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PDF TB2924AFG Data sheet ( Hoja de datos )
| Número de pieza | TB2924AFG | |
| Descripción | 20W X 2-Channel Low Frequency Power Amplifier IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TB2924AFG (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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TB2924AFG
TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic
TB2924AFG
Class D, 20 W × 2-channel (BTL) Low-Frequency Power Amplifier IC
The TB2924AFG is an audio output IC that employs the highly
efficient class D method, developed for TV and home audio
applications.
The TB2924AFG eliminates the need for heatsink(Note), thus
allowing the design of an end product with a small footprint. It
www.DataSheeta4lUs.ocoinmcorporates a range of features, such as standby and muting,
as well as different protective circuits.
Features
• Output: POUT = 13 W × 2ch (typ.) BTL
VCC = 12 V, RL = 4 Ω, THD = 10%, f = 1 kHz
POUT = 7.5 W × 2ch (typ.) BTL
VCC = 12 V, RL = 8 Ω, THD = 10%, f = 1 kHz
POUT = 19.5 W × 2ch (typ.) BTL
VCC = 15 V, RL = 4 Ω, THD = 10%, f = 1 kHz
POUT = 21 W × 2ch (typ.) BTL
VCC = 20 V, RL = 8 Ω, THD = 10%, f = 1 kHz
Weight: 0.85 g (typ.)
• High efficiency: When output is 10 W η = 88% (VCC = 15 V, RL = 8 Ω)
• Distortion: 0.1% (1 W output, f = 1 kHz)
• Gain: 34dB (typ.)
• Small flat package: HSOP36-P-450-0.65
• Muting/standby features
• Thermal AGC features
• Master and slave oscillation frequencies
• Oscillation frequency: fsw = 200 kHz (typ.)
• Operating supply voltage range (4 Ω): VCC (opr) = 11 V to 18 V (Topr = 0°C to 75°C),
VCC (opr) = 11.4 V to 18 V (Topr = −20°C to 75°C)
• Operating supply voltage range (8 Ω): VCC (opr) = 11 V to 20 V (Topr = 0°C to 75°C),
VCC (opr) = 11.4 V to 20 V (Topr = −20°C to 75°C)
• Protective circuits: thermal shutdown, short-circuit protection (load)
These protection functions are intended to avoid some output short circuits or other abnormal conditions
temporarily.
These protect functions do not warrant to prevent the IC from being damaged.
In case of the product would be operated with exceeded guaranteed operating ranges, these protection features
may not operate and some output short circuits may result in the IC being damaged.
The TB2924AFG does not contain protection circuitry for shorts against VCC and ground. Extra cares, such as
incerting fuses, should be exercised when output pins serve as line output or adjacent pins are shorted together
on the board.
Note: Generally, the average power of the audio signal constitutes only one-fifth to one-tenth of the maximum output
power, and in practice, will not exceed the permissible loss. However, care should be exercised so that it will
not be really exceeded, considering the board’s thermal resistance, ambient temperature, average output
power and so forth. Toshiba has verified that the TB2924AFG works properly without a heatsink on the
Toshiba PC board for up to 10-watt by 2-channel output typical (VCC = 15 V, RL = 8 Ω, THD = 10%, f = 1 kHz)
with a sine-wave input.
• This product are sensitive to electrostatic discharge. When handling this product, protect the environment to avoid
electrostatic discharge.(MM: ±200 V OK, HBM: ±1500 V OK)
• Install the product correctly. Otherwise, it may result in break down, damage and/or degradation to the product or
equipment.
1 2007-01-26
1 page  
TB2924AFG
5. Reduction of Pop Noise Generated when Turning on and Off the Power Supply
• To reduce pop noise, it is recommended to enable muting by setting pin 17 (mute switch) to logic low
before turning on or off the power supply or standby mode.
When turning on or off the standby mode (When the power supply is not turned on or off)
Mute Pin
www.DataSheet4U.com
Standby Pin
Turn on or off the standby mode after turning on muting.
When the power supply is off
Mute Pin
Standby Pin
Power Supply Pin
Turn off the power supply after turning on muting.
Don’t turn off the standby mode before turning off the power supply.
When the power supply is on
Mute Pin
Standby Pin
Turn on the power supply after turning on muting.
Timing charts may be simplified for explanatory purpose.
6. Board Mounting Consideration
The switching of the TB2924AFG is controlled with a rectangular-wave signal of approximately
200 kHz (typical). It is recommended to place the TB2924AFG far from the tuner portion, etc. that might
be affected.
5 2007-01-26
5 Page 
DATAs for Reference (Typ.)
50
30 VCC = 15 V
RL = 8 Ω
100: to 30 k
10
1 k: 400 to 30 k
5 10k: 400 to
3 +30 kHz LPF
THD – POUT_f
OUT2_10 k
1 OUT1_10 k
0.5
0.3
OUT1_1 k
OUT2_1 k
0.1
0.05
www.DataSheet4U.com0.03
OUT1_100
0.01
0.01 0.03 0.1
0.3
OUT2_100
1 3 10 30 100
POUT (W)
THD – f
50
30 VCC = 15 V
RL = 8 Ω
10 POUT = 1 W
Filtr: to 30 k (f = 20~800)
5 400 to 30 k (f = 1 k to 2 k)
3 400 to 80 k (f = 4 k to 6 k)
400 to (f = 8 k to 40 k)
1 +30 kHz LPF
0.5 OUT2
0.3
0.1
0.05
0.03
OUT1
0.01
10
100 1000
f (Hz)
10000
100000
TB2924AFG
THD – POUT_VCC
50
30 f = 1 kHz
RL = 8 Ω
10 1 k: 400 to 30 k
5 +30 kHz LPF
3
1
0.5
OUT1_15 V
0.3
OUT1_12 V
0.1
0.05
0.03 OUT2_15 V
OUT2_12 V
0.01
0.01 0.03 0.1 0.3
1
3
POUT (W)
10 30 100
POUT_VCC
25
f = 1 kHz
RL = 8 Ω
THD = 10%
20 Analyzer filter:
400 Hz to 30 kHz
Output: 30 k LPF
15
OUT1
OUT2
10
5
0
0 5 10 15 20
VCC (V)
η – POUT
100
80
60
40
20
VCC = 15 V
f = 1 kHz
RL = 8 Ω
0
0 2 4 6 8 10 12 14 16
POUT (W)
5
VCC = 15 V
f = 1 kHz
RL = 8 Ω
4
PD – POUT
3
2
1
0
0 2 4 6 8 10 12
POUT (W)
11 2007-01-26
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TB2924AFG.PDF ] | |
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