10W CAR RADIO AUDIO AMPLIFIER
The TDA 2003 has improved performance with the same pin configuration as the TDA 2002.
The additional features of TDA 2002, very low number of external components, ease of assembly,
space and cost saving, are maintained.
The device provides a high output current capability (up to 3.5A) very low harmonic and cross-over
distortion.
Completely safe operation […]

PULSE-WIDTH-MODULATION CONTROL CIRCUITS
 FEATURES
· Complete PWM Power-Control Circuitry
· Uncommitted Outputs for 200-mA Sink or Source Current
· Output Control Selects Single-Ended or Push-Pull Operation
· Internal Circuitry Prohibits Double Pulse at Either Output
· Variable Dead Time Provides Control Over Total Range
· Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance
· Circuit Architecture Allows Easy

NPN General Purpose Amplifier
This device is designed as a general purpose amplifier and switch.
The useful dynamic range extends to 100 mA as a switch and to
100 MHz as an amplifier.
 2N3904 / MMBT3904 / PZT3904
 
 2N3904 datasheet