tb2936hq TOSHIBA Semiconductor CORPORATION, tb2936hq Datasheet - Page 5
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tb2936hq
Manufacturer Part Number
tb2936hq
Description
49 W ? 4-ch Btl Audio Power Ic
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TB2936HQ.pdf
(20 pages)
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V
ref
3. DC Offset Detection
Voltage at (A)
Voltage at (B)
(LPF output)
Elec. vol
Amp output
The purpose of the integrated DC offset detector is to avoid an anomalous DC offset on the outputs,
produced by the input capacitor due to leakage current or short-circuit.
(pin 25)
GND
GND
GND
Leakage current
or short-circuit
V
ref/2
R
S1
Figure 5 DC Offset Detection Mechanism
V
bias
+
−
R
25
S2
5
A
V
5 V
LPF
B
Positive DC offset (+)
(caused by R
V
Negative DC offset (−)
(caused by R
The microcontroller shuts down the
system if the output is lower than
the specified voltage.
CC
To a microcontroller
/2 (normal DC voltage)
Time
Time
Time
OUT(+)
S1
S2
OUT(-)
V
Offset detection
threshold voltage
CC
)
)
TB2936HQ
/2
2009-02-04
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