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LT1317 bảng dữ liệu(PDF) 2 Page - Linear Technology

tên linh kiện LT1317
Giải thích chi tiết về linh kiện  Micropower, 600kHz PWM DC/DC Converters
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LT1317 bảng dữ liệu(HTML) 2 Page - Linear Technology

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LT1317/LT1317B
ORDER PART
NUMBER
A
G
A
U
A
R
BSOLUTEXI
TI
S
VIN, LBO Voltage ..................................................... 12V
SW Voltage ............................................... – 0.4V to 30V
FB Voltage .................................................... VIN + 0.3V
VC Voltage ................................................................ 2V
LBI Voltage ............................................ 0V
≤ VLBI ≤ 1V
SHDN Voltage ............................................................ 6V
Junction Temperature .......................................... 125
°C
Operating Temperature Range
Commercial ........................................... 0
°C to 70°C
Industrial ............................................ – 40
°C to 85°C
Storage Temperature Range ................ – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300
°C
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
1
2
3
4
VC
FB
SHDN
GND
8
7
6
5
LBO
LBI
VIN
SW
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 160°C/W
1
2
3
4
8
7
6
5
TOP VIEW
LBO
LBI
VIN
SW
VC
FB
SHDN
GND
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 120°C/W
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
Not Switching, VSHDN = 2V (LT1317)
q
100
160
µA
VSHDN = 0V (LT1317/LT1317B)
q
25
40
µA
VSHDN = 2V, Switching (LT1317B)
4.8
6.5
mA
VSHDN = 2V, Switching (LT1317B)
q
7.5
mA
VFB
Feedback Voltage
1.22
1.24
1.26
V
q
1.20
1.24
1.26
V
IB
FB Pin Bias Current (Note 2)
q
12
60
nA
Input Voltage Range
q
1.5
12
V
gm
Error Amp Transconductance
∆I = 5µA
q
70
140
240
µmhos
AV
Error Amp Voltage Gain
700
V/V
Maximum Duty Cycle
q
80
85
%
Switch Current Limit (Note 3)
VIN = 2.5V, Duty Cycle = 30%
710
800
1300
mA
VIN = 2.5V, Duty Cycle = 30%
q
660
1350
mA
Burst Mode Operation Switch Current Limit
Duty Cycle = 30% (LT1317)
275
mA
fOSC
Switching Frequency
q
520
620
720
kHz
ELECTRICAL C
C
HARA TERISTICS
Commercial Grade
VIN = 2V, VSHDN = 2V, TA = 25°C, unless otherwise noted.
Consult factory for Military grade parts.
MS8 PART MARKING
S8 PART MARKING
LT1317CS8
LT1317BCS8
LT1317IS8
LT1317BIS8
1317
1317B
1317I
1317BI
LTHA
LTHB
LT1317CMS8
LT1317BCMS8
(Note 1)



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