SM8145A
NIPPON PRECISION CIRCUITS INC.
Dual EL Driver
OVERVIEW
The SM8145A is an Electro Luminescent (EL) driver IC that can drive two EL displays simultaneously.
Each EL display mode ON/OFF function can be separately controlled using two enable (ENA) pins.
The luminance in each display mode can be adjusted, enabling the luminance and consumption current to be
optimized to match the application. The device is supplied in ultra-small leadless QFN-20 packages, making
driver circuit miniaturization possible.
FEATURES
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PINOUT
(Top view)
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2 separate EL display drivers
2-display simultaneous driver operation
Adjustable luminance and current consumption in
each mode
3 display modes and a standby mode select control
pins (ENA1, ENA2)
1 to 30cm
2
EL display size per channel
1.6 to 5.5V supply voltage
200 Vp-p maximum EL driver voltage
20-pin QFN ultra-small leadless package
High voltage CMOS Process
15 14 13 12 11
OUTCOM
N.C.
OUT1
N.C.
CHV
OUT2
N.C.
VDD
N.C.
ENA1
16
17
18
19
20
8145A
1 2 3 4 5
10
9
8
7
6
ENA2
OCE
OCL3
N.C.
OCL2
APPLICATIONS
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Mobile phone
PDA, Handheld PC
Illumination accessory
ORDERING INFORMATION
D e vice
SM8145AB
P ackag e
20-pin QFN
PACKAGE DIMENSIONS
(Unit : mm)
Weight : 0.037g
4.20 ± 0.20
4.00 ± 0.10
15
16
11
10
4.20 ± 0.20
4.00 ± 0.10
20
6
1
0.50
5
LDR
N.C.
VSS
N.C.
OCL1
0.60 ± 0.10
+ 0.03
0.02
−
0.02
0.05
0.22 ± 0.05
0.05
M
NIPPON PRECISION CIRCUITS—1
1.00max
0.22
NPC [ NIPPON PRECISION CIRCUITS INC ]
