ta8251ahq TOSHIBA Semiconductor CORPORATION, ta8251ahq Datasheet - Page 4

• Manufacturer Part Number: ta8251ahq
• Description: Max Power 30w Btl ? 4ch Audio Power Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3. Preventive measure against oscillation
4. Junction temperature detecting pin(24)
For preventing the oscillation, it is advisable to use C
characteristic fluctuation of the temperature and the frequency.
The resistance R to be series applied to C
oscillation allowance.
(1) Capacity value and the kind of condenser
(2) Layout of printed board
Using temperature characteristic of a band gap circuit and in proportion to junction temperature, pin(24) DC
voltage: V
V
In deciding a heat sink size, a junction temperature can be easily
made clear by measuring voltage at this pin while a backside
temperature of IC was so far measured using a thermocouple type
thermometer.
2x
at T
T
j
(x
= x°C is decided by the following expression:
2
°
C)
rises at about +10mV / °C temperature characteristic. So, the relation between V
=
V
2x
10mV /
−
V
2
(25
°
C
°
C)
+
25
(
°
C)
4
is effective for phase correction of high frequency, and improves the
4
4
, the condenser of polyester film having small
2
TA8251AHQ
at T
2006-04-28
j
= 25°C and