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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 TDA8588J/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 supports a 2 Ω load with up to 16 V battery voltage and a 4 Ω load with up to 18 V. Maximum output power reaches 87 W per channel at 2 Ω and 14.4 V supply. It includes five voltage regulators, two power switches, and comprehensive protection against short circuits, thermal overload, and load dumps.
Feature Summary
- I²C-bus control for independent amplifier configuration and diagnostic monitoring
- Integrated multiple voltage regulators with selectable outputs and backup functionality
- Comprehensive protection including soft thermal clipping and low headroom prevention
- DC and AC load detection capabilities for speaker integrity verification
Applications
- Boost amplifier and voltage regulator for car radios
- Power amplifier and regulator for CD/MD players
- Multi-channel audio systems requiring integrated microcontroller supply
Procurement Notes
Verify the specific suffix J indicates fixed 5 V outputs for Regulator 2 and Regulator 3. Confirm package type DBS37P matches design requirements. Check current availability status as automotive ICs may have limited stock or obsolescence risks. Ensure I²C bus compatibility with the target microcontroller logic levels.
Selection Notes
Select this component when a single IC solution is needed for both high-power audio amplification and system voltage regulation. The fixed 5 V outputs for Regulators 2 and 3 simplify microcontroller supply design by preventing overvoltage damage during I²C disturbances. Consider the 37-lead DBS package for thermal management and pin count requirements.
Part Context
This part belongs to the TDA8588 family of automotive audio power amplifiers. Variants like TDA8588AJ and TDA8588BJ differ primarily in the fixed output voltages of Regulator 2 and Regulator 3. The TDA8588J provides standard 5 V supplies for these critical digital sections, distinguishing it from lower-voltage variants.
Replacement Considerations
TDA8588AJ/N3,112
FAQ
How does the TDA8588 handle low battery voltage conditions?
It activates low headroom protection mode, which discharges capacitors on pins SVR and ACGND to increase headroom voltage and prevent audible noise during supply drops.
What is the function of the BUCAP pin?
The BUCAP pin connects to an external backup capacitor that supplies Regulator 2 during brief periods when the main battery voltage (VP) is absent, ensuring microcontroller memory retention.
