LA4708N - ON Semiconductor

LA4708N 20W 2-channel BTL AF Power Amplifier

of External Components C1, C4 C2 C3 C5 Input capacitors Decoupling capacitor (ripple filter) Amplifier on time setting capacitor Power supply capacitor 2.2F is recommended. fL can be varied by C1, C4 capacitances to adjust the bass range. Approximately 0.8 second for 33F. Since the on time is proportional to this capacitance, it can be set as desired by.

Features

on-chip protectors and standby switch. Features
 High power : supports total output of 30W  30W (VCC = 13.2V, THD = 30%, RL = 4)
 Supports RL = 2 (PO = 30W when VCC = 13.2V, THD = 10%)
 Designed for excellent sound quality (fL  10Hz, fH = 130kHz)
 NF capacitor-less
 Any on time settable by external capacitor
 Less pop noise
 Standby switch circuit on chip (microprocessor supported)
 Various protectors on chip (output-to-ground short/output-to-VCC short/load short/overvoltage/thermal shutdown circuit) Specifications Maximum Ratings at Ta = 25C Parameter Symbol Conditions Max.