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Номер произв TB2938HQ
Описание Maximum Power 49W BTL x 4-ch Audio Power IC
Производители Toshiba
логотип Toshiba логотип 



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TB2938HQ Даташит, Описание, Даташиты
Bi-CMOS Linear Integrated Circuit Silicon Monolithic
TB2938HQ
TB2938HQ
Maximum Power 49W BTL 4-ch Audio Power IC
1. Description
The TB2938HQ is a four-channel BTL power amplifier for car
audio applications.
This IC has a pure complementary P-ch and N-ch DMOS output
stage, offering maximum output power (POUT MAX) of 49W.
It includes a standby switch, mute function and various
protection features.
2. Applications
Power 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 3-1)
Built-in various detection function (Output DC offset detection, Output short, Output layer short) (pin25)
Built-in various mute functions (low voltage, standby on/off) (pin22)
Built-in standby switch (pin4)
Built-in mute switch (pin22)
Start stop Cruising corresponded (at Vcc=6V)
Built-in various protection circuits (thermal shut down, over-voltage, short to GND, short to VCC, and output to
output short, speaker current limiting)
Table 3-1 Typical Characteristics
(Note1,Note2)
Condition
Typ. Unit
Output power (POUT)
VCC = 15.2 V, JEITA max
49
VCC = 14.4 V, JEITA max
44
VCC = 14.4 V, THD = 10%
29
THD = 10%
24
W
Total harmonic distortion (THD)
POUT = 5 W
0.01 %
Output noise voltage (VNO) (Rg = 0 ),
BW = 20 Hz to 20 kHz
50 µV
Operating Supply voltage range (VCC)
RL = 4
6 to 18 V
Note1: Typical test conditions: VCC = 13.2 V, f = 1 kHz, RL = 4 , GV = 26 dB, Ta = 25°C; unless otherwise specified.
Note2: Rg: signal source resistance
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TB2938HQ Даташит, Описание, Даташиты
TB2938HQ
4. Block Diagram
10
Ripple
C1 11 IN1
16
TAB VCC2
20
VCC1
B
9 OUT1 ()
8 PW-GND1
OUT1 ()
7
RL
C1 12 IN2
13 Pre-GND
5 OUT2 ()
2 PW-GND2
3 OUT2 ()
RL
C1 15 IN3
C6
16 AC-GND
17 OUT3 ()
PW-GND3
18
OUT3 ()
19
RL
C1 14 IN4
5V
Play
Mute
R1
4 Stby
22 Mute
21 OUT4 ()
24 PW-GND4
23 OUT4 ()
RL
Det 25
Some of the functional blocks, circuits or constants may be omitted from the block diagram or simplified for
explanatory purposes.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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TB2938HQ Даташит, Описание, Даташиты
5. Pin Configuration and Function Descriptions
5.1 Pin Configuration (top view)
TB2938HQ
Det
Pw-GND4
OUT4()
Mute
OUT4()
Vcc
OUT3()
PW-GND3
OUT3()
AC-GND
IN3
IN4
PreGND
IN2
IN1
Ripple
OUT()
PW-GND1
OUT1()
Vcc2
OUT2()
Stby
OUT2()
PW-GND2
TAB
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