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Product Detailed Parameters
- Description：IC AMP CLASS AB MONO 700MW 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：700mW x 1 @ 8Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Short-Circuit and Thermal Protection, Shutdown
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TPA301DRG4 is a mono audio power amplifier in an 8-pin SOIC package. It operates on a supply voltage range of 2.5 V to 5.5 V. In bridge-tied load (BTL) configuration, it delivers 350 mW into an 8-ohm load at 5 V and 250 mW at 3.3 V. The device features ultra-low shutdown quiescent current of 0.15 µA. It includes thermal and short-circuit protection.
Feature Summary
- Bridge-tied load architecture eliminates external output coupling capacitors
- Ultra-low quiescent current in shutdown mode for power-sensitive applications
- Integrated thermal and short-circuit protection mechanisms
Applications
- Low-voltage portable equipment with internal speakers
- Cellular communications systems
- Battery-powered narrowband audio devices
Procurement Notes
Verify the specific suffix 'RG4' against the manufacturer's official documentation to confirm compliance details and material specifications. Ensure the ordering part number matches the required tape-and-reel packaging format for surface-mount assembly processes.
Selection Notes
Select this component for designs requiring BTL drive without output capacitors. Consider the 8-SOIC package for standard PCB layouts. Evaluate thermal dissipation requirements based on the expected average listening levels and dynamic headroom needs within the system.
Part Context
This part belongs to the TPA301 family of low-voltage audio amplifiers. It is designed specifically for applications where space and power efficiency are critical constraints. The family supports both SOIC and PowerPAD MSOP packages to accommodate different board size limitations.
Replacement Considerations
TPA301D
FAQ
How does the BTL configuration affect output power compared to single-ended?
The BTL configuration doubles the voltage swing across the load, effectively quadrupling the output power delivered from the same supply rail and load impedance compared to a ground-referenced single-ended setup.
What is the purpose of the BYPASS pin capacitor?
The BYPASS pin connects to an internal voltage divider providing mid-supply bias. A capacitor here determines the startup rate and reduces noise from the internal midrail generation circuit, improving PSRR and THD+N performance.
