Datasheet

7
LT3020/LT3020-1.2/
LT3020-1.5/LT3020-1.8
3020fc
TEMPERATURE (°C)
–50
MINIMUM INPUT VOLTAGE (V)
1.1
1.0
0.9
0.8
0.6
0.7
0.5
0.4
0.3
0.2
0.1
0
3020 G16
250–25 50 75
125100
I
L
= 100mA
TEMPERATURE (°C)
–50
LOAD REGULATION (mV)
1.0
0.8
0.6
0.2
0.4
0
–0.2
–0.4
–0.6
–0.8
–1.0
3020 G17
250–25 50 75
125100
V
IN
= 1.15V
V
OUT
= 0.5V
*LOAD REGULATION NUMBER REFERS
TO CHANGE IN THE 200mV REFERENCE
VOLTAGE
Minimum Input Voltage
Load Regulation
∆I
L
= 1mA to 100mA
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50
RIPPLE REJECTION (dB)
100
90
80
60
70
50
40
30
20
10
0
3020 G15
250–25 50 75
125100
V
IN
= 1.5V + 0.5V
P-P
RIPPLE AT f = 120Hz
V
OUT
= 0.5V
I
L
= 100mA
Transient Response
V
OUT
50mV/DIV
I
OUT
100mA/DIV
50µs/DIV
3020 G21
I
OUT
= 10mA TO 100mA
V
OUT
= 1.5V
Input Ripple Rejection
Current Limit
TEMPERATURE (°C)
–50
0
3020 G12
250–25 50 75
125100
V
OUT
= 0V
V
IN
= 1.7V
V
IN
= 10V
CURRENT LIMIT (mA)
500
450
400
300
350
250
200
150
100
50
0
Reverse Output Current
Input Ripple Rejection
TEMPERATURE (°C)
–50
0
3020 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
FREQUENCY (Hz)
10
RIPPLE REJECTION (dB)
20
30
60
50
40
70
10 1k 10k 1M
3020 G14
0
100
100k
V
IN
= 1.5V + 50mV
RMS
RIPPLE
V
OUT
= 0.5V
I
L
= 100mA
C
OUT
= 2.2µF
C
OUT
= 10µF
Output Noise Spectral Density
FREQUENCY (Hz)
10
OUTPUT NOISE SPECTRAL DENSITY (µV/√Hz)
10
1
0.1
0.01
1k 100k 1M100 10k
3020 G18
V
OUT
= 1.2V
I
L
= 100mA
C
OUT
= 2.2µF