24 W BTL or 2 x 12 W stereo car radio power amplifier

General Description:

The TDA1515BQ is a monolithic integrated class-B output amplifier in a 13-lead single in-line (SIL) plastic power package. The device is primarily developed for car radio applications, and also to drive low-impedance loads (down to 1,6 Ω). At a supply voltage VP = 14,4 V, an output power of 24 W can be delivered into a 4 Ω BTL (Bridge Tied Load), or, when used as stereo amplifier, it delivers 2 × 12 W into 2 Ω or 2 × 7 W into 4 Ω.

Features:

flexibility in use − mono BTL as well as stereo
high output power
low offset voltage at the output (important for BTL)
large usable gain variation
very good ripple rejection
internal limited bandwidth for high frequencies
low stand-by current possibility (typ. 1 µA), to simplify required switches; TTL drive possible
low number and small sized external components
high reliability.
he following currently required protections are incorporated in the circuit. These protections also have positive influence
on reliability in the applications.
load dump protection
a.c. and d.c. short-circuit safe to ground up to VP = 18 V
thermal protection
speaker protection in bridge configuration
SOAR protection
outputs short-circuit safe to ground in BTL
reverse polarity safe.

Circuit Diagram:

Circuit diagram for 24 W BTL or 2 x 12 W stereo car radio power amplifier

Datasheet for TDA1515BQ

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