SM8140A
NIPPON PRECISION CIRCUITS INC.
EL Driver IC
OVERVIEW
The SM8140A is designed for using as EL (Elec-
tronic Luminescence) sheet driver require very low
external parts counts, this result that very compact
and thin EL driver units can be made.
Also this device has the features to use in wider
range of applications demanding low quiescent cur-
rent, low supply voltages, low operating supply cur-
rents, simple brightness control and low EMI
(Electro-Magnetic Interference) emission due to the
inherent smooth driver wave forms.
PIN OUT
( Top View )
14pin SSOP
CHV
LDR
VSS1
OCL2
OCL1
OCE2
OCEl
7
1
14
OUT1
OUT2
CP2
CP1
CPO
VDD
SM8140AM
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
s
1.80MAX
1.50
Specially providing EL driver functions
Non-transformer for compact outline
Bipolar driving for high power efficiency
Very low noise smooth driver wave forms
Brightness control with driving frequency change
(An external resistance determines the driving fre-
quency)
Low power consumption by quiescent current
control
ON-chip high voltage output MOS transistor
Large EL sheet (Exceeding 100 cm
2
) drivable
supply voltage
V
DD
=
2.4V to 3.6V or 5.0V
1.5V and 3V power applicable
(Refer to APPLICATION HINTS)
Maximum output driver voltage:200V
P
−
P
Typical driver frequency:250Hz
14 pin SSOP
chip form
8
ENA
PIN OUT
( Unit : mm )
4.40
6.40 0.30
8.00
8.20
0.17 0.20
0 10
ORDERING INFOMATION
Device
SM8140AM
CF8140A
Package
14pin SSOP
Chip in tray
0.35 0.10
1.00
0.10 0.10
0.625 0.20
NIPPON PRECISION CIRCUITS—1
NPC [ NIPPON PRECISION CIRCUITS INC ]
