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PDF TB2901H Data sheet ( Hoja de datos )
| Número de pieza | TB2901H | |
| Descripción | Maximum Power 47 W BTL x 4-ch Audio Power IC | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TB2901H (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic
TB2901H
Maximum Power 47 W BTL × 4-ch Audio Power IC
TB2901H
The TB2901H is 4-ch BTL audio amplifier for car audio
applications.
This IC can generate higher power: POUT MAX = 47 W as it
includes the pure complementary P-ch and N-ch DMOS output
stage.
It is designed to yield low distortion ratio for 4-ch BTL audio
power amplifier, built-in standby function, muting function, and
various kinds of protectors.
Additionally, high-side switch is built in.
Features
Weight: 7.7 g (typ.)
· High power output
: POUT MAX (1) = 47 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT MAX (2) = 43 W (typ.)
(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT MAX (3) = 80 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 2 Ω)
: POUT (1) = 29 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
: POUT (2) = 25 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
: POUT (3) = 55 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 2 Ω)
· Low distortion ratio: THD = 0.015% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω)
· Low noise: VNO = 90 µVrms (typ.)
(VCC = 13.2 V, Rg = 0 Ω, BW = 20 Hz~20 kHz, RL = 4 Ω)
· Built-in standby switch function (pin 4)
· Built-in muting function (pin 22)
· Built-in high-side switch function (pin 25)
· Built-in various protection circuits:
Thermal shut down, overvoltage, out to GND, out to VCC, out to out short
· Operating supply voltage: VCC (opr) = 9~18 V (RL = 4 Ω)
Note 1: Since this device’s pins have a low withstanding voltage, please handle it with care.
1 2002-11-06
1 page  
TB2901H
4. High-Side Switch
Pin 25 of this device is used in concerned with VCC as a high-side switch which operates with the standby
pin. Thus, both the power amp IC and the connected external unit (the hideaway unit) can be turned
ON/OFF by using of the standby switch.
5. Pop Noise Suppression
Since the AC-GND pin (pin 16) is used as the NF pin for all amps, the ratio between the input
capacitance (C1) and the AC-to-GND capacitance (C6) should be 1:4.
Also, if the power is turned OFF before the C1 and C6 batteries have been completely charged, pop noise
will be generated because of the DC input umbalance.
To counteract the noise, it is recommended that a longer charging time be used for C2 as well as for C1
and C6. Note that the time which audio output takes to start will be longer, since the C2 makes the muting
time (the time from when the power is turned ON to when audio output starts) is fix.
The pop noise which is generated when the muting function is turned ON/OFF will vary according to the
time constant of C4.
The greater the capacitance, the lower the pop noise. Note that the time from when the mute control
signal is applied to C4 to when the muting function is turned ON/OFF will be longer.
6. External Component Constants
Component Recommended
Name
Value
Purpose
Effect
Lower than recommended
value
Higher than recommended
value
Notes
C1
0.22 mF
To eliminate DC
Cut-off frequency is
increased
Pop noise is
Cut-off frequency is reduced generated when
VCC is ON
C2
10 mF
To reduce ripple
Powering ON/OFF is faster
Powering ON/OFF takes
longer
To provide
C3
0.1 mF
sufficient
Reduces noise and provides sufficient oscillation margin
oscillation margin
C4
1 mF
To reduce pop
noise
High pop noise. Duration until Low pop noise. Duration until
muting function is turned
muting function is turned
ON/OFF is short
ON/OFF is long
C5
3900 mF Ripple filter
Power supply ripple filtering
C6
1 mF
NF for all outputs Pop noise is suppressed when C1:C6 = 1:4
Pop noise is
generated when
VCC is ON
Note: If recommended value is not used.
5 2002-11-06
5 Page 
VIN – POUT (ch1)
40
1 kHz
100 Hz
30 10 kHz
20 f = 20 kHz
10 VCC = 13.2 V
RL = 4 W
No filter
0
0 2 4 6 8 10
Input voltage VIN (Vrms)
VIN – POUT (ch3)
40
1 kHz
100 Hz
30 10 kHz
f = 20 kHz
20
10 VCC = 13.2 V
RL = 4 W
No filter
0
0 2 4 6 8 10
Input voltage VIN (Vrms)
TB2901H
VIN – POUT (ch2)
40
1 kHz
100 Hz
30 10 kHz
20 f = 20 kHz
10 VCC = 13.2 V
RL = 4 W
No filter
0
0 2 4 6 8 10
Input voltage VIN (Vrms)
VIN – POUT (ch4)
40
1 kHz
100 Hz
30 10 kHz
f = 20 kHz
20
10 VCC = 13.2 V
RL = 4 W
No filter
0
0 2 4 6 8 10
Input voltage VIN (Vrms)
11 2002-11-06
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet TB2901H.PDF ] | |
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