41812 SY 20120203-S00005 No.A2051-1/7

http://onsemi.com

Semiconductor Components Industries, LLC, 2013

May, 2013

LA4631VC

Overview

The LA4631VC built-in a 2 channel single-ended output power amplifier that a power supply voltage range is wide and

has additionally the standby function to reduce the current drain. It is a power amplifier IC suitable for driving speaker

of various audio system equipments, which is especially useful for products that use batteries.

Functions

• Output power = 4.5W (typical)

(VCC = 12V, RL = 3Ω, THD+N = 10%)

• Built in standby function (Pin5)

• Built in thermal suht down circuit

Specifications

Maximum Ratings

at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VCC max

With no input signal

24

V

Maximum output current

IO peak

Per channel

2.5

A

Allowable power dissipation

Pd max

With an infinitely large heat sink

25

W

Operating temperature

Topr

-20 to +75

°C

Storage temperature

Tstg

-40 to +150

°C

Operating Conditions

at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Recommended supply voltage

VCC

12

V

Recommended load resistance range

RL op

3 to 8

Ω

Allowable

operating

supply voltage

range

VCC op

5.5 to 22

V

*: VCC, RL, and output level such that Pd max, is not exceeded for the size of heat sink used.

Ordering number : ENA2051

Monolithic Linear IC

2-Channel SE AF Power Amplifier

for Home Audio Use

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating

Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.