SM8144B Datasheet, PDF (1/6 Pages) Nippon Precision Circuits Inc – EL Sheet Driver

NIPPON PRECISION CIRCUITS INC.
SM8144B
EL Sheet Driver
OVERVIEW
The SM8144B is a transformer-less electroluminescent (EL) driver IC, capable of driving displays up to 80
cm² in size. It is a high-efficiency driver that features revised coil switching transistor ON resistance and output
circuit configuration to reduce loss, all in a compact package.
A microcontroller interface pin (ENA) is provided, which can be used to control the EL driver ON/OFF func-
tion. The device is available in 8-pin VSOP packages.
FEATURES
s Dedicated EL driver
s 1.6 to 5.5 V supply voltage
s 100mA maximum operating current
(V_DD = 3.0V, Ta ≤ 70°C)
s 3.5Ω typical output resistance
s 200 Vp-p maximum EL driver voltage*
s 31 to 1500 Hz EL drive frequency range*
s High voltage CMOS Process
s 8-pin VSOP plastic package
*: Adjustable with external resistance.
PINOUT
(Top view)
CHV 1
8 OUT1
LDR 2
7 OUT2
VSS 3 _8144BV 6 VDD
OSC 4
5 ENA
APPLICATIONS
s Hand held PC, Palm size PC
s Mobile IT equipment
s White EL
ORDERING INFORMATION
PACKAGE DIMENSIONS
(Unit : mm)
0 to 10
Device
SM8144BV
Package
8-pin VSOP
0.575 typ
3.1 ± 0.3
0.15
+0.1
−0.05
0.65
0.10
0.22 ± 0.1 _{0.12 M}
NIPPON PRECISION CIRCUITS—1