TCB001FNG,EL

Overview

The TCB001FNG,EL is a four-channel BTL audio power IC developed for car audio applications by Toshiba Semiconductor and Storage. It utilizes a pure complementary P-ch and N-ch DMOS output stage to deliver a maximum output power of 45W at VDD = 15.2V (JEITA max). The device operates within a supply voltage range of 6V to 18V and supports engine idle reduction capability. Key electrical characteristics include a total harmonic distortion of 0.01% at 4W output and an output noise voltage of 45µVrms. It features built-in standby and mute functions, along with comprehensive protection circuits.

Feature Summary

• High output power with low distortion and low noise properties using a pure complementary DMOS output stage.
• Built-in various mute functions including automatic low-voltage mute and standby on/off control.
• Integrated self-diagnosis detection circuit for offset voltage, output short, and over-voltage conditions.
• Comprehensive protection circuits including thermal shutdown, over-voltage, short to GND/VDD, load short, and speaker damage prevention.

Applications

• Car audio power amplifiers
• In-vehicle entertainment systems

Procurement Notes

Verify the exact ordering suffix matches the required package variant. Confirm that the component is sourced from authorized distributors to ensure authenticity. Check the latest datasheet revision for any updates to pin configurations or electrical specifications before finalizing the design. Ensure compliance with automotive environmental standards if applicable to the specific end-use environment.

Selection Notes

Select this IC for applications requiring high channel count in a compact form factor. Consider the thermal resistance requirements when designing the PCB heat dissipation strategy. Evaluate the external component values for ripple filtering and mute timing constants to optimize pop noise performance. Ensure the microcontroller interface aligns with the standby and mute voltage thresholds specified in the datasheet.

Part Context

This component belongs to Toshiba's lineup of CDMOS linear integrated circuits designed specifically for automotive environments. It is part of a series of power ICs aimed at enhancing in-car audio system performance while reducing system complexity through integrated protection and control features. The device is manufactured using silicon monolithic technology optimized for high reliability in vehicle applications.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

FAQ

How does the TCB001FNG handle low voltage conditions?

The IC features an automatic mute function that activates when the supply voltage drops below approximately 5.5V. This prevents audible transient noise generated by low VDD levels during engine cranking or idle reduction scenarios.

What is the purpose of the DET pin?

The DET pin (Pin 29) serves as an open-drain output for self-diagnosis. It signals abnormal states such as DC offset voltage exceeding thresholds, output shorts to VDD/GND, or over-voltage conditions to the system controller.

How is speaker damage prevented?

The IC includes a protection circuit that monitors the DC resistance between output pins. If the impedance falls below 1Ω, indicating a potential layer short, the circuit limits the current draw to prevent excessive DC current from damaging the speaker.