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LM48520 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM48520
Description  Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum
PDF  18 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM48520 Datasheet(HTML) 5 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 (V
DD, V1)
6V
Storage Temperature
−65°C to +150°C
Input Voltage
−0.3V to V
DD + 0.3V
Power Dissipation (Note 3)
Internally limited
ESD Susceptibility (Note 4)
2000V
ESD Susceptibility (Note 5)
200V
Junction Temperature
150°C
Thermal Resistance
 θ
JA (TL)
40.5 °C/W
Operating Ratings
Temperature Range
T
MIN ≤ TA ≤ TMAX
−40°C
≤ T
A ≤ +85°C
Supply Voltage (V
DD)
2.7V
≤ V
DD ≤ 5.0V
Amplifier Voltage (V1 )
Not under Boosted Condition
2.4V
≤ V
1 ≤ 5.5V
Amplifier Voltage (PV1 )
Under Boosted Condition
3.0V
≤ PV
1 ≤ 5.0V
Electrical Characteristics V
DD = 3.3V (Notes 1, 2)
The following specifications apply for V
DD = 3.3V, AV = 6dB, RL = 15µH + 8Ω +15µH, fIN = 1kHz, unless otherwise specified. Limits
apply for T
A = 25°C, R1 = 40.2kΩ, R2 = 16.2kΩ, V1 = PV1 = 5V, Vlimit = GND. All electrical specifications are for amplifier and booster.
Symbol
Parameter
Conditions
LM48520
Units
(Limits)
Typical
(Note 6)
Limit
(Notes 7, 8)
I
DD
Quiescent Power Supply Current
V
IN = 0, RLOAD = ∞
V
DD = 2.7V
14.8
V
DD = 3.3V
11.5
15.5
mA (max)
V
DD = 5.0V
8.0
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.04
1.0
μA (max)
V
SDIH
Shutdown Voltage Input High
For SD Boost, SD Amp
1.4
V
V
SDIL
Shutdown Voltage Input Low
For SD Boost, SD Amp
0.4
V
T
WU
Wake-up Time
Amplifier + Booster Wakeup
3
ms
V
OS
Output Offset Voltage
5
mV
A
V
Gain
G0, G1 = GND
R
L = ∞
6
dB
G0 = V
DD, G1 = GND
R
L = ∞
12
dB
G0 = GND, G1 = V
DD
R
L = ∞
18
dB
G0, G1 = V
DD
R
L = ∞
24
dB
P
O
Output Power
R
L = 15μH + 8Ω + 15μH
THD+N = 1% (max),
f = 1kHz, 22kHz, BW
V
DD = 3.3V
1.1
0.87
W (min)
R
L = 15μH + 8Ω + 15μH
THD+N = 10% (max),
f = 1kHz, 22kHz, BW
V
DD = 3.3V
1.3
W
THD+N
Total Harmonic Distortion + Noise
P
O = 500mW, f = 1kHz,
R
L = 15μH + 8Ω + 15μH,
V
DD = 3.3V
0.04
%
ε
OS
Output Noise
V
DD = 3.6V, f = 20Hz – 20kHz
Inputs to AC GND, A weighted
32
µV
RMS
5
www.national.com



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