LA4743B.pdf | | Ordering number : ENN6630
Monolithic Linear IC
LA4743B
45 W Four-Channel (Bridge Circuit) Power Amplifier
Overview
The LA4743B is a 45 W 4-channel power amplifier IC for car stereo systems. It features a built-in bridge circuit and the ability to radically reduce the number of external components required. It is also pin compatible with the LA4743A, which differs in the amount of gain provided.
Package Dimensions
unit: mm 3236-HZIP25
[LA4743B]
29.2 25.6 4.5
Features
· Maximum output power: 45 W × 4 channels (VCC = 14.4 V, 4 load, 1 kHz) · 40 W × 4 channels (VCC = 13.7 V, 4 load, 1 kHz) · Requires only seven external components and does not require an oscillation prevention RC circuit, a noise filter, or a BS capacitor.
R1.7 14.4 17.4 3.3 10.2
0.4 4.0 4.0
2.60 2.0
(1.0) 2.0
0.53
Functions
· Muting function · Built-in standby switch · Full complement of built-in protection circuits, including protection from shorting to VCC, shorting to ground, load shorting, overvoltages, a |