Datasheet

LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
9
3022fb
TYPICAL PERFORMANCE CHARACTERISTICS
No-Load Recovery Threshold No-Load Recovery Threshold Output Noise Spectral Density
RMS Output Noise vs Load
Current (10Hz to 100kHz) Start-Up from Shutdown Transient Response
Input Ripple Rejection Line Regulation Load Regulation
TEMPERATURE (°C)
–50
0
INPUT RIPPLE REJECTION (dB)
10
30
40
50
100
70
0
50
75
3022 G23
20
80
90
60
–25
25
100
125
V
IN
= 1.5V + 0.5V
P-P
RIPPLE AT 120Hz
V
OUT
= 0.5V
C
OUT
= 10µF
I
L
= 1A
TEMPERATURE (°C)
–50
–1.5
LINE REGULATION (mV)
–1.3
–0.9
–0.7
–0.5
0.5
–0.1
0
50
75
3022 G24
–1.1
0.1
0.3
–0.3
–25
25
100
125
∆V
IN
= 1.15V TO 10V
V
OUT
= 0.2V
I
L
= 1mA
TEMPERATURE (°C)
–50
–1.0
LOAD REGULATION (mV)
–0.8
–0.4
–0.2
0
1.0
0.4
0
50
75
3022 G25
–0.6
0.6
0.8
0.2
–25
25
100
125
V
IN
= 1.15V
V
OUT
= 0.5V
∆I
L
= 1mA TO 1A
LOAD REGULATION NUMBER REFERS
TO CHANGE IN THE 200mV REFERENCE
VOLTAGE
OUTPUT OVERSHOOT (%)
0
0
OUTPUT SINK CURRENT (mA)
5
10
15
20
25
30
T
J
= 25°C
5 10 15 20
3022 G26
TEMPERATURE (°C)
–50
OUTPUT OVERSHOOT (%)
8
10
12
25 75
3022 G27
6
4
–25 0
50 100 125
2
0
I
OUT(SINK)
= 5mA
I
OUT(SINK)
= 1mA
FREQUENCY (Hz)
0.1
OUTPUT NOISE SPECTRAL DENSITY (µV/√Hz)
1
10 1k 10k 1M100k
3022 G28
0.001
0.01
100
10
V
OUT
= 1.2V
I
L
= 1A
T
J
= 25°C
C
OUT
= 47µF
C
OUT
= 10µF
LOAD CURRENT (mA)
0.01
80
OUTPUT NOISE (µV
RMS
)
100
120
140
160
0.1 1 10 100 1000
3022 G29
60
40
20
0
180
200
V
OUT
= 1.2V
C
OUT
= 10µF
T
J
= 25°C
V
OUT
0.5V/DIV
50µs/DIV
3022 G30
R
L
= 1.2Ω
V
IN
= 1.5V
V
OUT
= 1.2V
C
OUT
= 10µF
V
SHDN
1V/DIV
V
OUT
50mV/DIV
50µs/DIV
3022 G31
V
IN
= 1.5V
V
OUT
= 1.2V
I
OUT
= 100mA to 1A
C
OUT
= 22µF
t
RISE
= t
FALL
= 100ns
I
OUT
500mA/DIV