SM8142 Nippon Precision Circuits Inc, SM8142 Datasheet - Page 3

• Manufacturer Part Number: SM8142
• Description: EL Sheet Driver
• Manufacturer: Nippon Precision Circuits Inc

BLOCK DIAGRAM
I
PIN DESCRIPTION
1. Built-in pull-down resistor
V S O P - 8
SM8142A
1
2
3
4
5
6
7
8
Pin nu m b e r
S O N - 8
7
8
1
2
3
4
5
6
VDD
VSS
Boosting Voltage
Ver.
Dividing Circuit
A/B
A/B
A/B
A/B
A/B
A/B
A
B
A
B
Oscillator for
LDR
OCL
N a m e
CHV
O U T 2
O U T 1
C H V
O S C
O C E
V D D
L D R
V S S
O C L
E N A
Switching Circuit
Dividing Circuit
High Voltage
Oscillator for
EL Driving
OUT1
EL sheet
I / O
Ip
O
O
O
–
–
I
I
I
I
1
OCE
OUT2
High-voltage DC input
Booster coil driver output
Ground
Coil driver oscillator (oscillator frequency determined by external resistor)
Coil and EL driver oscillator
(oscillator frequency determined by external resistor)
EL driver oscillator (oscillator frequency determined by external resistor)
E n a ble input (HIGH: enable, LOW : disable)
Supply
Output 2
Output 1
SM8142
I
SM8142B
VDD
VSS
Function
NIPPON PRECISION CIRCUITS—3
Dividing Circuit
LDR
Boosting Voltage and EL Driving
OSC
CHV
Oscillator for
Switching Circuit
Dividing Circuit
High Voltage
OUT1
EL sheet
ENA
OUT2