參數資料
型號： LM4665
廠商： National Semiconductor Corporation
元件分類： 音頻放大器
英文描述： Filterless High Efficiency 1W Switching Audio Amplifier
中文描述： 濾波1W的高效率開關音頻放大器
文件頁數： 3/18頁
文件大?。?/td> 1018K
代理商： LM4665
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Notes 1,
Supply Voltage (Note 1)
Storage Temperature
Voltage at Any Input Pin
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
Junction Temperature (T
J
)
Thermal Resistance
θ
JA
(MSOP)
6.0V
65C to +150C
V
DD
+ 0.3V
≥
V
≥
GND - 0.3V
Internally Limited
2.0kV
200V
150C
190C/W
θ
JC
(MSOP)
θ
JA
(micro SMD)
θ
JA
(LLP) (Note 10)
θ
JC
(LLP) (Note 10)
Soldering Information
See AN-1112 "microSMD Wafers Level Chip Scale
Package."
56C/W
180C/W
63C/W
12C/W
Operating Ratings
(Note 2)
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage (MSOP & LD)
Supply Voltage (ITL) (Note11)
40C
≤
T
A
≤
85C
2.7V
≤
V
DD
≤
5.5V
2.7V
≤
V
DD
≤
3.8V
Electrical Characteristics V
DD
= 5V
The following specifications apply for V
DD
= 5V, R
L
= 8
+ 33μH, measurement bandwidth is
<
10Hz - 22kHz unless other-
wise specified. Limits apply for T
A
= 25C.
(Notes 1, 2, 11)
Symbol
Parameter
Conditions
LM4665
Units
(Limits)
Typical
(Note 6)
14
14.5
0.1
1.2
1.1
1.2
1.1
1.2
1.1
Limit
(Notes 7, 8)
I
DD
Quiescent Power Supply Current
V
IN
= 0V, No Load
V
IN
= 0V, 8
+ 22μH Load
V
SD
= V
SD Mode
(Note 9)
V
SD Mode
= V
DD
V
SD Mode
= V
DD
V
SD Mode
= GND
V
SD Mode
= GND
mA
mA
I
SD
V
SDIH
V
SDIL
V
SDIH
V
SDIL
V
GSIH
V
GSIL
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Shutdown Voltage Input High
Shutdown Voltage Input Low
Gain Select Input High
Gain Select Input Low
5.0
1.4
0.4
1.4
0.4
1.4
0.4
5.5
6.5
11.5
12.5
μA (max)
V (min)
V (max)
V (min)
V (max)
V (min)
V (max)
dB (min)
dB (max)
dB (min)
dB (max)
mV
ms
W
%
k
k
A
V
Closed Loop Gain
V
Gain Select
= V
DD
6
A
V
Closed Loop Gain
V
Gain Select
= GND
12
V
OS
T
WU
P
o
THD+N
Output Offset Voltage
Wake-up Time
Output Power
Total Harmonic Distortion+Noise
10
5
1.4
0.8
100
65
THD+N = 3% (max), f
IN
= 1kHz
P
O
= 400mW
RMS
, f
IN
= 1kHz
V
Gain Select
= V
DD
, Gain = 6dB
V
Gain Select
= GND, Gain = 12dB
V
Ripple
= 100mV
RMS
,
f
Ripple
= 217Hz, A
V
= 6dB
Inputs Terminated
V
Ripple
= 100mV
RMS
,
f
Ripple
= 217Hz, A
V
= 6dB
A-Weighted filter, V
IN
= 0V
R
IN
Differential Input Resistance
PSRR
Power Supply Rejection Ratio
52
dB
CMRR
Common Mode Rejection Ratio
43
dB
e
N
Output Noise Voltage
350
μV
L
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