The PAM8403DR-H is a high-performance Class-D stereo audio power amplifier manufactured by Diodes Incorporated. Belonging to the PAM8403 series, this integrated circuit provides two audio output channels, each capable of delivering approximately 3W into a 4Ω speaker load at a 5V supply and 10% total harmonic distortion.
Designed for portable and space-constrained audio applications, the PAM8403DR-H features an advanced filterless output architecture that allows speakers to be driven without conventional external LC output filters under suitable operating conditions. This design helps reduce external component count, simplify PCB layouts, and lower system costs.
The amplifier operates over a supply voltage range of 2.5V to 5.5V, making it suitable for battery-powered devices and low-voltage audio systems. Its efficient Class-D architecture offers significantly better power efficiency than traditional Class-AB amplifiers, helping reduce heat generation and extend battery operating time.
The PAM8403DR-H integrates mute control, shutdown functionality, short-circuit protection, and thermal shutdown protection to support dependable audio operation.
Housed in a compact SOP-16 surface-mount package, this audio amplifier is suitable for portable speakers, notebook computers, LCD monitors, multimedia devices, and various consumer electronics applications.
Key Features:
- Manufacturer: Diodes Incorporated
- Part Number: PAM8403DR-H
- Product Series: PAM8403
- Product Category: Audio Amplifier ICs
- Amplifier Type: Class-D Audio Power Amplifier
- Number of Channels: 2 (Stereo)
- Output Power: 3W × 2 at 4Ω, 5V, 10% THD
- Supply Voltage Range: 2.5V to 5.5V
- Typical Efficiency: 87% at 8Ω (Specified Conditions)
- Signal-to-Noise Ratio (SNR): 80dB Typical
- Typical THD+N: 0.15% at 1W, 8Ω, 5V
- Maximum Closed-Loop Gain: 24dB
- Typical Switching Frequency: 260kHz
- Typical Quiescent Current: 16mA at 5V (No Load)
- Shutdown Current: Less Than 1µA Typical
- Output Architecture: Filterless Differential Output
- Mute Function: Supported
- Shutdown Function: Supported
- Protection Features: Short-Circuit and Thermal Protection
- Operating Temperature Range: -40°C to +85°C
- Package: SOP-16 (SOIC-16)
- Number of Pins: 16
- Mounting Type: Surface Mount (SMD/SMT)
- Packaging: Tape and Reel
- Standard Reel Quantity: 2,500 Pieces
- RoHS Compliance: RoHS Compliant
- Product Status: Not Recommended for New Designs (NRND)
Typical Applications:
- Portable Bluetooth and multimedia speakers
- Notebook and laptop computers
- LCD monitors and TV projectors
- Portable DVD players
- Handheld gaming devices
- Mobile phone speaker systems
- Battery-powered audio equipment
- Consumer electronic audio modules
The Diodes Incorporated PAM8403DR-H combines efficient Class-D amplification, stereo audio output, compact packaging, and integrated circuit protection to provide a practical solution for low-voltage audio applications.
Its filterless output design, 3W-per-channel capability, and straightforward external circuitry make it suitable for maintaining existing audio products and supporting compatible electronic equipment designs.
Note: The PAM8403 family is not recommended for new designs. Please confirm stock availability, product lifecycle status, and compatible alternatives before ordering.
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