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Product Detailed Parameters
- Description：IC AMP AB QUAD 10W 15MULTIWATT
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Type：Class AB
- Output Type：4-Channel (Quad)
- Max Output Power x Channels @ Load：10W x 4 @ 2Ohm
- Voltage - Supply：8V ~ 18V
- Features：Depop, Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Through Hole
- Supplier Device Package：15-Multiwatt
- Package / Case：Multiwatt-15 (Vertical, Bent and Staggered Leads)
- Operating Temperature：-40°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
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Overview
The TDA7372B is a quad-channel Class AB audio power amplifier designed for car radio applications. It operates within an 8V to 18V supply range and delivers up to 6W per channel into 4Ω loads, or 10W typ into 2Ω loads at 14.4V with 10% THD. The device features internally fixed gain of 40dB, eliminating the need for bootstrap capacitors or external compensation. It includes standby and mute functions compatible with CMOS logic, ensuring no audible pop during transitions. Protection mechanisms cover short circuits, thermal overload, load dump, and reverse battery conditions.
Feature Summary
- Quad-channel single package design reducing electrical mismatch among channels
- Rail-to-rail output swing achieved without bootstrap capacitors
- Integrated soft thermal limiter and automatic shutdown protection
- Built-in diagnostics for AC/DC short circuits and fault detection
Applications
- Car radio high power applications
- Automotive audio boosters
- Multi-speaker vehicle sound systems
Procurement Notes
Verify component status as obsolete before procurement planning. Confirm availability through authorized distributors or secondary market suppliers. Ensure compatibility with existing Multiwatt-15 footprints. Review datasheet revisions for any parameter updates. Validate thermal management requirements against application constraints.
Selection Notes
Select this component for designs requiring four independent audio channels in a single package. Suitable for applications needing rail-to-rail swing without external bootstrap components. Ideal for automotive environments due to robust protection features including load dump and reverse battery handling. Consider thermal dissipation capabilities when designing heat sinks.
Part Context
Part of STMicroelectronics' TDA73xx series of automotive audio amplifiers. Designed to replace older discrete solutions by integrating multiple channels and protections. Utilizes fully complementary PNP/NPN output stages for efficient power delivery. Commonly found in legacy vehicle infotainment systems.
Replacement Considerations
No direct public substitute part numbers are confirmed in the provided documentation. Evaluate alternative quad-channel amplifiers from STMicroelectronics or other manufacturers based on pin compatibility and power specifications.
FAQ
Does the TDA7372B require bootstrap capacitors?
No, the TDA7372B delivers rail-to-rail output swing without the need for bootstrap capacitors.
What is the voltage gain of the TDA7372B?
The voltage gain is internally fixed at 40dB.
How does the TDA7372B handle thermal overload?
It employs a soft thermal limiter that transitions to mute status, followed by complete shutdown if temperatures remain excessive.
