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LA4625 Datasheet

2-channel 13.5W BTL Audio Power Amplifier

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Ordering number : EN6631A
LA4625
Monolithic Linear IC
2-channel 13.5W BTL Audio Power
Amplifier
http://onsemi.com
Overview
The LA4625 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 20W×2-channel LA4628, and allows end products differentiated by
their power rating to share the same printed circuit board.
Features
Total output : 13.5W+13.5W (at VCC = 12V, RL = 4Ω, THD = 10%)
PMPO reference data : 115W×2 (VCC = 20V, RL = 4Ω)
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
Storage temperature
Symbol
VCC max
IO peak
Pd max
Topr
Tstg
Conditions
No signal
Per channel
With an arbitrarily large heat sink
Ratings
24
3.5
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.6631-1/8


  ON Semiconductor Electronic Components Datasheet  

LA4625 Datasheet

2-channel 13.5W BTL Audio Power Amplifier

No Preview Available !

LA4625
Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Recommended supply voltage
VCC
Recommended load resistance range
RL op
Allowable operating supply voltage
VCC op
Note : With VCC, RL, and the output level in ranges such that the Pd max for the heat sink used is not exceeded.
Ratings
12
4 to 8
7.2 to 20
Unit
V
Ω
V
Electrical Characteristics at Ta = 25°C, VCC = 12V, RL = 4Ω, f = 1kHz, Rg = 600Ω
Parameter
Quiescent current
Standby mode current drain
Voltage gain
Total harmonic distortion
Output power
Output offset voltage
Output noise voltage
Ripple rejection ratio
Channel separation
Input resistance
Standby pin applied voltage
Symbol
ICCO
Ist
VG
THD
PO1
VN offset
VNO
SVRR
CHsep
Ri
VST
Conditions
Rg = 0
Standby mode (amplifier off), with no power
supply capacitor.
VO = 0dBm
PO = 1W, Filter = FLAT
THD = 10%
Rg = 0
Rg = 0, BPF = 20Hz to 20kHz
Rg = 0, VR = 0dBm, fR = 100Hz
Rg = 10kΩ, VO = 0dBm
Amplifier on
(applied through an external 10kΩ resistor)
min
65
38
10
-300
40
50
21
2.5
Ratings
typ
120
10
40
0.06
13.5
0.1
50
60
30
max
240
60
42
0.2
+300
0.5
39
VCC
Unit
mA
µA
dB
%
W
mV
mV
dB
dB
kΩ
V
Package Dimensions
unit : mm (typ)
3113B
Pd max -- Ta
35 Infinite heat sink
32.5
AI heat sink Mounting
torque 39N • cm Flat
30 washer Silicone grease
25 θf = 3˚C/W
applied
20.83 θf = 4˚C/W
20
θjc = 2˚C/W
15
13.9
θf = 7˚C/W
10.4 θf = 10˚C/W
10
5
3.1
Νο Fin
0
-20 0 20 40 60 80 100 120 140 160
Ambient temperature, Ta -- ˚C
No.6631-2/8


Part Number LA4625
Description 2-channel 13.5W BTL Audio Power Amplifier
Maker ON Semiconductor
Total Page 8 Pages
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