sm8142b Nippon Precision Circuits Inc, (NPC), sm8142b Datasheet - Page 3

• Manufacturer Part Number: sm8142b
• Description: El Driver
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

BLOCK DIAGRAM
I
PIN DESCRIPTION
1. Built-in pull-down resistor
VSOP-8
SM8142A
1
2
3
4
5
6
7
8
Pin number
SON-8
7
8
1
2
3
4
5
6
VDD
VSS
Boosting Voltage
Dividing Circuit
Oscillator for
Ver.
A/B
A/B
A/B
A/B
A/B
A/B
LDR
A
B
A
B
OCL
CHV
Name
OUT2
OUT1
CHV
OSC
OCE
VDD
LDR
VSS
OCL
ENA
Switching Circuit
Dividing Circuit
High Voltage
Oscillator for
EL Driving
OUT1
EL sheet
OCE
I/O
Ip
O
O
O
–
–
I
I
I
I
1
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)
Enable input (HIGH: enable, LOW: disable)
Supply
Output 2
Output 1
SM8142
I
SM8142B
VDD
VSS
Function
Dividing Circuit
LDR
Boosting Voltage and EL Driving
SEIKO NPC CORPORATION —3
OSC
CHV
Oscillator for
Switching Circuit
Dividing Circuit
High Voltage
OUT1
EL sheet
ENA
OUT2