TB2922HQ Toshiba, TB2922HQ Datasheet - Page 5

• Manufacturer Part Number: TB2922HQ
• Manufacturer: Toshiba

Specifications of TB2922HQ

• No. Of Channels: 2
• Package: HZIP12-P-1.78B
• Recommended Vcc (v): 18
• Rl=2 Ohm: -
• Rl=4 Ohm: -
• Rl=8 Ohm: 72W x 2
• Features/built-in Functions: 2 BTL channels, muting function, thermal shutdown, output short protection, BiCD MOS process
• Operating Voltage (v): 9 to 26 (8ohm) / 9 to 18 (4ohm)

4. Pop Noise Suppression
5. External Component Constants
Component
Name
C1
C2
C3
C4
C5
time constant of C4.
signal is applied to C4 to when the muting function is turned ON/OFF will be longer.
The pop noise which is generated when the muting function is turned ON/OFF will vary according to the
The greater the capacitance, the lower the pop noise. Note that the time from when the mute control
Recommended
3900 µF
0.22 µF
0.1 µF
Value
10 µF
1 µF
To eliminate DC
To reduce ripple
To provide
sufficient
oscillation margin
To reduce pop
noise
Ripple filter
Purpose
Cut-off frequency is
increased
Powering ON/OFF is faster
Reduces noise and provides sufficient oscillation margin
High pop noise. Duration until
muting function is turned
ON/OFF is short
Power supply ripple filtering
Lower than recommended
5
value
Effect
Cut-off frequency is reduced
Powering ON/OFF takes
longer
Low pop noise. Duration until
muting function is turned
ON/OFF is long
Higher than recommended
value
TB2922HQ
2005-12-20