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參數(shù)資料
| 型號： | LT1307IS8#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.25 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 369K |
| 代理商： | LT1307IS8#TR |
3
LT1307/LT1307B
1307fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Duty Cycle
25
°C, 0°C80
84
%
70
°C76
%
Switch Current Limit (Note 4)
DC = 40%
q
0.6
1.25
A
DC = 75%
0.5
A
Switch VCESAT
ISW = 500mA (25°C, 0°C)
295
350
mV
ISW = 500mA (70°C)
400
mV
Burst Mode Operation Switch Current Limit
L = 10
H
100
mA
(LT1307 Only)
L = 22
H50
mA
Shutdown Pin Current
VSHDN = VIN
q
2.5
4.0
A
VSHDN = 0V
q
– 1.5
– 2.5
A
LBI Threshold Voltage
q
190
200
210
mV
LBO Output Low
ISINK = 10A
q
0.1
0.25
V
LBO Leakage Current
VLBI = 250mV, VLBO = 5V
q
0.01
0.1
A
LBI Input Bias Current (Note 5)
VLBI = 150mV
q
525
nA
Low-Battery Detector Gain
1M
Load (25°C, 0°C)
1000
3000
V/V
1M
Load (70°C)
500
V/V
Switch Leakage Current
VSW = 5V
q
0.01
3
A
Reverse Battery Current
(Note 6)
750
mA
Commercial Grade TA = – 20°C, VIN = 1.1V, VSHDN = VIN, unless otherwise noted (Note 2).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
VFB = 1.3V, Not Switching (LT1307)
50
100
A
VFB = 1.3V, Not Switching (LT1307B)
1.1
1.6
mA
VSHDN = 0V
1
3
A
VFB
Feedback Voltage
1.195
1.22
1.245
V
gm
Error Amp Transconductance
I = 5A25
35
65
mhos
AV
Error Amp Voltage Gain
35
100
V/V
fOSC
Switching Frequency
500
600
750
kHz
Maximum Duty Cycle
80
84
%
Switch VCESAT
ISW = 500mA, VIN = 1.2V
250
350
mV
Shutdown Pin Current
VSHDN = VIN
2.5
4.0
A
VSHDN = 0V
– 1.5
– 2.5
A
LBI Threshold Voltage
186
200
210
mV
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
Commercial Grade 0
°C to 70°C. VIN = 1.1V, VSHDN = VIN, LT1307/LT1307B unless otherwise noted.
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