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4-Channel Car Audio Power Amplifier ICs
Enabling Technologies
Basic Concepts
- Improved sound quality due to the use of a new single-stage amplifier
- Lower noise
- Higher slew rate
- Improved treble frequency characteristics
- Zero-defect target
- Protection against wrong connections
Improved open-ground and short-to-ground
protection
Various self-diagnostic capabilities
→ Short-to-power, short-to-ground, output
short-circuit and DC offset protection
- High-reliability process and production control
High breakdown voltage
Screened for leakage current of the output power
MOS transistors
- Low-RonBiCD process
Roadmap
Product Offerings
BiCD Series
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TB2902HQ/
TB2912HQ/
TB2934HQ |
TB2904HQ/
TB2906HQ |
TB2901HQ/
TB2903HQ/
TB2913HQ |
TB2905HQ |
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(NOTE: datasheets
from semicon.toshiba.co.jp) |
|
Number of channels |
4 ch |
4 ch |
4 ch |
4 ch |
Operating supply voltage
(@RL = 4 Ω) *1 |
9 to 18 V |
9 to 18 V |
9 to 18 V |
9 to 18 V |
Maximum output power
(@VCC =
14.4 V) |
41 W |
43 W |
47 W |
47 W |
Maximum output power
(@VCC =
13.2 V) |
37 W |
39 W |
43 W |
43 W |
Output power
(@THD = 10%, VCC =
14.4 V) |
24 W |
26 W |
29 W |
29 W |
Output power
(@THD = 10%, VCC =
13.2 V) |
21 W |
23 W |
25 W |
25 W |
|
Voltage gain |
26 dB/
26 dB/
34 dB |
26 dB/
34 dB |
26 dB |
26 dB |
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Package |
SPP-25 |
SPP-25 |
SPP-25 |
SPP-25 |
|
Mute and standby switch |
Y |
Y |
Y |
Y |
Self-diagnosis
(Short-circuit detection) |
Y |
Y |
Y |
Y |
|
Clipping detection |
Y |
- |
- /
- /
Y |
- |
|
DC offset detection |
Y (I2C) |
Y |
- /
Y /
- |
Y |
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High-side switch |
- |
- |
Y /
- /
- |
- |
|
Half-short detection |
- |
- |
- |
- |
|
Overcurrent detection *2 |
- |
Y |
- |
- |
|
Remarks |
TB2912HQ: Low standby
current, 2-Ω load capable |
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Class KB |
Low-Ron BiCD Series
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TB2921HQ/
TB2923AHQ |
TB2926CHQ/
TB2936HQ |
TB2946HQ |
TB2932HQ |
|
(NOTE: datasheets
from semicon.toshiba.co.jp) |
|
Number of channels |
4 ch |
4 ch |
4 ch |
4 ch |
|
Operating supply voltage (@RL = 4 Ω) *1 |
8 to 18 V |
8 to 18 V |
8 to 18 V |
8 to 18 V |
Maximum output power
(@VCC =
14.4 V) |
47 W |
43 W |
43 W |
41 W |
Maximum output power
(@VCC =
13.2 V) |
43 W |
40 W |
40 W |
37 W |
Output power
(@THD = 10%, VCC =
14.4 V) |
29 W |
26 W |
26 W |
24 W |
Output power
(@THD = 10%, VCC =
13.2 V) |
25 W |
23 W |
23 W |
21 W |
|
Voltage gain |
26 dB |
26 dB/
34 dB |
26 dB |
26 dB |
|
Package |
SPP-25 |
SPP-25 |
SPP-25 |
SPP-25 |
|
Mute and standby switch |
Y |
Y |
Y |
Y (I2C) |
Self-diagnosis
(Short-circuit detection) |
Y |
Y |
Y |
Y |
|
Clipping detection |
- |
- |
Y |
Y |
|
DC offset detection |
Y |
Y |
Y |
Y (I2C) |
|
High-side switch |
- |
- |
- |
- |
|
Half-short detection |
- /
Y |
Y |
- |
- |
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Overcurrent detection *2 |
- |
Y |
- |
- |
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Remarks |
2-Ω load capable |
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2-Ω load capable |
Low standby current,
2-Ω load capable |
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fin = 1 kHz, RL = 4 Ω, Ta = 25°C, unless otherwise noted.
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*1: The operating supply voltage ranges of the 2-Ω
load-capable amplifiers are 9 to 16 V typical for the BiCD
Series and 8 to 16 V typical for the Low-Ron BiCD
Series.
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*2: Protects speakers from burning out due to overcurrent.
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