LT1573C Просмотр технического описания (PDF) - Linear Technology
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LT1573C Datasheet PDF : 16 Pages
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LT1573
ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 5V, VDRIVE = 3V, unless otherwise noted.
PARAMETER
LATCH Pin Latch-Off Threshold Voltage
LATCH Pin Charging Current
LATCH Pin Latching Current
VIN – VOUT Differential Threshold for Latch Disable
Input Quiescent Current
Minimum Input Voltage for Bias Operation
CONDITIONS
VIN = 7V
MIN TYP MAX
UNITS
q
0.8
1.4
2.2
V
7
µA
0.65
mA
q
0.4
0.7
1.0
V
q
1.7
3.5
mA
q
2.8
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Operating conditions are limited by maximum junction
temperature. The regulated feedback or output voltage specification will
not apply for all possible combinations of input voltage, drive voltage and
drive current. When operating at maximum drive current, the drive voltage
range must be limited. When operating at maximum input and drive
voltage, the drive current must be limited.
TYPICAL PERFOR A CE CHARACTERISTICS
LT1573 Feedback Pin Voltage
vs Temperature
1.290
1.285
1.280
1.275
1.270
1.265
1.260
1.255
1.250
1.245
1.240
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
1573 G01
LT1573-2.5V Output Voltage
vs Temperature
2.60
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1573 G04
LT1573-3.3V Output Voltage
vs Temperature
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1573 G02
Feedback Pin Bias Current
vs Temperature
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1573 G05
LT1573-2.8V Output Voltage
vs Temperature
2.90
2.88
2.86
2.84
2.82
2.80
2.78
2.76
2.74
2.72
2.70
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1573 G03
Quiescent Current
vs Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1573 G06
3
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