Datasheet

LT3021/LT3021-1.2/
LT3021-1.5/LT3021-1.8
7
3021fc
TYPICAL PERFORMANCE CHARACTERISTICS
GND Pin Current GND Pin Current GND Pin Current
GND Pin Current vs I
LOAD
SHDN Pin Threshold SHDN Pin Input Current
SHDN Pin Input Current Current Limit Reverse Output Current
INPUT VOLTAGE (V)
0
GND PIN CURRENT (mA)
8
7
6
4
5
3
2
1
0
8
3021 G06
213579
4
6
10
V
OUT
= 1.2V
T
J
= 25°C
R
L
= 12Ω
I
L
= 100mA
R
L
= 2.4Ω
I
L
= 500mA
R
L
= 4.8Ω
I
L
= 250mA
R
L
= 24Ω
I
L
= 50mA
R
L
= 120Ω
I
L
= 10mA
R
L
= 1.2k, I
L
= 1mA
INPUT VOLTAGE (V)
GND PIN CURRENT (mA)
8
6
4
7
5
3
2
1
0
2468
3021 G24
10103579
V
OUT
= 1.5V
T
J
= 25°C
R
L
= 3Ω
I
L
= 500mA
R
L
= 6Ω
I
L
= 250mA
R
L
= 15Ω
I
L
= 100mA
R
L
= 30Ω
I
L
= 50mA
R
L
= 1.5k, I
L
= 1mA
R
L
= 150Ω
I
L
= 10mA
INPUT VOLTAGE (V)
GND PIN CURRENT (mA)
9
8
6
4
7
5
3
2
1
0
2468
3021 G25
10103579
V
OUT
= 1.8V
T
J
= 25°C
R
L
= 3.6Ω
I
L
= 500mA
R
L
= 7.2Ω
I
L
= 250mA
R
L
= 18Ω
I
L
= 100mA
R
L
= 36Ω
I
L
= 50mA
R
L
= 1.8k, I
L
= 1mA
R
L
= 180Ω
I
L
= 10mA
LOAD CURRENT (mA)
0
GND PIN CURRENT (mA)
10
9
8
6
7
5
4
3
2
1
0
3021 G07
200100 300
400
500
V
SHDN
= 10V
TEMPERATURE (°C)
–50
SHDN PIN THRESHOLD (V)
1.0
0.9
0.8
0.6
0.7
0.5
0.4
0.3
0.2
0.1
0
3021 G08
250–25 50 75
125100
I
L
= 1mA
SHDN PIN VOLTAGE (V)
0
SHDN PIN INPUT CURRENT (μA)
5.0
4.5
4.0
3.0
3.5
2.5
2.0
1.5
1.0
0.5
0
8
3021 G09
213579
4
6
10
TEMPERATURE (°C)
–50
0
3021 G10
250–25 50 75
125100
V
SHDN
= 10V
SHDN PIN INPUT CURRENT (μA)
5
4
3
2
1
0
TEMPERATURE (°C)
–50
0
3021 G12
250–25 50 75
125100
V
OUT
= 0V
V
IN
= 1.7V
V
IN
= 10V
CURRENT LIMIT (A)
2.0
1.8
1.6
1.2
1.4
1.0
0.8
0.6
0.4
0.2
0
TEMPERATURE (°C)
–50
0
3021 G13
250–25 50 75
125100
V
IN
= 0V
V
OUT
= 1.2V
REVERSE OUTPUT CURRENT (μA)
500
450
400
300
350
250
200
150
100
50
0