LA4628

Features:

• Total output: 20 W + 20 W (at V_CC = 13.5 V, RL = 4 , THD = 10%)
• High-fidelity design (fL < 10 Hz, fH = 130 kHz)
• Extremely low impulse noise levels
• An arbitrary amplifier startup time can be set up with external components.
• Full complement of built-in protection circuits (includes circuits that protect against shorting to V_CC, shorting to ground, load shorting, overvoltages and excessive temperatures)




Specifications

Absolute maximum ratings
Power1 (THD=10%) [W]	20
Supply Voltage [V]	13.5
Load Resistance[]	4
Power2 (THD=10%) [W]	-
Supply Voltage [V]	-
Load Resistance[]	-
Power3 (THD=10%) [W]	-
Supply Voltage [V]	-
Load Resistance[]	-
channels	2
output method	BTL
Voltage gain [dB]	40

Parameter	Symbol	Conditions	Ratings	Unit
Maximum supply voltage	VCC max	No signal	24	V
Maximum output current	IO peak	Per channel	4	A
Allowable power dissipation	Pd max	With an arbitrarily large heat sink	32.5	W
Operating temperature	Topr		20 to +85
Storage temperature	Tstg		40 to +150

Description

The LA4628 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. LA4628 was designed for the best possible audio quality and features an extended low band roll-off frequency provided by a newly-developed NF circuit that does not require an external capacitor. Furthermore, crosstalk, which can cause muddiness in the audio output, has been significantly reduced by both circuit and wiring pattern improvements. Thus this amplifier can provide powerful lows and clear highs.

Note that LA4628 is pin compatible with the 13.5 W × 2-channel LA4625, and allows end products differentiated by their power rating to share the same printed circuit board.