LT3587 데이터 시트보기 (PDF) - Linear Technology
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LT3587 Datasheet PDF : 24 Pages
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LT3587
TYPICAL PERFORMANCE CHARACTERISTICS Specifications are at TA = 25°C unless otherwise noted.
Switching Frequency
vs Temperature
1.20
VVIN = 3.6V
1.10
1.00
0.90
0.80
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3587 G08
Switches VCESAT vs Current
0.5
VVIN = 3.6V
0.4
SW3
0.3
SW1
SW2
0.2
0.1
0
0 0.2 0.4 0.6 0.8 1 1.2
SW CURRENT (A)
3587 G09
Switches Current Limit
vs Temperature
1.2
VVIN = 3.6V
DUTY CYCLE = 60%
1.0
0.8
SW1
SW2
0.6
0.4
SW3
0.2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3587 G10
Switches Current Limit
vs Duty Cycle
2.5
VVIN = 3.6V
2.0
SW2
1.5
SW1
1.0
0.5
SW3
SW1 and SW2 Current Limit
vs EN/SS1 Voltage
1.6
VVIN = 3.6V
DUTY CYCLE = 60%
SW2
1.2
SW1
0.8
0.4
SW3 Current Limit
vs EN/SS3 Voltage
0.5
VVIN = 3.6V
SW3
0.4
0.3
0.2
0.1
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
3587 G11
0
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5
EN/SS1 VOLTAGE (V)
3587 G12
0
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5
EN/SS3 VOLTAGE (V)
3587 G13
Output Disconnects On Resistance
vs Temperature (RDISC1, RDISC3)
14
VVIN = 3.6V
IVOUT1 = 50mA
12 IVOUT3 = 20mA
10
RDISC3
8
6
RDISC1
4
2
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3587 G14
Output Disconnects Current Limit
vs Temperature
200.0
VVIN = 3.6V
VVOUT1 = VVOUT3 = 15V
167.5
IVOUT1
135.0
102.5
IVOUT3
70
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3587 G15
EN/SS1, EN/SS3 Pull-Up Current
In Shutdown vs Temperature
1.50
VVIN = 3.6V
EN/SS1 = EN/SS3 = 0V
1.25
1.00
0.75
0.50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3587 G16
3587fc
5
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