Datasheet

6
LT1021
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Quiescent Current LT1021-5
INPUT VOLTAGE (V)
0
0
INPUT CURRENT (mA)
0.2
0.6
0.8
1.0
3530
1.8
LT1021 G10
0.4
5 10152025 40
1.2
1.4
1.6
T
J
= – 55°C
T
J
= 25°C
T
J
= 125°C
I
OUT
= 0
Sink Mode* Current Limit
LT1021-5
OUTPUT VOLTAGE (V)
0
0
CURRENT INTO OUTPUT (mA)
10
30
40
50
4
8
10 18
LT1021 G11
20
26
12
14
16
60
V
IN
= 8V
*NOTE THAT AN INPUT VOLTAGE IS REQUIRED
FOR 5V UNITS.
Thermal Regulation LT1021-5
TIME (ms)
OUTPUT CHANGE (mV)
–1.0
– 0.5
140
LT1021 G12
20
60
100
0
0
40
80
120
LOAD
REGULATION
THERMAL
REGULATION
I
LOAD
= 10mA
V
IN
= 25V
∆POWER = 200mW
Load Transient Response
LT1021-5, C
LOAD
= 1000pF
Load Transient Response
LT1021-5, C
LOAD
= 0
TIME (µs)
OUTPUT CHANGE (50mV/DIV)
2
LT1021 G13
102413
3
0
4
I
SOURCE
= 2-10mA
I
SOURCE
= 0.5mA
I
SINK
= 0
I
SINK
= 0.2mA
I
SINK
= 2-10mA
50mV 50mV
∆I
SINK
= 100µA
P-P
∆I
SOURCE
= 100µA
P-P
I
SOURCE
= 0
Output Noise 0.1Hz to 10Hz
LT1021-5
TIME (µs)
OUTPUT CHANGE (20mV/DIV)
10
LT1021 G14
501020515
15
0
20
I
SOURCE
= 2-10mA
I
SOURCE
= 0.2mA
I
SINK
= 0
I
SINK
= 0.2mA
I
SINK
= 2-10mA
20mV 20mV
∆I
SINK
= 100µA
P-P
∆I
SOURCE
= 100µA
P-P
I
SOURCE
= 0
TIME (MINUTES)
035
LT1021 G15
12
46
OUTPUT VOLTAGE NOISE (5µV/DIV)
5µV (1ppm)
FILTERING = 1 ZERO AT 0.1Hz
2 POLES AT 10Hz
Load Regulation
LT1021-7, LT1021-10
Output Voltage Temperature
Drift LT1021-7
TEMPERATURE (°C)
–50
6.997
6.998
OUTPUT VOLTAGE (V)
7.000
7.003
0
50
75
LT1021 G16
6.999
7.002
7.001
–25
25
100
125
OUTPUT CURRENT (mA)
–10
OUTPUT CHANGE (mV)
1
3
5
4
2
0
–2
–4
6
LT1021 G17
–1
–3
–5
–6–8 –4 0 4 8
–2
2
10
V
IN
= 12V
SOURCING SINKING
Quiescent Current LT1021-7
INPUT VOLTAGE (V)
0
0
INPUT CURRENT (mA)
0.2
0.6
0.8
1.0
3530
1.8
LT1021 G18
0.4
5 10152025 40
1.2
1.4
1.6
T
J
= – 55°C
T
J
= 25°C
T
J
= 125°C
I
OUT
= 0