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ON Semiconductor - 20W 2-Channel BTL Power Amplifier

Numéro de référence LA4628
Description 20W 2-Channel BTL Power Amplifier
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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LA4628 fiche technique
Ordering number : EN6632A
LA4628
Monolithic Linear IC
20W 2-Channel BTL Power Amplifier
for General Audio
http://onsemi.com
Overview
The LA4628 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. It 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 this device is pin compatible with the 13.5W×2-channel LA4625, and allows end products differentiated by
their power rating to share the same printed circuit board.
Features
Total output : 20W+20W (at VCC = 13.5V, RL = 4Ω, THD = 10%)
High-fidelity design (fL < 10Hz, fH = 130kHz)
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 VCC, shorting to
ground, load shorting, overvoltages and excessive temperatures)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum output current
Allowable power dissipation
Operating temperature
Symbol
VCC max
IO peak
Pd max
Topr
Storage temperature
Tstg
Conditions
No signal
Per channel
With an arbitrarily large heat sink
Ratings
24
4
32.5
-20 to +85
-40 to +150
Unit
V
A
W
°C
°C
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.
Semiconductor Components Industries, LLC, 2013
May, 2013
O0808 MS JK/92900RM(OT) No.6632-1/8

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