Sanyo EP93F manual LA4485, LA4425AC 5A

Monolithic Linear IC

Car Radio/Car Stereo 5 W Two-Channel Power Amplifier that Requires Minimal External Components

LA4485

Overview

The LA4485 obviates the need for the BS capacitor, noise filter capacitor, and oscillation prevention RC components previously required by power amplifier ICs by integrating them on the IC itself. The LA4485 requires only the barest minimum of external components and both dual and BTL type operation are supported in the power series ("stylish power").

Functions

■Dual: 5 W 2, BTL: 15 W

■Extremely few external components required: 4 or 5 in dual mode, 3 or 4 in BTL mode

■Built-in Each protection circuits

◆Overvoltage protection circuit

◆Thermal protection circuit

◆Output DC short protection circuit (with respect to both VCC and ground) ■ Circuit to handle application of +VCC to the outputs

■ Built-in impulse protection circuit ■ Standby mode switching function ■ Audio muting function

■ Package: SIP13H

Block Diagram

Monolithic Linear IC

Car Radio/Car Stereoereo 55 WW PowerPower AmplifierAmplifier thatthat RequiresRequires Minimal Externall ComponentsComponents

LA4425AC 5A

Overview

The LA4425A is a 5 W power amplifier IC for car radio and car stereo systems that requires an extremely small number of external components.

Functions

■The industry's first power amplifier that requires so few external components ◆ Provided in the industry's smallest package: SIP-5H (a TP126 type package) ◆ Only required 2 external components: input and output coupling capacitors only

■As a power IC, evaluation, adjustment, and investigation are essentially unnecessary This leads to simplified management

■Wide operating supply voltage range: 5 to 16 V

■Built-in Each protection circuits

◆Overvoltage protection circuit

◆Thermal protection circuit

◆Output DC short protection circuit ■ Built-in impulse protection circuit ■ Package: SIP5H

Block Diagram

Channel 1 input

Small signal system ground

BTL IN

Channel 2 input

Channel 1 output

Large signal system ground

Channel 2 output