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LM4871 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No. de pieza LM4871
Descripción Electrónicos  3W Audio Power Amplifier with Shutdown Mode
Download  16 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4871 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
6.0V
Supply Temperature
−65˚C to +150˚C
Input Voltage
−0.3V to V
DD to +0.3V
Power Dissipation (Note 4)
Internally Limited
ESD Susceptibility (Note 5)
5000V
ESD Susceptibility (Note 6)
250V
Junction Temperature
150˚C
Soldering Information
Small Outline Package
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
θ
JC (typ) — M08A
35˚C/W
θ
JA (typ) — M08A
140˚C/W
θ
JC (typ) — N08E
37˚C/W
θ
JA (typ) — N08E
107˚C/W
θ
JC (typ) — MUA08A
56˚C/W
θ
JA (typ) — MUA08A
210˚C/W
θ
JC (typ) — LDC08A
4.3˚C/W
θ
JA (typ) — LDC08A
56˚C/W (Note 9)
Operating Ratings
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−40˚C
≤ T
A
≤ 85˚C
Supply Voltage
2.0V
≤ V
DD
≤ 5.5V
Electrical Characteristics(Notes 2, 3)
The following specifications apply for V
DD = 5V and RL =8
Ω unless otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4871
Min
(Note 7)
Typical
(Note 8)
Limit
(Note 7)
Units
(Limits)
V
DD
Supply Voltage
2.0
5.5
V
I
DD
Quiescent Power Supply
Current
V
IN = 0V, Io = 0A
6.5
10.0
mA
I
SD
Shutdown Current
V
PIN1 =VDD
0.6
2
µA
V
OS
Output Offset Voltage
V
IN = 0V
5.0
50
mV
P
o
Output Power
THD = 1%, f = 1kHz
LM4871LD, R
L =3
Ω (Note 10)
LM4871LD, R
L =4
Ω (Note 10)
LM4871, R
L =8
Ω (Note 10)
2.38
2
1.2
W
THD+N = 10%, f = 1kHz
LM4871LD, R
L =3
Ω (Note 10)
LM4871LD, R
L =4
Ω (Note 10)
LM4871, R
L =8
Ω (Note 10)
3
2.5
1.5
W
THD+N
Total Harmonic
Distortion+Noise
20Hz
≤ f ≤ 20kHz, A
VD =2
LM4871LD, R
L =4
Ω,P
O = 1.6W
LM4871, R
L =8
Ω,P
O =1W
0.13
0.25
%
PSRR
Power Supply Rejection
Ratio
V
DD = 4.9V to 5.1V
60
dB
Note 2: 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 is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 3: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX–TA)/θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4871, TJMAX = 150˚C.
For the
θJA’s for different packages, please see the Application Information section or the Absolute Maximum Ratings section.
Note 5: Human body model, 100pF discharged through a 1.5k
Ω resistor.
Note 6: Machine Model, 220pF–240pF discharged through all pins.
Note 7: Typicals are specified at 25˚C and represent the parametric norm.
Note 8: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 9: The given
θJA is for an LM4871 packaged in an LDC08A with the Exposed–DAP soldered to an exposed 1in2 area of 1oz printed circuit board copper.
Note 10: When driving 3
Ω or 4Ω loads from a 5V supply, the LM4871LD must be mounted to a circuit board.
www.national.com
3


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