SM8143A 参数 Datasheet PDF下载

SM8143A

EL Driver

OVERVIEW

The SM8143A is a transformer-less electroluminescent (EL) driver IC, capable of driving displays up to

80cm

2

(SM8143AV) or 70cm

2

(SM8143AD) in size. It is a high-efficiency driver that features revised coil

switching transistor ON resistance and output circuit configuration to reduce loss. The EL drive frequency and

coil drive frequency can be controlled independently, making the driver circuit optimizable to match applica-

tion requirements. A microcontroller interface pin (ENA) is provided, which can be used to control the EL

driver ON/OFF function.

FEATURES

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PINOUT

(Top view)

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Dedicated EL driver

1.6 to 5.5V supply voltage

Maximum operating current

• SM8143AV: 150mA max.

(V

DD

= 3.0V, Ta

≤

70

°

C)

• SM8143AD: 100mA max.

(V

DD

= 3.0V, Ta

≤

70

°

C)

3.5

Ω

typical output resistance

200Vp-p maximum EL driver voltage*

31 to 1500Hz EL drive frequency range*

High voltage CMOS Process

Package: VSOP-16, SON-10

VSOP-16

NC

CHV

NC

LDR

NC

VSS

NC

OCL

1

16

NC

OUT1

NC

OUT2

NC

VDD

ENA

*: Adjustable with external resistance.

8

9

OCE

APPLICATIONS

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Cellular phone

Mobile equipment

PDA

I

SON-10

ORDERING INFORMATION

Device

SM8143AV

SM8143AD

Package

VSOP-16

SON-10

VSS

1

OCL

2

OCE

3

ENA

4

VDD

5

10

9

8

7

6

6

CHV

LDR

NC

OUT1

OUT2

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