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Toshiba Launches Power Amplifier for Car Audio with Strong Resistance to Power Surges

September 25, 2018

Toshiba Electronic Devices & Storage Corporation

TCB503HQ

TOKYO-Toshiba Electronic Devices & Storage Corporation has launched a new 4-channel power amplifier for car audio, "TCB503HQ” that delivers strong resistance to power surges. Sample shipments start today with mass production scheduled to begin in the first quarter of 2019.

Building on Toshiba’s proven development capabilities in ICs for car audio, the new product achieves a higher reliability with an analog fine process resistant to power surges. It also supports 6V operations suitable for vehicles equipped with idling reduction systems, which have become popular in recent years. This feature suppresses popping sounds that occur when power voltage fluctuates.

Other features include a built-in filter to improve resistance to extraneous high-frequency noise, and to prevent generation of abnormal noise even when there is high-frequency noise from mobile phone radio waves and adjustment of door mirrors.

Using the clip detection signal to control the volume and tone control circuit, the sound quality of the set can be improved.

Main specifications

Part number TCB503HQ
Maximum output 50Wx4ch (Vcc=15.2V,RL=4Ω, JEITA max)
Supply voltage 6V to 18V
Output offset voltage 70mV
Output noise voltage 45uV (BW=A-weight)
Functions and features
  • High output power and low distortion
  • Built-in mute and standby functions, offset detection, short circuit detection, and output clip detection
  • 6V operations (engine idling reduction capability)
  • Built-in protection circuits (overheat, overvoltage, short to the power supply, short to the ground, and load shorted)
Package HZIP25-P-1.00F
Sample price
(tax included)
500 yen
For further information about the new product, please visit:

TCB503HQ

Customer Inquiries

Mixed Signal IC Sales and Marketing Department

Tel: +81-44-548-2876

contuct us

Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.