Datasheet

LT3045
8
Rev. B
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TYPICAL PERFORMANCE CHARACTERISTICS
ILIM Pin Current PGFB Rising Threshold PGFB Hysteresis
Internal Current Limit Programmable Current Limit Programmable Current Limit
T
J
= 25°C, unless otherwise noted.
Input Pin Current Internal Current Limit Internal Current Limit
V
IN
= 2V
150°C
125°C
25°C
–55°C
ENABLE PIN VOLTAGE (V)
–20
–18
–16
–14
–12
–10
–8
–6
–4
–2
0
0
0.1
0.2
0.3
INPUT CURRENT (µA)
3045 G25
R
ILIM
= 0Ω
V
OUT
= 0V
V
IN
= 2.5V
V
IN
= 12V
TEMPERATURE (°C)
–75
–50
–25
0
25
50
75
100
125
150
0
100
200
300
400
500
600
700
800
900
1000
CURRENT LIMIT (mA)
3045 G26
V
IN
= 20V
R
ILIM
= 0Ω
V
OUT
= 0V
TEMPERATURE (°C)
–75
–50
–25
0
25
50
75
100
125
150
0
100
200
300
400
500
600
CURRENT LIMIT (mA)
3045 G27
R
ILIM
= 0Ω
150°C
125°C
25°C
–55°C
INPUT-TO-OUTPUT DIFFERENTIAL (V)
0
2
4
6
8
10
12
14
16
18
20
0
100
200
300
400
500
600
700
800
900
1000
CURRENT LIMIT (mA)
3045 G28
R
ILIM
= 300Ω
V
OUT
= 0V
V
IN
= 2.5V
V
IN
= 12V
TEMPERATURE (°C)
–75
–50
–25
0
25
50
75
100
125
150
0
100
200
300
400
500
600
700
800
900
1000
CURRENT LIMIT (mA)
3045 G29
R
ILIM
= 1.5k
V
OUT
= 0V
V
IN
= 2.5V
V
IN
= 12V
TEMPERATURE (°C)
–75
–50
–25
0
25
50
75
100
125
150
0
20
40
60
80
100
120
140
160
180
200
CURRENT LIMIT (mA)
3045 G30
V
ILIM
= 0V
R
SET
= 13k
2.5V
IN
5V
IN
10V
IN
OUTPUT CURRENT (mA)
0
50
100
150
200
250
300
350
400
450
500
0
100
200
300
400
500
600
700
800
900
1000
ILIM PIN CURRENT (uA)
3045 G31
V
IN
= 2V
TEMPERATURE (°C)
–75
–50
–25
0
25
50
75
100
125
150
290
292
294
296
298
300
302
304
306
308
310
PGFB RISING THRESHOLD (mV)
3045 G32
V
IN
= 2V
TEMPERATURE (°C)
–75
–50
–25
0
25
50
75
100
125
150
0
1
2
3
4
5
6
7
8
PGFB HYSTERESIS (mV)
3045 G33
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