON

VDD

EL1

EL2

SP4425

Typical SP4425 Application Circuit

0.1ÂµF Low ESR

Decoupling

Capacitor

EL Lamp 5Ftl

1.5 sq.in.

4nF

NOTE:

Keep high voltage traces

short and away from VDD

and clock lines

HON=VDD=ON

HON=0V=OFF

VIN=+1.5V

COSC=180pF

IN4148

NOTE:

Keep coil as close to

SP4425 as possible

CINT=1800pF

COSC

VSS

Coil

HON

VDD

EL1

EL2

SP4425

SP4425 1.5V Test Circuit

0.1ÂµF Low ESR

Decoupling

Capacitor

100â¦

5Ftl

8.2nF

NOTE:

Keep high voltage traces

short and away from VDD

and clock lines

HON=VDD=ON

HON=0V=OFF

VIN=3V

COSC =180pF

IN4148

NOTE:

Keep coil as close to

SP4425 as possible

Cint = 470pF

COSC

VSS

Coil

HON

VDD

EL1

EL2

SP4425

0.1ÂµF Low ESR

Decoupling

Capacitor

100â¦

5Ftl

4nF

NOTE:

Keep high voltage traces

short and away from VDD

and clock lines

SP4425 3V Test Circuit

SP4425DS/20

SP4425 Electroluminescent Lamp Driver

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