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Product Detailed Parameters
- Description：IC AMP CLASS AB QUAD 87W 37DBS
- Series：-
- Mfr：NXP USA Inc.
- Package：Tube
- Type：Class AB
- Output Type：4-Channel (Quad)
- Max Output Power x Channels @ Load：87W x 4 @ 2Ohm
- Voltage - Supply：8V ~ 18V
- Features：I2C, Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Through Hole
- Supplier Device Package：37-PDBS
- Package / Case：37-SSIP Formed Leads
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TDA8588BJ/N3,112 is an I²C-bus controlled quad audio power amplifier and multiple voltage regulator. It features four amplifiers configured in Bridge Tied Load (BTL) to drive front and rear speakers. The device includes five voltage regulators, two power switches, and comprehensive diagnostic capabilities via the I²C interface. Operating supply voltages range from 8 V to 18 V. Maximum output power reaches 87 W into a 2 Ω load at 14.4 V. Quiescent current is typically 270 mA, dropping to 150 μA in standby mode with only Regulator 2 active.
Feature Summary
- I²C-bus control for amplifier configuration, diagnostics, and regulator voltage selection
- Integrated multiple voltage regulators with backup functionality for microcontroller supply retention
- Comprehensive protection including thermal clipping, short-circuit detection, and low battery monitoring
- Diagnostic output indicating clipping, thermal warnings, and load status
Applications
- Car radio boost amplifiers
- CD/MD player power stages
- Vehicle audio system integration
Procurement Notes
Verify component authenticity through authorized NXP channels due to obsolete status. Confirm package integrity as DBSP-37. Ensure design compatibility with existing I²C bus protocols. Review datasheet for specific electrical limits regarding load dump and thermal conditions before implementation.
Selection Notes
Select this part for applications requiring integrated amplification and regulated power supplies in automotive environments. The BJ variant provides fixed 3.3 V outputs for Regulators 2 and 3. Consider the BTL configuration requirements and I²C addressability when designing the host microcontroller interface.
Part Context
This component belongs to the TDA8588 family of automotive audio solutions. It combines high-power amplification with system management functions. The device utilizes BCDMOS technology for efficient operation within vehicle electrical systems, serving as a central hub for audio output and peripheral power distribution.
Replacement Considerations
TDA8588AJ/N3,112
FAQ
What is the function of the backup capacitor connected to pin BUCAP?
It stores energy to maintain the Regulator 2 output voltage during brief periods when the main battery supply is absent, allowing the microcontroller time to prepare for voltage loss.
How does the device handle thermal overload?
It activates soft thermal clipping to reduce output power. If temperature continues to rise, all channels mute, and eventually all regulators and switches disable except Regulator 2.
