AN8819NFB Datasheet, PDF (9/11 Pages) Panasonic Semiconductor – 4Ch. Linear Driver IC DC-DC Converter Control for CD

ICs for CD/CD-ROM Player
s Pin Description (Cont.)
Pin No. Symbol I/O
Pin Description
38 CLK
38
Clock input pin, used to synchro-
I nize the triangular wave oscillation
with clock.
AN8819NFB
Equivalent Circuit
50kΩ
20kΩ
50kΩ
160kΩ
41 CT
Triangular wave oscillation pin.
Oscillation frequency determined
O by external R and C.
41
Recommendable values : 470kΩ,
390pF
PVCC
60kΩ
34 TB
O
Transistor base pin for controlling
the driver supply voltage PWM
34
42 PWMG
Gain adjustment pin for controlling
the driver supply voltage PWM
DRVCC
42
43
APC switching comparator output
43 COMP0
O _pin
44 COMP1
I
APC switching comparator input
pin
SVCC
44
1kΩ