The TB2944FG is an audio output IC that employs the highly efficient class D
method, developed for TV and home audio applications. The TB2944FG
eliminates the need for heatsink (Note), thus allowing the design of an end
product with a small footprint. It also incorporates a range of features, such
as standby and muting, as well as different protective circuits.
Target Markets
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Class D technology uses PWM modulation techniques.
Benefits include:
- Good linearity.
- High power efficiency, typically 90%.
- Minimal board space requirements.
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Features include:
- Device protection circuit for thermal and short circuit issues.
- Master/slave operation for up to 6 channels.
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No heat sink required.
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Toshiba Product Line-Up
- TB2944FG; 18W*2ch, Single-Ended, Vcc 24V typ.
- TB2924AFG; 20W*2ch, BTL, Vcc 11-18V typ.
TB2944FG Class D, 18 W × 2-channel (SEPP) Low-Frequency Power Amplifier IC
Features
- Output: POUT = 10 W × 2ch (typ.) SEPP VCC = 24 V, RL = 8 Ω, THD = 10%, f
= 1 kHz
- High efficiency: When output is 10 W, η = 90% (VCC = 24 V, RL = 8 Ω)
- Distortion: 0.1% (1 W output, f = 1 kHz)
- Gain: 34dB (typ.)/28dB
- 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.) to 400 kHz
- Operating supply voltage range: VCC (opr) = 10 V to 25.5 V (Topr = 20°C
to 75°C)
- Protective circuits: Thermal shutdown, load-short protection
Further Information
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