an8387s Panasonic Corporation of North America, an8387s Datasheet - Page 5

• Manufacturer Part Number: an8387s
• Description: 2-channel Linear Driver
• Manufacturer: Panasonic Corporation of North America

• Operational Description
describes the channel-1 driver.
• Block Diagram (Channel 1 driver)
An error signal (V
current absolute value circuit. The value of I
ICs for CD/CD-ROM Player
Pin No.
The AN8387S incorporates the two channels of drivers. Since both channels have the identical functions, the following
Supplementary Explanation
Pin Descriptions (Cont.)
13
14
17
18
R
1k
D2+
D2–
D1–
D1+
IN
Symbol
2
IN
4
) input to the pin2 is converted into the absolute value input current I
Error Amp.
–
+
V
ref
I/O
(=
O
O
O
O
V
S.W
ref
1
2
V
Shutdown
Direction
Decision
Thermal
CC
SW.A
SW.B
SW.C
)
DC Voltage
Absolute
Current
Circuit
Value
(2.7V)
(0.3V)
(0.3V)
(2.7V)
I
A
A
is as follows.
PC
3
A
SW.A
I
I
SW.B
SW.C
A
A
I
A
=0
–
+
SW.B
Equivalent Circuit
or
13
18
PV
57.6
R1
k
CC
14
17
Q1
or
Q3
–
17
PGND
(R
L
=8.2 )
A
18
through the error amplifier and
+
Q4
Q2
57.6
k
R2
Non-inverting output pin
for the channel-2 driver
Inverting output pin for the
channel-2 driver
Inverting output pin for the
channel-1 driver
Non-inverting output pin
for the channel-1 driver
SW. C
Description
19
20
VLIM
PV
AN8387S
CC