Datasheet

LT8609/LT8609A/LT8609B
7
Rev. H
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TYPICAL PERFORMANCE CHARACTERISTICS
Switch Drop vs Temperature Switch Drop vs Switch Current
Minimum On-Time
vs Temperature
Minimum Off-Time
vs Temperature
Dropout Voltage vs Load Current
Switching Frequency
vs Temperature
L = XFL4020–222MEC
LOAD CURRENT (A)
0
0.5
1
1.5
2
2.5
3
0
200
400
600
800
1000
DROPOUT VOLTAGE (mV)
8609 G20
SWITCH CURRENT = 1A
TOP SW
BOT SW
TEMPERATURE (°C)
–50
–30
–10
10
30
50
70
90
110
130
150
0
50
100
150
200
250
300
350
SWITCH DROP (mV)
Switch Drop vs Temperature
8609 G16
TOP SW
BOT SW
SWITCH CURRENT (A)
0
0.5
1
1.5
2
2.5
3
0
100
200
300
400
500
600
700
800
SWITCH DROP (mV)
Switch Drop vs Switch Current
8609 G17
TEMPERATURE (°C)
–50
–30
–10
10
30
50
70
90
110
130
150
50
60
70
80
90
100
110
120
130
140
150
MINIMUM OFF–TIME (ns)
Minimum Off–Time Vs Temperature
8609 G19
V
IN
= 6V
I
LOAD
= 1A
R
T
= 18.2kΩ
TEMPERATURE (°C)
–50
–30
–10
10
30
50
70
90
110
130
150
1.975
1.980
1.985
1.990
1.995
2.000
2.005
SWITHCING FREQUENCY (MHz)
Switching Frequency Vs Temperature
8609 G21
SYNC = 2V, 1.5A OUT
SYNC = 0V, 1.5A OUT
TEMPERATURE (°C)
–50
–30
–10
10
30
50
70
90
110
130
150
0
10
20
30
40
50
60
70
MINIMUM ON-TIME (ns)
Minimum On-Time Vs Temperature
8609 G18
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