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Номер произв TB2941HQ
Описание Maximum Power 49W BTL x 4ch Audio Power Amp IC
Производители Toshiiba
логотип Toshiiba логотип 



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TB2941HQ Даташит, Описание, Даташиты
Bi-CMOS Linear Integrated Circuit Silicon Monolithic
TB2941HQ
Maximum Power 49 W BTL × 4ch Audio Power Amp IC
TB2941HQ
1. Description
The TB2941HQ is a power IC with built-in four-channel BTL
amplifier developed for car audio application. The maximum
output power POUT is 49 W using a pure complementary P-ch and
N-ch DMOS output stage.
In addition, a standby switch, a mute function, output offset
voltage detector, high-side switch and various protection features
are included.
2. Applications
Power Amp IC developed for car audio applications.
Weight: 7.7 g (typ.)
3. Features
High output power, low distortion, and low noise property (for details, refer to the Table 1 Typical
Characteristics).
Built-in high-side switches. (Pin25) (Note2)
Built-in detecting output offset voltage. (Pin1,Pin25) (Note2)
Built-in muting function. (Pin22)
Built-in auto muting functions (for low Vcc and stand-by
sequence)
Built-in stand-by switch. (Pin4)
Table 1 Typical Characteristics
(Note1)
Test condition
Typ. Unit
Built-in various protection circuits (thermal shut down,
over-voltage, short to VCC, short to GND, and output to output
short)
Output power (POUT)
VCC = 15.2 V, JEITA max
49
VCC = 13.7 V, JEITA max
40
THD = 10%
24
W
Output power (POUT) (RL = 2 Ω)
VCC = 13.7 V, JEITA max
THD = 10%
73
45
W
Total harmonic distortion (THD)
POUT = 4 W
0.006
%
Output noise voltage (VNO) (Rg = 0 Ω)
Filter : DIN AUDIO
65 µVrms
Note1:
Operating Supply voltage range (VCC)
RL = 4 Ω
RL = 2 Ω
6 to 18
6 to 16
V
Typical test conditions: VCC = 13.2 V, f = 1 kHz, RL = 4 Ω, Ta = 25°C; unless otherwise specified.
Rg: signal source resistance
Note2:
Pin25 functions are selected by mute terminal (pin 22) voltage.
1
2015-07-22









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TB2941HQ Даташит, Описание, Даташиты
4. Block Diagram
TB2941HQ
10
Ripple
11
C1: 0.22 μF IN1
6
VCC2
20
VCC1
MPC
DFA
C1: 0.22 μF IN2
12
AC-GND
13 Pre-GND
MPC
C1: 0.22 μF IN3
15
AC-GND
C6: 1 μF
16 AC-GND
MPC
C1: 0.22 μF IN4
14
AC-GND
DFA
DFA
5V
Play
Mute
4 Stby
R1: 47 kΩ
22 Mute
AC-GND
MPC
DFA
H-SW / Offset Det
Offset Det
+B
OUT1 (+)
9
PW-GND1
8 RL
OUT1 ()
7
OUT2 (+)
5
PW-GND2
2 RL
OUT2 ()
3
OUT3 (+)
17
PW-GND3
18
RL
OUT3 ()
19
OUT4 (+)
21
PW-GND4
24 RL
23 OUT4 ()
25
1
Some of the functional blocks, circuits or constants labels in the block diagram may have been omitted or simplified
for clarity.
In the following explanation, a "channel" is a circuit which consists of INx, OUTx (+), OUTx (-), and PW-GNDx. (x:1
to 4)
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TB2941HQ Даташит, Описание, Даташиты
5. Pin Configuration and Function Descriptions
5.1 Pin Configuration (top view)
TB2941HQ
H-SW/OffsetDet
PW-GND4
OUT4()
MUTE
OUT4()
VCC1
OUT3()
PW-GND3
OUT3()
AC-GND
IN3
IN4
Pre-GND
IN2
IN1
Ripple
OUT1()
PW-GND1
OUT1()
VCC2
OUT2()
Stby
OUT2()
PW-GND2
Offset Det
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