- 29 -
IC BLOCK DIAGRAM & DESCRIPTION
1
2
3
4
5
Description
DC INPUT
ON/OFF CONTROL
DC OUTPUT
OUTPUT VOLTAGE ADJUSTMENT
GND
1
2
3
4
5
Symbols
Vin
Vc
Vo
Vadj
Pin No.
IC494 PQ070XZ01Z(Regulator)
1
2
5
3
4
DC INPUT(Vin)
ON/OFF
CONTROL (Vc)
DC OUTPUT(Vo)
OUTPUT
VOLTAGE
ADJUST (Vadj)
EXCLUSIVE IC
IC495 PQ2L2182MS (Regulator)
3
1
5
4
2
CONTROL
IC806 74VHCT08AMTCX (Quad 2-input and Gate)
1
14
A
0
2
B
0
3
O
0
4
A
1
5
B
1
6
O
1
7
GND
13 A
2
12 B
2
11 O
2
10 A
3
9 B
3
8 O
3
V
CC
A
L
L
H
H
B
L
H
L
H
Pin Names
A
n'
B
N
O
N
Description
Inputs
Outputs
O
L
L
L
H
IC859 NC7SZ157P6 (UHS 2-Input Non-Inverting Multiplexer)
I
1
GND
I
0
1
2
3
6
5
4
S
Z
Vcc
Connection Diagram
(Top View)
1
0
Pin Name
I
0
, I
1
S
Z
Description
Data Inputs
Control Inputs
Output
Pin Descriptions