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Product Detailed Parameters
- Description：IC AMP CLASS D STEREO 2.5W 16SOP
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：2-Channel (Stereo)
- Max Output Power x Channels @ Load：2.5W x 2 @ 4Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Depop, Short-Circuit and Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：16-SOP
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The PAM8003DR is a filterless Class-D stereo audio amplifier manufactured by Diodes Incorporated. It delivers 2.5W output power at 10% THD with a 5Ω load and 5V supply, or 2.2W at 1% THD with a 4Ω load. Operating on a 2.5V to 5.5V supply range, it features low quiescent current (typically 4.5mA at 5V) and high efficiency (up to 87%). The device includes a 64-step DC volume control, short circuit protection, thermal shutdown, and operates within -40°C to +85°C in an SO-16 package.
Feature Summary
- Filterless architecture allows direct speaker driving without low-pass output filters, reducing system cost and PCB area.
- Integrated 64-step DC volume control for precise gain adjustment.
- Built-in protection mechanisms including short circuit protection and thermal shutdown.
- Low electromagnetic interference (EMI) and superior low noise performance.
Applications
- LCD Monitors and TVs
- Notebook Computers
- Portable Speakers
- Portable DVD Players and Game Machines
Procurement Notes
Verify the specific ordering suffix DR indicates tape and reel packaging when sourcing components. Confirm compliance with RoHS 2 and lead-free requirements as specified in the manufacturer documentation. Ensure the SO-16 package dimensions match the target PCB layout constraints before finalizing procurement decisions.
Selection Notes
Select this component for portable applications requiring high efficiency and extended battery life compared to Class-AB amplifiers. Consider the 64-step digital volume control if hardware volume adjustment is preferred. Evaluate the need for external ferrite beads to suppress EMI in filterless configurations. Ensure the input signal amplitude remains within limits to prevent clipping-induced damage.
Part Context
The PAM8003 series represents a family of Class-D audio amplifiers designed for high-fidelity sound reproduction with minimal external components. The PAM8003DR variant specifically denotes the surface-mount version packaged in SO-16. This series targets consumer electronics where space savings and power efficiency are critical design parameters.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation.
FAQ
Does the PAM8003 require external low-pass output filters?
No, the PAM8003 utilizes a filterless architecture that allows it to drive speakers directly without the need for low-pass output filters.
How does the device handle over-temperature conditions?
The PAM8003 incorporates thermal shutdown protection that disables outputs when the junction temperature exceeds approximately 140°C. The device resumes normal operation once the temperature drops by 30°C.
What is the function of the VOLUME pin?
Pin 12 serves as the DC volume control input, allowing users to set the amplifier gain across 64 discrete steps.
