參數(shù)資料
型號： LX1722-150EVALKIT
英文描述： AudioMAX Products
中文描述： AudioMAX產品
文件頁數(shù)： 5/14頁
文件大?。?/td> 357K
代理商： LX1722-150EVALKIT
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2000
Rev. 0.1b,2001-09-19
W
M
.
C
AudioMAX
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
P
RELIMINARY
L I N F I N I T Y D I V I S I O N
E L E C T R I C A L C H A R A C T E RI S T I C S ( C O N T I N U E D )
LX1721 / 1722
Typ
Parameter
Symbol
Test Conditions
Min
Max
Units
Feedback Amplifier
Stage Gain LX1721
LX1722
Input Impedance
Current Limit Comparator
Set by Internal Resistors
Set by Internal Resistors
89
56
91
57
388
93
58
‘
mV/V
‘
mV/V
k
Voltage Sense Threshold
Blanking Pulse Delay
Response Time
I
Pulses required to Current Limit
Latch
Consecutive Clear Pulses required to
reset I
UM
counter
Reference Voltage Section
Excluding blanking pulse
190
210
500
250
230
mV
‘
ns
‘
ns
4
4
4
‘
cycles
2
2
2
‘
cycles
Initial Accuracy
Voltage Stability
T
A
= 0
O
C to 70
O
C
T
A
= -40
O
C to 125
O
C
V
DD
= 9V to 15V
I
OUT
= 0 to 20mA
5.000
± 25
2
4
0.5
5
± 50
5
10
‘
mV
‘
mV
‘
mV
‘
mV
‘
mV
Temperature Stability
Line Regulation
Load Regulation
Under voltage Lockout Section
Start Threshold Voltage
UV Lockout Hysteresis
UVLO Delay To Output Enable
Supply Current
6.5
6.5
62,500
V
V
0.5
clkcyc
Sleep Current
SLEEP Input = 0V, T
A
= 25
O
C
SLEEP Input = 2V, V
= 15V,
No MOSFETs connected
25
μ
A
Operating Current
2.9
5.0
‘
mV
Sleep to Output Enable
Sleep Threshold
Mute Section
62,500
1.45
clkcyc
V
1.2
1.6
Mute Threshold
Output Drivers for N-Channel MOSFETs
1.6
1.7
1.8
V
I
SINK
= 3mA
I
SINK
= 75mA
I
SOURCE
= 3mA, C
N
= 5.2V
applied externally
I
SOURCE
= 75mA, C
N
= 5.2V
applied externally
30
1.5
100
2.0
‘
mV
V
NFET Drivers, Low Level Voltage
V
OL
30
100
‘
mV
NFET Drivers, High Level Voltage
V
OH
1.5
2.0
V
Output Drives For P-Channel MOSFETs
I
SINK
= 3mA
I
SINK
= 75mA
I
SOURCE
= 3mA, C
P
= 5.2V
(applied externally)
I
SOURCE
= 75mA, C
P
= 5.2V
(applied externally)
30
1
100
1.5
‘
mV
V
PFET Drivers, Low Level Voltage
V
OL
30
100
‘
mV
PFET Drivers, High Level Voltage
V
OH
1
1.5
V
E
L
E
C
T
R
I
C
A
L
S
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