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LT8331 数据表(PDF) 3 Page - Analog Devices

部件名 LT8331
功能描述  Low IQ Boost/SEPIC/Inverting Converter with 1.5A, 150V Switch
PDF  30 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

LT8331 数据表(HTML) 3 Page - Analog Devices

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LT8365
3
Rev. A
For more information www.analog.com
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Operating Voltage Range
l
2.8
60
V
VIN Quiescent Current at Shutdown
VEN/UVLO = 0.2V
l
1
1
2
15
μA
μA
VEN/UVLO = 1.5V
l
2
2
5
25
μA
μA
VIN Quiescent Current
Sleep Mode (Not Switching)
SYNC = 0V
l
9
9
15
30
μA
μA
Active Mode (Not Switching)
SYNC = 0V or INTVCC, BIAS = 0V
l
1200
1200
1600
1850
µA
µA
SYNC = 0V or INTVCC, BIAS = 5V
l
22
22
40
65
µA
µA
BIAS Threshold
Rising, BIAS Can Supply INTVCC
Falling, BIAS Cannot Supply INTVCC
4.4
4
4.65
4.25
V
V
VIN Falling Threshold to Supply INTVCC
BIAS = 12V
BIAS – 2V
V
BIAS Falling Threshold to Supply INTVCC
VIN = 12V
VIN
V
FBX Regulation
FBX Regulation Voltage
FBX > 0V
FBX < 0V
l
l
1.568
–0.822
1.6
–0.80
1.636
–0.780
V
V
FBX Line Regulation
FBX > 0V, 2.8V < VIN < 60V
FBX < 0V, 2.8V < VIN < 60V
0.005
0.005
0.015
0.015
%/V
%/V
FBX Pin Current
FBX = 1.6V, –0.8V
l
–10
10
nA
Oscillator
Switching Frequency (fOSC)
RT = 432k
RT = 143k
RT = 84.5k
l
l
l
92
279
465
100
300
500
113
321
535
kHz
kHz
kHz
SSFM Maximum Frequency Deviation
(∆f/fOSC) • 100, RT = 143k
14
20
28
%
Minimum On-Time
Burst Mode, VIN = 24V (Note 6)
Pulse-Skipping Mode, VIN = 24V (Note 6)
110
110
200
200
ns
ns
Minimum Off-Time
l
100
115
ns
SYNC/Mode, Mode Thresholds (Note 5)
High (Rising), VIN = 24V
Low (Falling), VIN = 24V
l
l
0.14
1.3
0.2
1.7
V
V
SYNC/Mode, Clock Thresholds (Note 5)
Rising, VIN = 24V
Falling, VIN = 24V
l
l
0.4
1.3
0.8
1.7
V
V
fSYNC/fOSC Allowed Ratio
RT = 84.5k
0.95
1
1.25
kHz/kHz
SYNC Pin Current
SYNC = 2V
SYNC = 0V, Current Out of Pin
10
10
25
25
µA
µA
Switch
Maximum Switch Current Limit Threshold
l
1.5
2
2.7
A
Switch Overcurrent Threshold
Discharges SS Pin
3
A
Switch RDS(ON)
ISW = 0.5A
700
mΩ
Switch Leakage Current
VSW = 150V
0.1
1
µA
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, EN/UVLO = 12V unless otherwise noted.



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