LT3469 データシートの表示（PDF） - Linear Technology
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LT3469 Datasheet PDF : 8 Pages
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LT3469
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 5V, VCC = 35V, unless otherwise noted.
PARAMETER
Switch Leakage Current
Diode VF
Diode Reverse Leakage Current
CONDITIONS
VSW = 5V
ID = 100mA
VR = 5V
MIN TYP MAX
0.01
1
740 1100
0.1
1
UNITS
µA
mV
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3469E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
TYPICAL PERFOR A CE CHARACTERISTICS
(Switching Regulator)
VIN Quiescent Current
2.4
2.2
–50°C
2.0
1.8
25°C 100°C
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 2 4 6 8 10 12 14 16
VIN (V)
3469 G05
Current Limit vs Duty Cycle
250
TA = 25°C
200
150
100
50
0
0
20
40
60
80 100
DUTY CYCLE (%)
3469 G06
Schottky Forward Voltage
250
200
150
25°C
100°C
100
–50°C
50
0
200 300 400 500 600 700 800 900 1000
FORWARD VOLTAGE (mV)
3469 G07
Schottky Reverse Leakage
25
VR = 5V
20
15
10
5
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
3469 G09
Switching Frequency
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50
TEMPERATURE (°C)
75 100
3469 G10
FB Pin Voltage and Bias Current
1.275
50
1.255
1.235
1.215
40
CURRENT
30
VOLTAGE
20
1.195
10
1.175
–50
–25 0 25 50
TEMPERATURE (°C)
0
75 100
3469 G11
3469f
3
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