Datasheet

5
LT1120
1120fc
TYPICAL PERFOR A CE CHARACTERISTICS
UW
REGULATOR INPUT-OUTPUT DIFFERENTIAL (V)
1 5 10 15 20 25
SUPPLY CURRENT (mA)
10
1
0.1
0.01
1120 G07
I
OUT
= 100mA
I
OUT
= 1mA
V
OUT
= 5V
T
J
= –55°C TO 125°C
I
OUT
= 10mA
REGULATOR INPUT-OUTPUT DIFFERENTIAL (V)
1 0.1 0.2 0.3 0.4 0.5 0.6
SUPPLY CURRENT (mA)
10
1
0.1
0.01
1120 G08
I
OUT
= 100mA
I
OUT
= 1mA
T
J
= –55°C TO 125°C
I
OUT
= 10mA
REFERENCE OUTPUT CURRENT (mA)
–1.5 –1.0 –0.5 0 0.5 1.0 1.5
REFERENCE VOLTAGE CHANGE (mV)
1120 G09
4
3
2
1
0
–1
–2
–3
–4
TIME (ms)
0 20 40 60 80 100 120 140 160 180
OUTPUT
CURRENT (mA)
OUTPUT VOLTAGE
CHANGE (%)
1120 G12
0.1
0
–0.1
0
50
V
IN
= 15V
V
OUT
= 5V
REGULATOR OUTPUT CURRENT (mA)
FEEDBACK CURRENT (nA)
40
35
30
25
20
15
10
5
0
0.1 10 100 1000
1120 G11
1
T
J
= 125°C
T
J
= 25°C
T
J
= –55°C
Supply Current
Supply Current at Dropout
Reference Regulation
Feedback Pin Current
Regulator Thermal Regulation
LT1120 Turn-On Characteristic
INPUT VOLTAGE (V)
012345678
OUTPUT VOLTAGE (V)
1120 G13
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
0
V
OUT
= 5V
R
L
= 50Ω
R
L
= 500Ω
NO LOAD