DESCRIPTION
The STA530 is a BASH® power amplifier where BASH® means “High Efficiency”.
In fact its permits to build a BASH® architecture amplifier adding only few external components and a variable Buck regulator tracking the audio signal. Notice that normally only one Buck regulator is used to supply a multichannel amplifiers system , therefore most of the functions implemented in the circuit have a summing output pin.
The circuit contains all the blocks to build a configurable four channel amplifier.

■ MONOCHIP BRIDGE QUAD CONFIGURABLE AMPLIFIER OPTIMIZED FOR BASH® ARCHITECTURE
■ 4 X 50W OUTPUT POWER @ RL = 8 Ω, THD = 10% or (2 x 50W @ 8 Ω + 1 x 100W @ 4Ω) or (2 x 100W @ 4 Ω)
■ PRECISION RECTIFIERS TO DRIVE THE BUCK REGULATOR
■ ON-OFF SEQUENCE/ TIMER WITH MUTE AND STANDBY
■ PROPORTIONAL OVER POWER OUTPUT CURRENT TO LIMIT THE BUCK REGULATOR
■ ABSOLUTE POWER BRIDGE OUTPUT TRANSISTOR POWER PROTECTION
■ ABSOLUTE OUTPUT CURRENT LIMIT
■ INTEGRATED THERMAL PROTECTION
■ POWER SUPPLY OVER VOLTAGE PROTECTION
■ FLEXIWATT POWER PACKAGE WITH 27 PIN
■ BASH® LICENCE REQUIRED