LT1021 Просмотр технического описания (PDF) - Linear Technology
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LT1021 Datasheet PDF : 16 Pages
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LT1021
TYPICAL PERFOR A CE CHARACTERISTICS
Shunt Characteristics LT1021-10
1.8
INPUT PIN OPEN
1.6
1.4
1.2
1.0
TJ = – 55°C
0.8
0.6
TJ = 25°C
0.4
TJ = 125°C
0.2
0
0
2
4
6
8 10 12
OUTPUT TO GROUND VOLTAGE (V)
1021 G28
Shunt Mode Current Limit
LT1021-10
60
INPUT PIN OPEN
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18
OUTPUT VOLTAGE (V)
1021 G29
Load Transient Response
LT1021-10, CLOAD = 0
ISOURCE = 0
10mV
ISINK = 0.6mA
50mV
ISINK = 0.8mA
ISOURCE = 0.2mA
ISINK = 1mA
ISOURCE = 2-10mA
∆ISOURCE = 100µAP-P
ISINK = 2-10mA
∆ISINK = 100µAP-P
0 12 34 012 34
TIME (µs)
NOTE VERTICAL SCALE CHANGE
BETWEEN SOURCING AND SINKING
1021 G31
Load Transient Response
LT1021-10, CLOAD = 1000pF
ISOURCE = 0
5mV
ISINK = 0.8mA
20mV
ISINK = 1.2mA
ISOURCE = 0.5mA
ISINK = 1.4mA
ISOURCE = 2-10mA
ISINK = 2-10mA
∆ISOURCE = 100µAP-P ∆ISINK = 100µAP-P
0 12 34 012 34
TIME (µs)
NOTE VERTICAL SCALE CHANGE
BETWEEN SOURCING AND SINKING
1021 G32
Thermal Regulation LT1021-10
VIN = 30V
∆POWER = 200mW
LOAD
0
REGULATION
– 0.5
–1.0
–1.5
THERMAL
REGULATION*
ILOAD = 10mA
0 20 40 60 80 100 120 140
TIME (ms)
*INDEPENDENT OF TEMPERATURE COEFFICIENT
1021 G30
Output Noise 0.1Hz to 10Hz
LT1021-10
FILTERING = 1 ZERO AT 0.1Hz
2 POLES AT 10Hz
10µV (1ppm)
01
2
3
4
TIME (MINUTES)
56
1021 G33
8
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