LT3080 View Datasheet(PDF) - Linear Technology
Part Name
Description
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LT3080 Datasheet PDF : 26 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
(Minimum IN Voltage)
400
350
ILOAD = 1.1A
300
250
200
ILOAD = 500mA
150
100
ILOAD = 100mA
50
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3080 G10
Dropout Voltage (Minimum
VCONTROL Pin Voltage)
1.6
TJ = –50°C
1.4
1.2
TJ = 125°C
1.0
TJ = 25°C
0.8
0.6
0.4
0.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2
OUTPUT CURRENT (A)
3080 G11
LT3080
Dropout Voltage (Minimum
VCONTROL Pin Voltage)
1.6
1.4
ILOAD = 1.1A
1.2
1.0
ILOAD = 1mA
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3080 G12
Current Limit
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2 VIN = 7V
VOUT = 0V
0
–50 –25 0
25 50 75 100 125 150
TEMPERATURE (°C)
3080 G13
Load Transient Response
150
100
50
0
–50
–100
1.2
0.9
VIN = VCONTROL = 3V
VOUT = 1.5V
0.6
COUT = 10μF CERAMIC
CSET = 0.1μF
0.3
0
0 5 10 15 20 25 30 35 40 45 50
TIME (μs)
3080 G16
Current Limit
1.6
TJ = 25°C
1.4
SOT-223, DD-PAK
1.2
AND TO-220
1.0
0.8
0.6
MSOP
0.4
AND
DFN
0.2
0
0
6 12 18 24 30 36*
INPUT-TO-OUTPUT DIFFERENTIAL (V)
*SEE NOTE 9 IN ELECTRICAL
CHARACTERISTICS TABLE
3080 G14
Line Transient Response
75
50
25
0
–25
–50
VOUT = 1.5V
ILOAD = 10mA
6
COUT = 2.2μF
CERAMIC
5
CSET = 0.1μF
4
CERAMIC
3
2
0 10 20 30 40 50 60 70 80 90 100
TIME (μs)
3080 G17
Load Transient Response
75
VOUT = 1.5V
50
CSET = 0.1μF
25
VIN = VCONTROL = 3V
0
–25
COUT = 10μF CERAMIC
–50
COUT = 2.2μF CERAMIC
400
300
200
100
0
0 5 10 15 20 25 30 35 40 45 50
TIME (μs)
3080 G15
Turn-On Response
5
4
3
2
1
RSET = 100k
0
CSET = 0
RLOAD = 1Ω
2.0
COUT = 2.2μF CERAMIC
1.5
1.0
0.5
0
0 1 2 3 4 5 6 7 8 9 10
TIME (μs)
3080 G27
3080fb
5
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