TPA3139D2 Texas instruments

TPA3139D2

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TPA3139D2

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Описание

The TPA3139D2 is a 10-W stereo Class-D audio amplifier, featuring a fast turn-on time of <15 ms and mute function. It consumes low idle current of only 20-mA (12-V) and can operate down to 3.5-V, allowing for longer audio playback. Along with a small, 4 x 4 mm2 QFN package, the TPA3139D2 is optimized for 2-cell or 3-cell battery-powered systems with the space constraints. In addition, the Spread Spectrum Control enables the use of inexpensive ferrite bead filters while meeting EMC requirements for system cost reduction.To further simplify the design, the TPA3139D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, overtemperature, as well as DC speaker protection. All of these protections support automatic recovery.

2 × 3 W into 8-Ω, 1% THD+N, 7.4-V supply
2 × 10 W into 8-Ω, 1% THD+N, 13.5-V supply
Fast Turn-on time < 15 ms
Wide supply range 3.5-V to 14.4-V
Low idle current and small footprint for portable audio applications
- 4 x 4 mm2 QFN-24 package
- 20-mA (12-V) idle current with 1SPW modulation
- > 90% Class-D efficiency
Flexible audio solution:
- MUTE signal for fast enable and enable of outputs
- Single-ended or differential analog inputs
- Selectable gain: 20 dB and 26 dB
Integrated Protections and Auto Recovery:
- Pin-to-pin, pin-to-ground, and pin-to-power short circuit protection
- Thermal protection, undervoltage protection, and overvoltage protection
- Power limiter and DC speaker protection
Spread-spectrum modulation reduces EMI emission
Reduced solution size and cost:
- EN55022 EMC compliant with ferrite bead filters
- No external heatsink required

Audio input type	Analog Input
Architecture	Class-D
Speaker channels (max)	Stereo
Rating	Catalog
Power stage supply (max) (V)	14.4
Power stage supply (min) (V)	3.5
Load (min) (Ω)	3.2
Output power (W)	10
SNR (dB)	102
THD + N at 1 kHz (%)	0.04
Iq (typ) (mA)	20
Control interface	Hardware
Closed/open loop	Closed
Analog supply (min) (V)	3.5
Analog supply (max) (V)	14.4
PSRR (dB)	70
Operating temperature range (°C)	-10 to 85