TPA3138D2 Series
10-W stereo, 18.5-W mono, 3.5- to 14.4-V, analog input Class-D audio amplifier w/ inductor free
Manufacturer: Texas Instruments
Catalog
10-W stereo, 18.5-W mono, 3.5- to 14.4-V, analog input Class-D audio amplifier w/ inductor free
Key Features
• Wide Supply Range 3.5-V to 14.4-V2 × 10 W into 6-Ω, 1% THD+N, 12-V Supply1 x 18.5 W into 4-Ω, 10% THD+N, 12-V SupplyTHD+N : 0.04% at 1 W, 1 kHz input, 6-ΩLonger Battery Life for Portable Applications:20-mA (12-V) Idle Current in 1SPW Mode>90% Class-D EfficiencyReduced Solution Size and Cost:Inductor-Free OperationEN55013 and EN55022 EMC Compliant When No Inductors are UsedNo External Heatsink RequiredFlexible Audio Solution:Single-ended or Differential Analog InputsSelectable Gain: 20 dB and 26 dBPop and Click-Free StartupIntegrated Protections and Auto Recovery:Pin-to-pin, Pin-to-Ground, and Pin-to-Power Short Circuit ProtectionThermal Protection, Undervoltage Protection, and Overvoltage ProtectionPower Limiter and DC Speaker ProtectionPin-to-Pin Compatible with TPA3110D2, TPA3136D2 and TPA3136AD2Wide Supply Range 3.5-V to 14.4-V2 × 10 W into 6-Ω, 1% THD+N, 12-V Supply1 x 18.5 W into 4-Ω, 10% THD+N, 12-V SupplyTHD+N : 0.04% at 1 W, 1 kHz input, 6-ΩLonger Battery Life for Portable Applications:20-mA (12-V) Idle Current in 1SPW Mode>90% Class-D EfficiencyReduced Solution Size and Cost:Inductor-Free OperationEN55013 and EN55022 EMC Compliant When No Inductors are UsedNo External Heatsink RequiredFlexible Audio Solution:Single-ended or Differential Analog InputsSelectable Gain: 20 dB and 26 dBPop and Click-Free StartupIntegrated Protections and Auto Recovery:Pin-to-pin, Pin-to-Ground, and Pin-to-Power Short Circuit ProtectionThermal Protection, Undervoltage Protection, and Overvoltage ProtectionPower Limiter and DC Speaker ProtectionPin-to-Pin Compatible with TPA3110D2, TPA3136D2 and TPA3136AD2
Description
AI
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 TI’s TPA3110D2, TPA3136D2 and TPA3136AD2.
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 TI’s TPA3110D2, TPA3136D2 and TPA3136AD2.
