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Product Detailed Parameters
- Description：IC AMP CLASS AB QUAD 49W 25HZIP
- Series：-
- Mfr：Toshiba Semiconductor and Storage
- Package：Tube
- Type：Class AB
- Output Type：4-Channel (Quad)
- Max Output Power x Channels @ Load：49W x 4 @ 4Ohm
- Voltage - Supply：6V ~ 18V
- Features：Mute, Short-Circuit and Thermal Protection, Shutdown
- Mounting Type：Through Hole
- Supplier Device Package：25-HZIP
- Package / Case：25-SIP Formed Leads
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TB2941HQ is a Bi-CMOS linear integrated circuit featuring four-channel BTL audio power amplification. It utilizes pure complementary P-ch and N-ch DMOS output stages to deliver maximum output power of 49 W at VCC = 15.2 V with THD = 10% and RL = 4 Ohms. The device operates within a supply voltage range of 6 V to 18 V for 4 Ohm loads, or 6 V to 16 V for 2 Ohm loads. Total harmonic distortion is typically 0.006% at 4 W output. The package is HZIP-25, weighing approximately 7.7 g.
Feature Summary
- Built-in high-side switch functionality controlled by mute terminal voltage.
- Integrated output offset voltage detection to prevent speaker damage.
- Comprehensive protection circuits including thermal shutdown, over-voltage, and short-circuit protection.
- Low voltage operation technology to minimize audible pop noise and sound cutting.
Applications
- Car audio applications
- Power amplifier ICs for automotive systems
Procurement Notes
Verify component authenticity through official Toshiba Semiconductor and Storage channels. Confirm the specific datasheet revision matches design requirements. Ensure proper thermal management is implemented as the device generates significant heat during operation. Check RoHS compliance status before integration into final products.
Selection Notes
Select this component for designs requiring four-channel BTL amplification in automotive environments. Evaluate thermal dissipation capabilities against expected load conditions. Verify that external components like capacitors meet leakage current specifications to maintain stability. Consider the standby and mute control interfaces for system integration.
Part Context
This part belongs to the TB2941 series of audio power amplifiers manufactured by Toshiba. It is designed specifically for high-power applications using DMOS technology. The device integrates multiple control features to simplify system design and enhance reliability in demanding automotive environments.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Consult Toshiba sales representatives for potential alternatives if this component is discontinued or unavailable.
FAQ
How does the TB2941HQ handle low supply voltage conditions?
The device employs MPC/DFA technology to switch output voltages from Vcc/2 to Vcc/4 when headroom is suppressed. This reduces audible pop noise and sound cutting while maintaining voltage gain.
What triggers the thermal shutdown function?
Thermal shutdown activates when the junction temperature exceeds 150°C. It first attenuates outputs, then mutes all channels, and finally shuts down if temperatures continue to rise.
