SM8143 데이터 시트보기 (PDF) - Nippon Precision Circuits
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SM8143 Datasheet PDF : 8 Pages
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SM8143A
EL Driver
OVERVIEW
The SM8143A is a transformer-less electroluminescent (EL) driver IC, capable of driving displays up to
80cm2 (SM8143AV) or 70cm2 (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
I Dedicated EL driver
I 1.6 to 5.5V supply voltage
I Maximum operating current
• SM8143AV: 150mA max.
(VDD = 3.0V, Ta ≤ 70°C)
• SM8143AD: 100mA max.
(VDD = 3.0V, Ta ≤ 70°C)
I 3.5Ω typical output resistance
I 200Vp-p maximum EL driver voltage*
I 31 to 1500Hz EL drive frequency range*
I High voltage CMOS Process
I Package: VSOP-16, SON-10
*: Adjustable with external resistance.
APPLICATIONS
I Cellular phone
I Mobile equipment
I PDA
ORDERING INFORMATION
Device
SM8143AV
SM8143AD
Package
VSOP-16
SON-10
PINOUT
(Top view)
I VSOP-16
NC 1
CHV
NC
LDR
NC
VSS
NC
OCL 8
16 NC
OUT1
NC
OUT2
NC
VDD
ENA
9 OCE
I SON-10
VSS 1
OCL 2
OCE 3
ENA 4
VDD 5
10 CHV
9 LDR
8 NC
7 OUT1
6 6OUT2
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