Linear Technology LT3081, Техническое описание

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LT3081
6
3081fc
For more information www.linear.com/LT3081
TO-220 Package Maximum Power
Dissipation Programmable Current Limit Programmable Current Limit
Programmable Current Limit TEMP Pin Current I
MON
Pin Current
Dropout Voltage Internal Current Limit Internal Current Limit
TEMPERATURE (°C)
–50
DROPOUT VOLTAGE (V)
1.3
1.4
1.5
25 75 150
3081 G10
1.2
1.1
1.0
–25 0
50
100
I
LOAD
= 1.5A
I
LOAD
= 5mA
125
TEMPERATURE (°C)
–50
0
CURRENT LIMIT (A)
0.5
1.0
1.5
2.0
0 50 100 150
3081 G11
2.5
3.0
–25 25 75 125
V
IN
= 7V
V
OUT
= 0V
INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V)
0
0
CURRENT LIMIT (A)
0.4
0.8
1.2
6 12 18 24
3081 G12
30
1.6
2.0
0.2
0.6
1.0
1.4
1.8
36
TO-220 AND
DD-PAK
TSSOP
AND DFN
CASE TEMPERATURE (°C)
50
POWER (W)
10
20
150
3081 G13
0
70
90
110
60
80
100
120 130 140
30
5
15
25
V
IN
– V
OUT
= 20V
LIMITED BY FOLDBACK
CURRENT LIMIT
V
IN
– V
OUT
= 10V
V
IN
– V
OUT
= 5V
θ
JC
= 3°C/W
R
ILIM
(kΩ)
0
0
PROGRAMMED CURRENT LIMIT (A)
0.5
1.0
1.5
2.0
1 2 3 4
3081 G14
5 6
T
J
= 25°C
V
IN
= 7V
V
OUT
= 0V
OUTPUT CURRENT (A)
0
0
OUTPUT VOLTAGE (V)
0.2
0.4
0.6
0.95
1.00
1.05
0.5 1 1.5 2
3081 G15
R
ILIM
1.5k
R
ILIM
3.01k
R
ILIM
4.53k
R
SET
= 20k
TEMPERATURE (°C)
–50
TEMP PIN CURRENT (µA)
80
120
150
3081 G16
40
0
0
50
100 –25 25
75
125
160
60
100
20
140
LOAD CURRENT (A)
0
250
300
350
1.2
3081 G17
200
150
0.3 0.6 0.9 1.5
100
50
0
I
MON
PIN CURRENT (µA)
TEMPERATURE (°C)
–50
PROGRAMMED CURRENT LIMIT (A)
0.8
1.2
150
3081 G39
0.4
0
0 50 100 –25 25 75 125
1.6
0.6
1.0
0.2
1.4
R
ILIM
= 4.53k
R
ILIM
= 3.01k
R
ILIM
= 1.50k
V
IN
= 7V
V
OUT
= 0V
Typical perForMance characTerisTics
T
J
= 25°C unless otherwise specified.