BLOCK DIAGRAM
TA8428K(S)/F/FG
TA8428K(S)
TA8428F/FG
PIN FUNCTION
PIN No.
K(S)
F/FG
1
8
2
9
3
15
4
Fin
5
16
6
Other pin
7
1, 3
SYMBOL
FUNCTIONAL DESCRIPTION
IN 1
IN 2
OUTA
GND
OUT A
N.C
VCC
TTL compatible control inputs.
(PNP type low active comparator inputs)
Output terminals and free wheeling diodes are connected
between each output to GND and VCC.
GND terminal
Output terminals and free wheeling diodes are connected
between each output to GND and VCC.
Non connection
Supply voltage terminal for control and motor drive.
TA8428K (S), TA8428F/FG has 2 build−in protective functions which work independently.
These circuit operations are as follows.
z Thermal shutdown (TSD)
If junction temperature of TA8428K (S), TA8428F/FG is over the specified temperature (150°C Typ.) by excess
power dissipation or abnormal ambient temperature change, thermal Shutdown circuit turn “ON” and output 4
transistors become High impedance. (All transistors turn “OFF”)
2
2007-6-4