Concept
We are committed to zero defects when it comes to our 4-channel power amplifier ICs. Toshiba exerts its unique high-reliability and high-voltage design technology to implement strict production control. Additionally, Toshiba has continually improved its 4-channel power amplifier ICs to reduce noise and tune high-frequency performance to enhance sound quality.The latest addition to our product portfolio is an eco-friendly class-KB amp with self-diagnostic capabilities. Toshiba also offers one-of-a-kind products featuring low ON-resistance made with a new BiCD process, new packages and etc.
Roadmap
Toshiba is expanding its portfolio of 4-channel power amplifier ICs that combine a set of its state-of-the-art proprietary core technologies.
Power Dissipation Comparisons Between Class-AB and Class-KB Amps
Toshiba's proprietary high-efficiency class-KB amp helps reduce heat dissipation, compared to general class-AB amps. The class-KB amp also helps reduce power loss even in large-amplitude mode.
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Calculation conditions
- Amp use: 4 hours per day; 365 days per year
- Amp's audio output power: 2 W
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Life cycle assessment (LCA) calculation conditions
- Overall gasoline-to-amp energy conversion efficiency: 18.9%
- Gasoline-to-power conversion factor: 0.104 L/kWh
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Product Lineup
| Part Number | Max Output
VCC = 15.2V | Max Output
VCC = 14.4 V | Class | Voltage Gain | I2C Bus | Output DC Offset Det. | Clipping Det. | Short-Circuit Det. | High-Side Switch | Half-Short Detection | Speaker Burning Prevention | 2-Ω Load |
| TB2921AHQ |
51W |
45W |
AB |
26dB |
|
Y |
|
|
Y |
|
|
Y |
| TB2926HQ |
49W |
43W |
AB |
26dB |
|
Y |
|
Y |
|
Y |
Y |
|
| TB2936HQ |
49W |
43W |
AB |
34dB |
|
Y |
Y |
|
|
Y |
Y |
|
| TB2946HQ |
49W |
43W |
AB |
26dB |
|
|
|
|
|
Y |
|
Y |
| TB2932HQ |
49W |
43W |
AB |
26dB |
Y |
Y (I2C) |
Y (I2C) |
Y (I2C) |
|
Y (I2C) |
|
Y |
| TB2933HQ |
49W |
43W |
AB |
34dB |
Y |
Y (I2C) |
Y (I2C) |
Y (I2C) |
|
Y (I2C) |
|
Y |
| TB2915HQ |
49W |
43W |
KB |
26dB |
|
Y |
|
Y |
|
|
|
Y |
| TB2929HQ |
45W |
41W |
AB |
26dB |
|
|
|
|
|
|
Y |
|
| TB2939HQ |
45W |
41W |
AB |
26dB |
|
Y |
|
Y |
|
|
Y |
|
Y: Available
Y (I2C): Supported via the I2C interface
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