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LM4670 Datasheet(Fiches technique) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Numéro de pièce LM4670
Description  Filterless High Efficiency 3W Switching Audio Amplifier
Télécharger  18 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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LM4670 Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (Note 1)
6.0V
Storage Temperature
−65˚C to +150˚C
Voltage at Any Input Pin
V
DD + 0.3V
≥ V ≥ GND - 0.3V
Power Dissipation (Note 3)
Internally Limited
ESD Susceptibility (Note 4)
2.0kV
ESD Susceptibility (Note 5)
200V
Junction Temperature (T
JMAX)
150˚C
Thermal Resistance
θ
JA (micro SMD)
220˚C/W
θ
JA (LLP)
64˚C/W
θ
JC (LLP)
TBD˚C/W
Soldering Information
See AN-1112 "microSMD Wafers Level Chip Scale
Package."
Operating Ratings (Note 1) (Note 2)
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−40˚C
≤ T
A
≤ 85˚C
Supply Voltage
2.4V
≤ V
DD
≤ 5.5V
Electrical Characteristics (Notes 1, 2)
The following specifications apply for A
V = 2V/V (RI = 150k
Ω), R
L =15µH+8
Ω + 15µH unless otherwise specified. Limits ap-
ply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4670
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
|V
OS|
Differential Output Offset Voltage
V
I = 0V, AV = 2V/V,
V
DD = 2.4V to 5.0V
25
mV (max)
PSRR
GSM
GSM Power Supply Rejection Ratio
V
DD = 2.4V to 5.0V,
Input Referred
64
dB
CMRR
GSM
GSM Common Mode Rejection
Ratio
V
DD = 2.4V to 5.0V
V
IC =VDD/2 to 0.5V,
V
IC =VDD/2 to VDD – 0.8V,
Input Referred
80
dB
|I
IH|
Logic High Input Current
V
DD = 5.0V, VI = 5.8V
20
100
µA (max)
|I
IL|
Logic Low Input Current
V
DD = 5.0V, VI = –0.3V
1
5
µA (max)
V
IN = 0V, No Load, VDD = 5.0V
7.0
10
mA (max)
I
DD
Quiescent Power Supply Current
V
IN = 0V, No Load, VDD = 3.6V
4.8
mA
V
IN = 0V, No Load, VDD = 2.4V
3.8
5
mA (max)
I
SD
Shutdown Current
V
SHUTDOWN =0V
V
DD = 2.4V to 5.0V
0.01
1
µA (max)
V
SDIH
Shutdown voltage input high
1.0
1.4
V (min)
V
SDIL
Shutdown voltage input low
0.8
0.4
V (max)
R
OSD
Output Impedance
V
SHUTDOWN = 0.4V
>100
k
A
V
Gain
300k
Ω/R
I
270k
Ω/R
I
330k
Ω/R
I
V/V (min)
V/V (max)
R
SD
Resistance from Shutdown Pin to
GND
300
k
P
O
Output Power
R
L =15µH+4
Ω + 15µH,
THD = 10% (max)
f = 1kHz, 22kHz BW
V
DD =5V
V
DD = 3.6V
V
DD = 2.5V
3.0
1.5
675
W
W
mW
R
L =15µH+4
Ω + 15µH,
THD+N = 1% (max)
f = 1kHz, 22kHz BW
V
DD = 5V,
V
DD = 3.6V,
V
DD = 2.5V,
2.3
1.2
550
W
W
mW
www.national.com
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