LX1721 データシートの表示（PDF） - Microsemi Corporation
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LX1721 Datasheet PDF : 14 Pages
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INTEGRATED PRODUCTS
AudioMAX™
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
PRODUCTION
ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
Symbol
Test Conditions
LX1721 / 1722
Min
Typ
Max
Units
Current Limit Comparator
Voltage Sense Threshold
190
210
230
mV
Blanking Pulse Delay
500
‘ns
Response Time
IUM Pulses required to Current Limit
Latch
Consecutive Clear Pulses required to
reset IUM counter
Reference Voltage Section
Excluding blanking pulse
250
4
4
2
2
‘ns
4
‘cycles
2
‘cycles
Initial Accuracy (VREF)
5.0
Voltage Stability (VREF)
± 50
± 100
‘mV
Initial Accuracy (V25)
2.5
Voltage Stability (V25)
Temperature Stability
TA = 0OC to 70OC
± 25
± 50
mV
2
5
‘mV
Line Regulation
Load Regulation
Under Voltage Lockout Section
VDD = 9V to 15V
IOUT = 0 to 10mA
0.5
‘mV
5
‘mV
Start Threshold Voltage
6
V
UV Lockout Hysteresis
250
mV
UVLO Delay To Output Enable
62,500
clkcyc
Supply Current
Sleep Current
Operating Current
Sleep to Output Enable
SLEEP Input = 0V, TA = 25OC
SLEEP Input = 2V, VIN = 15V,
No MOSFETs connected
30
8
62,500
µA
11
‘mA
clkcyc
Sleep Threshold
1.45
1.6
1.75
V
Mute Section
Mute Threshold
1.2
1.35
1.5
V
Output Drivers For N-Channel MOSFETs
NFET Drivers, Low Level Voltage
VOL
NFET Drivers, High Level Voltage
VOH
Output Drives For P-Channel MOSFETs
ISINK = 3mA
ISINK = 100mA
ISOURCE = 3mA, CN = 5.2V
applied externally
ISOURCE = 100mA, CN = 5.2V
applied externally
30
100
‘mV
0.3
1.0
V
30
100
‘mV
0.3
1.0
V
PFET Drivers, Low Level Voltage
VOL
ISINK = 3mA
ISINK = 100mA
30
100
‘mV
0.5
1.0
V
PFET Drivers, High Level Voltage
ISOURCE = 3mA, CP = 5.2V
VOH
(applied externally)
ISOURCE = 100mA, CP = 5.2V
(applied externally)
30
100
‘mV
0.5
1.0
V
Note 2: The LX1721 / 22CDB is guaranteed to meet performance specifications from 0° to 70°C. Specifications over the -20° to 0°C operation temperature
range are assured by design, characterization, and statistical process control.
Copyright © 2001
Rev. 1.2a,2004-06-10
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
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