Diodes Incorporated PAM8106TVR

Overview

PAM8106TVR from Diodes Incorporated is a 10W/CH stereo Class-D audio power amplifier with Spread-Spectrum Modulation (SSM) and Non-Clipping Power Limit (NCPL), operating from 4.5V to 15V supply, delivering ≤0.05% THD+N at 5W into 8Ω, ≥92% efficiency, and integrated short-circuit/thermal/UVLO/DC-input protection - deployed in flat-panel TV audio stages and multimedia speaker systems.

For engineers reviewing the PAM8106TVR datasheet, PAM8106TVR pinout, PAM8106TVR application, or PAM8106TVR equivalent, this page delivers verified functional role, validated pin-level circuit roles, confirmed thermal and EMI suppression behavior, and real-world alternative selection guidance for consumer audio power stage design.

Technical Context

The PAM8106TVR implements dual independent Class-D H-bridge outputs with NMOS-only topology requiring bootstrap capacitors (BSLP/BSLN, BSRP/BSRN) and internal VCLAMP regulation. Its differential input architecture supports both balanced and single-ended sources with 32dB closed-loop gain and <50mV output offset.

SSM operates via SSMCTL pin control (logic-low enables 300kHz ± spread), reducing radiated EMI without external LC filters; NCPL adjusts gain dynamically using PL pin voltage (1.2–2.5V sets 1.9–8.6W limit), while AVCC (4.5–15V), AVDD (5.2–5.7V), and V2P5 (2.5V) define three isolated supply domains.

Key Specifications

Pinout & Package

Package: W-QFN5050-32 (5.0mm × 5.0mm, 0.4mm pitch, exposed thermal pad soldered to PCB ground).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo Class-D audio amplifier applications.

Compared with PAM8106TVR, TAS5711PAG trades analog flexibility for digital integration and higher peak power but adds complexity; MAX9744ETA+ matches power rating but lacks NCPL, SSM, and thermal hysteresis - making PAM8106TVR superior for cost-sensitive, thermally constrained consumer audio where analog inputs and autonomous protection are essential.

Availability

PAM8106TVR is available at Aetrix Electronics and suitable for flat-panel display audio, multimedia speaker systems, DVD player audio stages, and portable boombox amplifiers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for PAM8106TVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.

The PAM8106TVR belongs to Diodes' PAM series of Class-D audio amplifiers, engineered specifically for high-efficiency, low-EMI consumer audio systems where thermal constraints, cost sensitivity, and autonomous protection are critical design drivers.

FAQ

What is the recommended bootstrap capacitor value for PAM8106TVR?

Each H-bridge channel requires two 220nF ceramic capacitors rated for ≥25V: one from LOUTP to BSLP and another from LOUTN to BSLN for the left channel; similarly, ROUTP→BSRP and ROUTN→BSRN for the right channel. For sub-100Hz applications, Diodes recommends upgrading to 1μF to ensure sufficient charge hold time during low-frequency duty cycles.

How does the NCPL function protect speakers in practice?

NCPL monitors output voltage swing and dynamically reduces amplifier gain before clipping occurs - for example, with a 2.35V PL pin voltage (set by 10kΩ/8.2kΩ divider), output power is limited to ~7.6W into 8Ω. This preserves waveform integrity during bass-heavy content, preventing thermal overload and mechanical excursion damage to tweeters and woofers without audible compression artifacts.

Can PAM8106TVR operate from a single-ended audio source?

Yes - connect the audio source to LINN (or RINN), AC-couple it with a capacitor matching the input network, and AC-ground LINP (or RINP) at the source side (not at the IC). This preserves common-mode rejection and avoids noise injection; the internal 2.5V V2P5 reference biases the unused input to optimal common-mode voltage, maintaining THD+N <0.05%.

What thermal pad connection is required for reliable operation?

The exposed thermal pad (Pin 33) must be soldered to a solid copper thermal land connected to PCB ground plane with ≥4 thermal vias (0.3mm diameter, spaced ≤1.5mm apart). Diodes specifies θJC = 5.0°C/W - failure to implement this results in junction temperature exceeding 150°C at >6W output, triggering thermal shutdown and compromising long-term reliability.