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PDF TB2959HQ Data sheet ( Hoja de datos )
| Número de pieza | TB2959HQ | |
| Descripción | Maximum Power 47W BTL x 4-ch Audio Power IC | |
| Fabricantes | Toshiba Semiconductor | |
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TB2959HQ
Bi-CMOS Linear Integrated Circuit Silicon Monolithic
TB2959HQ
Maximum Power 47W BTL 4-ch Audio Power IC
1. Description
The TB2959HQ 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 47W.
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 1)
Build-in AUX-IN (pin25)
Built-in various mute functions (low voltage, standby on/off)
Built-in standby switch (pin4)
Built-in mute switch (pin22)
Built-in various protection circuits (thermal shut down, over-voltage, short to GND, short to VCC, and output to
output short)
Table1 typical Characteristics
(Note1,Note2)
Condition
Typ. Unit
Output power (POUT)
VCC = 15.2 V, JEITA max
47
VCC = 14.4 V, JEITA max
42
VCC = 14.4 V, THD = 10%
27
THD = 10%
23
W
Total harmonic distortion (THD)
POUT = 5 W
0.005 %
Output noise voltage (VNO) (Rg = 0 Ω),
BW = 20 Hz to 20 kHz
50 µV
Operating Supply voltage range (VCC)
RL = 4 Ω
6 to 18 V
Note1: Typical test conditions: VCC = 13.2 V, f = 1 kHz, RL = 4 Ω, GV = 26 dB, Ta = 25°C; unless otherwise specified.
Note2: Rg: signal source resistance
1 2011-11-08
1 page  
6. Detailed Description
TB2959HQ
Component
Name
Recomm
ended
Value
Pin
C1 0.22 μF INx(x:1 to 4)
C2
10 μF
Ripple
C3
0.1 μF
VCC1, VCC2
Purpose
To eliminate DC
To reduce ripple
To provide sufficient
oscillation margin
C4
1uF
Mute
To reduce pop noise
C5 3900 μF VCC1, VCC2
Ripple filter
C6
1 μF AC-GND
Common reference
voltage for all input
C7
0.22μF
AUX-IN To eliminate DC
R1
47kΩ
Mute
To reduce pop noise
Effect (Note4)
Lower than Recommended Value Higher than Recommended Value
Cut-off frequency becomes higher
Turn on/off time and turn-on diag.
cycle shorter
Cut-off frequency becomes lower
Turn on/off time and turn-on diag.
cycle longer
Reduces noise and provides sufficient oscillation margin
High pop noise. Duration until
mute function is turned on/off is
short.
Low pop noise. Duration until mute
function is turned on/off is long.
Power supply ripple filtering
Pop noise is suppressed when C1: C6 = 1:4. (Note5)
Cut-off frequency is increased in
AUX
High pop noise. Duration until
mute function is turned on/off is
short.
Cut-off frequency is reduced in
AUX.
Low pop noise. Duration until mute
function is turned on/off is long.
Note4: When the unrecommended value is used, please examine it enough by system evaluation.
Note5: Since “AC-GND” pin is a common reference voltage for all input, this product needs to set the ratio of an
input apacitance (C1) and the AC-GND capacitance (C6) to 1:4.
5 2011-11-08
5 Page 
Current into the speaker
Less than 4 A
TB2959HQ
The short-circuit protection is activated
Figure 7
About 1 4
Speaker Impedance
Prevention of speaker damage
Note 6: An abnormal DC offset voltage is incurred when the input bias to the power IC is lost due to a leakage
current from a coupling capacitor at the input or a short-circuit between the IN and adjacent lines.
11 2011-11-08
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet TB2959HQ.PDF ] | |
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