TB2912HQ Toshiba, TB2912HQ Datasheet - Page 9

• Manufacturer Part Number: TB2912HQ
• Manufacturer: Toshiba

Specifications of TB2912HQ

• No. Of Channels: 4
• Package: HZIP 25-P-1.00F
• Recommended Vcc (v): 13.2
• Rl=2 Ohm: 70W x 4
• Rl=4 Ohm: 43W x 4
• Rl=8 Ohm: -
• Features/built-in Functions: 4 BTL channels, standby switch, mute, BiCD process, I2C self-diagnosis, tweeter diagnostics, low standby current
• Operating Voltage (v): 9 to 18

Pin10
ripple
voltage
WRITE DATA
WRITE DATA
(2)
diagnostic
Set the
Pin10
ripple
voltage
Description for turn on diagnosis
D6 set at 1, is sent at the same time
data permitted time, as below Figure:
l
Turn On diagnostic
acquisition time (80 ms typ.)
This IC can determine whether the conditions listed below occur or not at turn ON:
-Short to GND
-Short to V
-Output to output short
-Speaker open
As first “switch on”, the write data is sent to “turn ON” the IC.
If the turn on diagnostic is activated at this time, the write data, with the diagnostic cycle byte: IB1
The result of self diagnosis can be obtained from the read data sent after the turn on diagnostic
Figure 5 Number of Times Turn ON Diagnosis Timing Chart
READ DATA
CC
Turn On diagnostic
acquisition time
(80 ms typ.)
Figure 4 Diagnosis Timing Chart
Turn On diagnostic DATA
permitted time
READ DATA
Turn On diagnostic
between On and Off time
(100 ms typ.)
9
READ DATA
To become standby off
(turning or power ON)
WRITE DATA
Permanent diagnostic
enable
Permanent diagnostic
DATA permitted time
FAULT
event
TB2912HQ
2006-04-28
READ DATA