LT3597IUHG データシートの表示（PDF） - Linear Technology
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LT3597IUHG Datasheet PDF : 24 Pages
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LT3597
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
VIN Quiescent Current
3.0
VBIAS = 5V
2.5
125°C
2.0
–40°C
1.5
25°C
1.0
0.5
0
0 10 20 30 40 50 60
VIN VOLTAGE (V)
3597 G01
VBIAS Quiescent Current
3.0
VIN = 24V
2.5
125°C
25°C
2.0
–40°C
1.5
1.0
0.5
0
–0.5
0
5
10
15
20
25
VBIAS VOLTAGE (V)
3597 G02
Shutdown Current
2.00
VIN = 55V
1.75 VBIAS = 25V
1.50
1.25
1.00
0.75
0.50
IVIN
0.25
IBIAS
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G03
UVLO Threshold Voltage (Falling)
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G04
EN/UVLO Pin Bias Current
6
5
EN/UVLO = 1.4V
4
3
2
1
0
–50 –25
EN/UVLO = 1.6V
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G05
VREF Voltage
2.04
VREF LOAD = 0µA
2.03
2.02
2.01
VIN = 24V
VIN = 55V
2.00
VIN = 6V
1.99
1.98
1.97
1.96
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G06
Switching Frequency
1.2
RT = 33.2k
1.0
0.8
0.6
0.4
RT = 220k
0.2
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G07
Current Limit
600
SWITCH
500
400
300
DA
200
100
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3597 G08
Switch Voltage Drop
600
VBIAS = 5V
500
125°C
25°C
400
–40°C
300
200
100
0
0
50 100 150 200 250
SWITCH CURRENT (mA)
3597 G09
3597f
5
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