TPA3138D2 Texas instruments

TPA3138D2

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TPA3138D2

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Описание

The TPA3138D2 is a 10-W/ch, high-efficiency, low-idle-current Class-D stereo audio amplifier. It can drive stereo speakers with a load as low as 3.2-Ω. In the 1SPW mode, it consumes a low idle current of only 21-mA (12-V) and can operate down to 3.5-V, allowing for longer audio play and improved thermal performance in bluetooth speakers, battery-powered appliances and other power-sensitive applications. Advanced EMI Suppression with 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 TPA3138D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, overtemperature, as well as DC speaker protection. All of these protections come with automatic recovery.Customers can leverage every TPA3138D2 feature in existing designs as it is fully pin-to-pin compatible to TIs TPA3110D2, TPA3136D2 and TPA3136AD2.

Wide Supply Range 3.5-V to 14.4-V
- 2 × 10 W into 6-Ω, 1% THD+N, 12-V Supply
- 1 x 18.5 W into 4-Ω, 10% THD+N, 12-V Supply
- THD+N : 0.04% at 1 W, 1 kHz input, 6-Ω
Longer Battery Life for Portable Applications:
- 20-mA (12-V) Idle Current in 1SPW Mode
- >90% Class-D Efficiency
Reduced Solution Size and Cost:
- Inductor-Free Operation
- EN55013 and EN55022 EMC Compliant When No Inductors are Used
- No External Heatsink Required
Flexible Audio Solution:
- Single-ended or Differential Analog Inputs
- Selectable Gain: 20 dB and 26 dB
- Pop and Click-Free Startup
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
Pin-to-Pin Compatible with TPA3110D2, TPA3136D2 and TPA3136AD2

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)	-40 to 85