Datasheet

4
LT1120A
1120afa
REGULATOR OUTPUT CURRENT (mA)
0.1
0
FEEDBACK PIN CURRENT (nA)
40
1 1000
1120A G10
10
20
100
35
30
25
15
10
5
T
J
= –55°C
T
J
= 25°C
T
J
= 125°C
REGULATOR OUTPUT CURRENT (mA)
0.1
0.01
REGULATOR INPUT-OUTPUT DIFFERENTIAL (V)
1
1 1000
1120A G04
10
0.1
100
∆V
OUT
= 100mV
Regulator Minimum Load Current
Regulator Ripple Rejection
Supply Current at Dropout
Reference Regulation
TEMPERATURE (°C)
70
1
MINIMUM LOAD CURRENT (µA)
100
80 150
1120A G05
110
10
13090 100 120 140
RIPPLE FREQUENCY (Hz)
10
30
RIPPLE REJECTION (dB)
70
1k 100k
1120A G06
10k
100
65
60
55
50
45
40
35
I
OUT
= 100mA
I
OUT
= 10mA
V
IN
= 10VDC,
1V
P-P
V
OUT
= 5V
C
OUT
= 10µF
I
OUT
= 1mA
REGULATOR INPUT-OUTPUT DIFFERENTIAL (V)
0
0.01
SUPPLY CURRENT (mA)
0.1
10
0.2 0.6
1120A G08
0.3
1
0.1
0.5
I
OUT
= 100mA
I
OUT
= 10mA
I
OUT
= 1mA
0.4
REFERENCE OUTPUT CURRENT (mA)
–1.5
–4
REFERENCE VOLTAGE CHANGE (mV)
4
0 1.5
1120A G09
0.5
–1.0
3
2
1
0
–1
–2
–3
–0.5 1.0
Dropout Voltage
Supply Current
REGULATOR INPUT-OUTPUT DIFFERENTIAL (V)
1
0.01
SUPPLY CURRENT (mA)
0.1
10
10 25
1120A G07
15
1
5
20
I
OUT
= 100mA
I
OUT
= 10mA
V
OUT
= 5V
I
OUT
= 1mA
Feedback Pin Current Regulator Thermal Regulation
Turn-On Characteristic
TIME (ms)
0
OUTPUT CURRENT (mA)
0.1
180
1120A G11
80
0
–0.1
50
0 20 40 60 100 120 140 160
OUTPUT VOLTAGE CHANGE (%)
V
IN
= 15V
V
OUT
= 5V
INPUT VOLTAGE (V)
0
5.5
1120A G12
0
OUTPUT VOLTAGE (V)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
12345678
V
OUT
= 5V
NO LOAD
R
L
= 500Ω
R
L
= 50Ω
TYPICAL PERFOR A CE CHARACTERISTICS
UW