sm8145a Nippon Precision Circuits Inc, (NPC), sm8145a Datasheet - Page 2

• Manufacturer Part Number: sm8145a
• Description: El Driver
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

BLOCK DIAGRAM
PIN DESCRIPTION
1. Built-in pull-down resistor.
Pin number
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
OUTCOM
Name
OCL1
OCL2
OCL3
ENA2
ENA1
OUT2
OUT1
OCE
VDD
CHV
LDR
VSS
NC
NC
NC
NC
NC
NC
NC
V
IC
I/O
Ip
Ip
O
O
O
O
–
–
–
–
–
–
–
–
–
I
I
I
I
I
1
1
OCL1
V
BOOST
VDD
Booster coil driver output
No connection (must be open)
Ground
No connection (must be open)
Coil driver oscillator 1 (oscillator frequency determined by external resistor)
Coil driver oscillator 2 (oscillator frequency determined by external resistor)
No connection (must be open)
Coil driver oscillator 3 (oscillator frequency determined by external resistor)
EL driver oscillator (oscillator frequency determined by external resistor)
Enable input 2 (HIGH: enable, LOW: disable)
Enable input 1 (HIGH: enable, LOW: disable)
No connection (must be open)
Supply
No connection (must be open)
Output 2
Output (common)
No connection (must be open)
Output 1
No connection (must be open)
High-voltage DC input
R
OCL2
OCL1
Oscillator
Divider
R
OCL3
OCL2
LDR
SM8145A
R
OCL3
CHV
ENA1
Control logic
High Voltage Switching Circuit
OUT1
ENA2
EL 1
Function
OCE
OUTCOM
Oscillator
Divider
EL 2
R
OCE
SEIKO NPC CORPORATION —2
OUT2
VSS