Product Summary

The LA4708 is a BTL two-channel power IC for car audio developed in pursuit of excellent sound quality. The device provides powerful bass and clear treble. In addition, the LA4708 features on-chip protectors and standby switch. The LA4708 is also pin-compatible with the LA4705NA (car stereo-use 17 W two-channel power IC), and can be substituted for the LA4705NA for higher power. (When the board is shared, pins 1 and 9 must be left open.). Low-region frequency characteristics have been improved through the use of a new NF capacitorless circuit, and crosstalk which causes "muddy" sound has been reduced by improving both circuit and pattern layout.

Parametrics

LA4708 absolute maximum ratings: (1)Maximum supply voltage:VCC max 1:24 V,VCC max 2:16 V; (2)Surge supply voltage VCC surge:50 V; (3)Maximum output current:4.5 A; (4)Allowable power dissipation:37.5 W; (5)Operating temperature:–35℃ to +85℃; (6)Storage temperature–40℃ to +150℃.

Features

LA4708 features: (1)High power: supports total output of 30 W + 30 W (VCC = 13.2 V, THD = 30%, RL =4Ω); (2)Supports RL =2Ω (PO = 30 W when VCC = 13.2 V,THD = 10%); (3)Designed for excellent sound quality(fL < 10 Hz, fH = 130 kHz); (4)NF capacitorless; (5)Any on time settable by external capacitor; (6)Less pop noise; (7)Standby switch circuit on chip (microprocessor supported); (8)Various protectors on chip(output-to-ground short/output-to-VCC short/load short/overvoltage/thermal shutdown circuit).

Diagrams

LA4708 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LA4708
LA4708
Other

Data Sheet
Negotiable 
LA4708N-E
LA4708N-E
ON Semiconductor
Audio Amplifiers CLASS-AB POWER AMPLIFIER
Data Sheet
0-1: $6.60
1-25: $6.10
25-100: $5.12
100-500: $4.78
LA4708NF
LA4708NF
Other

Data Sheet
Negotiable