LM4873LQX National Semiconductor, LM4873LQX Datasheet - Page 5

• Manufacturer Part Number: LM4873LQX
• Description: IC AMP AUDIO PWR 3W STER 24LLP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4873LQX

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 3W x 2 @ 3 Ohm; 440mW x 2 @ 8 Ohm
• Voltage - Supply: 2 V ~ 5.5 V
• Features: Depop, Input Multiplexer, Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 24-LLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM4873LQX

THD+N
PSRR
X
SNR
V
P
THD+N
PSRR
X
SNR
Symbol
Symbol
TALK
OS
O
TALK
Electrical Characteristics for Bridged-Mode Operation
The following specifications apply for V
Electrical Characteristics for Single-Ended Operation
Note 3: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device operates within the Operating Ratings. Specifications are not guaranteed for parameters where
no limit is given. The typical value however, is a good indication of device performance.
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
Information section or the Absolute Maximum Ratings section.
Note 5: Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 6: Machine model, 220 pF–240 pF discharged through all pins.
Note 7: The given θ
Note 8: The given θ
Note 9: The given θ
Note 10: The given θ
Note 11: The given θ
Note 12: The given θ
Note 13: The given θ
Note 14: The θ
Note 15: All voltages are measured with respect to the ground (GND) pins, unless otherwise specified.
Note 16: Typicals are specified at 25˚C and represent the parametric norm.
Note 17: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
The following specifications apply for V
Output Offset Voltage
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Channel Separation
Signal To Noise Ratio
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Channel Separation
Signal To Noise Ratio
JA
is specified for an LM4873 packaged in a BLA20AAB or TLA20AAA with their four ground connections soldered to a 3in
JA
JA
JA
JA
JA
JA
JA
is for an LM4873 packaged in an MXA20A with the Exposed-DAP soldered to an exposed 2in
is for an LM4873 packaged in an MXA20A with the Exposed-DAP soldered to an exposed 1in
is for an LM4873 packaged in an MXA20A with the Exposed-DAP not soldered to printed circuit board copper.
is for an LM4873 packaged in an MXA28A with the Exposed-DAP soldered to an exposed 2in
is for an LM4873 packaged in an MXA28A with the Exposed-DAP soldered to an exposed 1in
is for an LM4873 packaged in an MXA28A with the Exposed-DAP not soldered to printed circuit board copper.
is for an LM4873 packaged in an LQA24A with the Exposed-DAP soldered to an exposed 2in
Parameter
Parameter
DMAX
= (T
JMAX
− T
DD
DD
= 5V unless otherwise specified. Limits apply for T
A
= 5V unless otherwise specified. Limits apply for T
V
THD+N = 0.5%, f = 1 kHz, R
THD+N = 1%, f = 1 kHz, R
THD+N = 10%, f = 1 kHz, R
A
R
C
f = 1kHz
f = 1kHz, C
V
)/θ
THD+N = 10%, f = 1kHz (Note 20)
THD+N = 1%, f = 1kHz, R
20Hz ≤ f ≤ 20kHz, A
V
C
f = 1kHz, C
V
IN
V
DD
L
B
JA
DD
B
DD
= −1, P
= 32Ω
. For the LM4873, T
= 1.0µF, V
= 0V
= 1.0µF
= 5V, P
LM4873MTE-1, R
LM4873LQ, R
LM4873MTE-1, R
LM4873LQ, R
LM4873, R
LM4873MTE-1, R
LM4873LQ, R
LM4873, R
= 5V, V
= 5V, P
O
B
B
O
= 75mW, 20Hz ≤ f ≤ 20kHz,
RIPPLE
O
= 1.0µF
RIPPLE
= 1.0µF
= 340mW, R
= 1.1W, R
L
L
= 8Ω
= 8Ω, P
Conditions
Conditions
L
L
L
5
JMAX
= 200mV
= 3Ω
= 4Ω
= 4Ω, P
VD
= 200mV
L
L
L
= 2
= 150˚C. For the θ
= 3Ω
= 4Ω
= 4Ω, P
L
O
L
= 8Ω
L
L
= 1W
O
L
= 8Ω
= 32Ω
= 8Ω
L
RMS
= 8Ω
= 2W
= 32Ω
RMS
O
, R
= 2W
,
L
JMAX
= 8Ω,
JA
, θ
s for different packages, please see the Application
JA
, and the ambient temperature T
(Notes 3, 15)
(Notes 3, 15) (Continued)
2
2
A
2
A
2
2
= 25˚C.
area of 1oz printed circuit board copper.
area of 1oz printed circuit board copper.
(Note 16) (Note 17)
= 25˚C.
area of 1oz printed circuit board copper.
area of 1oz printed circuit board copper.
Typical
area of 1oz printed circuit board copper.
(Note 16)
Typical
0.34
3.0
3.0
2.6
2.6
1.5
0.3
0.3
67
80
97
340
440
0.2
85
52
60
94
5
LM4873
LM4873
(Note 17)
Limit
2
Limit
, 1oz copper plane.
50
75
A
. The maximum
www.national.com
(Limits)
mV (max)
mW (min)
Units
(Limits)
dB
dB
dB
W
W
W
W
W
W
%
Units
mW
mW
dB
dB
dB
%