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TYPICAL PERFORMANCE CHARACTERISTICS
INTV
Line Regulation
CC
6
5
4
3
2
1
0
0
5
10
15
20
25
INPUT VOLTAGE (V)
Maximum Current Sense
Threshold vs Feedback Voltage
(Current Foldback)
35
30
ILIM = 3/4 INTV
25
ILIM = 1/2 INTV
20
ILIM = 1/4 INTV
15
10
5
0
0
0.1
0.2
0.3
FEEDBACK VOLTAGE (V)
Regulated Feedback Voltage
vs Temperature
0.6045
0.6035
0.6025
0.6015
0.6005
0.5995
0.5985
0.5975
0.5965
0.5955
–50 –30 –10
Current Sense Threshold
vs I
TH
40
35
30
25
20
15
10
5
0
–5
–10
30
35
40
0
3875 G10
TK/SS Pull-Up Current
vs Temperature
1.40
ILIM = INTV
CC
1.35
1.30
CC
1.25
CC
1.20
CC
1.15
ILIM = GND
1.10
1.05
1.00
0.4
0.5
0.6
–50
–30
3875 G13
10 30 50
70
90 110
130
TEMPERATURE (°C)
3875 G16
For more information
Voltage
ILIM = 0
ILIM = 1/4 INTV
CC
ILIM = 1/2 INTV
CC
ILIM = 3/4 INTV
CC
ILIM = INTV
CC
0.5
1
1.5
2
I
VOLTAGE (V)
TH
3875 G11
–10
10
30
50
70
90
110
130
TEMPERATURE (°C)
3875 G14
Oscillator Frequency
vs Temperature
900
800
700
600
500
400
300
200
100
0
–50
www.linear.com/LTC3875
LTC3875
Maximum Current Sense Threshold
vs Common Mode Voltage
35
ILIM = INTV
CC
30
ILIM = 3/4 INTV
25
ILIM = 1/2 INTV
20
ILIM = 1/4 INTV
15
ILIM = GND
10
5
0
0
1
2
V
COMMON MODE VOLTAGE (V)
SENSE
Shutdown (RUN) Threshold
vs Temperature
1.30
1.25
ON
1.20
1.15
OFF
1.10
1.05
1.00
–50
0
50
TEMPERATURE (°C)
V
= INTV
FREQ
CC
V
= 1.22V
FREQ
V
= GND
FREQ
0
50
100
150
TEMPERATURE (°C)
3875 G17
CC
CC
CC
3
4
3875 G12
100
150
4320 G01
3875fb
7
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