1307B 查看數據表（PDF） - Linear Technology
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1307B Datasheet PDF : 20 Pages
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LT1307/LT1307B
ELECTRICAL CHARACTERISTICS
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.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Maximum Duty Cycle
25°C, 0°C
70°C
80
84
%
76
%
Switch Current Limit (Note 4)
DC = 40%
DC = 75%
q
0.6
1.25
A
0.5
A
Switch VCESAT
Burst Mode Operation Switch Current Limit
(LT1307 Only)
ISW = 500mA (25°C, 0°C)
ISW = 500mA (70°C)
L = 10µH
L = 22µH
295
350
mV
400
mV
100
mA
50
mA
Shutdown Pin Current
LBI Threshold Voltage
VSHDN = VIN
VSHDN = 0V
q
2.5
4.0
µA
q
– 1.5
– 2.5
µA
q 190
200
210
mV
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 5)
Low-Battery Detector Gain
ISINK = 10µA
VLBI = 250mV, VLBO = 5V
VLBI = 150mV
1MΩ Load (25°C, 0°C)
1MΩ Load (70°C)
q
0.1
0.25
V
q
0.01
0.1
µA
q
5
25
nA
1000
3000
V/V
500
V/V
Switch Leakage Current
Reverse Battery Current
VSW = 5V
(Note 6)
q
0.01
3
µA
750
mA
Commercial Grade TA = – 20°C, VIN = 1.1V, VSHDN = VIN, unless otherwise noted (Note 2).
SYMBOL PARAMETER
IQ
Quiescent Current
VFB
Feedback Voltage
gm
Error Amp Transconductance
AV
Error Amp Voltage Gain
fOSC
Switching Frequency
Maximum Duty Cycle
Switch VCESAT
Shutdown Pin Current
LBI Threshold Voltage
CONDITIONS
VFB = 1.3V, Not Switching (LT1307)
VFB = 1.3V, Not Switching (LT1307B)
VSHDN = 0V
∆I = 5µA
ISW = 500mA, VIN = 1.2V
VSHDN = VIN
VSHDN = 0V
MIN
TYP
MAX UNITS
50
100
µA
1.1
1.6
mA
1
3
µA
1.195
1.22
1.245
V
25
35
65 µmhos
35
100
V/V
500
600
750
kHz
80
84
%
250
350
mV
2.5
4.0
µA
– 1.5
– 2.5
µA
186
200
210
mV
1307fa
3
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