LT1521 Просмотр технического описания (PDF) - Linear Technology
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LT1521 Datasheet PDF : 16 Pages
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LT1521/LT1521-3
LT1521-3.3/LT1521-5
ELECTRICAL CHARACTERISTICS
PARAMETER
Regulated Output Voltage
(Note 4)
Line Regulation
Load Regulation
Dropout Voltage (Note 6)
Ground Pin Current (Note 7)
Adjust Pin Bias Current (Notes 5, 8)
Shutdown Threshold
Shutdown Pin Current (Note 9)
Quiescent Current in Shutdown (Note 10)
Ripple Rejection
Current Limit
CONDITIONS
LT1521-3
VIN = 3.5V, IOUT = 1mA, TJ = 25°C
4V < VIN < 20V, 1mA < IOUT < 300mA q
LT1521-3.3
VIN = 3.8V, IOUT = 1mA, TJ = 25°C
4.3V < VIN < 20V, 1mA < IOUT < 300mA q
LT1521-5
VIN = 5.5V, IOUT = 1mA, TJ = 25°C
6V < VIN < 20V, 1mA < IOUT < 300mA q
LT1521 (Note 5) VIN = 4.3V, IOUT = 1mA, TJ = 25°C
4.8V < VIN < 20V, 1mA < IOUT < 300mA q
LT1521-3
∆VIN = 4.5 to 20V, IOUT = 1mA
q
LT1521-3.3
∆VIN = 4.8 to 20V, IOUT = 1mA
q
LT1521-5
∆VIN = 5.5 to 20V, IOUT = 1mA
q
LT1521 (Note 5) ∆VIN = 4.3 to 20V, IOUT = 1mA
q
LT1521-3
∆ILOAD = 1mA to 300mA, TJ ≤ 25°C
LT1521-3.3
∆ILOAD = 1mA to 300mA, TJ ≤ 25°C
LT1521-5
∆ILOAD = 1mA to 300mA, TJ ≤ 25°C
LT1521 (Note 5) ∆ILOAD = 1mA to 300mA, TJ ≤ 25°C
LT1521-3
∆ILOAD = 1mA to 300mA, TJ >25°C
LT1521-3.3
∆ILOAD = 1mA to 300mA, TJ > 25°C
LT1521-5
∆ILOAD = 1mA to 300mA, TJ > 25°C
LT1521 (Note 5) ∆ILOAD = 1mA to 300mA, TJ > 25°C
ILOAD = 1mA, TJ = 25°C
ILOAD = 1mA
q
ILOAD = 50mA, TJ = 25°C
ILOAD = 50mA
q
ILOAD = 100mA, TJ = 25°C
ILOAD = 100mA
q
ILOAD = 150mA, TJ = 25°C
ILOAD = 150mA
q
ILOAD = 300mA, TJ = 25°C
ILOAD = 300mA
q
ILOAD = 0mA
q
ILOAD = 1mA
q
ILOAD = 10mA
q
ILOAD = 50mA
q
ILOAD = 100mA
q
ILOAD = 150mA
q
ILOAD = 300mA
q
TJ = 25°C
VOUT = Off to On
q
VOUT = On to Off
q
VSHDN = 0V
q
VIN = VOUT (NOMINAL) + 1V, VSHDN = 0V
q
VIN – VOUT = 1V(Avg), VRIPPLE = 0.5VP–P,
fRIPPLE = 120Hz, ILOAD = 150mA
VIN – VOUT = 7V, TJ = 25°C
VIN = VOUT (NOMINAL) + 1.5V, ∆VOUT = – 0.1V
q
MIN
2.950
2.900
3.250
3.200
4.925
4.850
3.695
3.640
0.25
50
320
TYP
3.000
3.000
3.300
3.300
5.000
5.000
3.750
3.750
1.5
1.5
1.5
1.5
– 20
– 20
– 25
– 20
– 20
– 20
– 25
– 20
130
290
350
400
500
12
65
300
0.8
1.4
2.2
6.5
50
1.20
0.75
2.0
6
58
400
400
MAX
3.050
3.100
3.350
3.400
5.075
5.150
3.805
3.860
20
20
20
20
– 30
– 30
– 45
– 30
– 55
– 55
– 75
– 55
170
250
350
450
420
550
470
600
600
750
20
100
450
1.5
2.5
4.0
12.0
100
2.80
5.0
12
UNITS
V
V
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
mA
mA
mA
mA
nA
V
V
µA
µA
dB
800
mA
mA
3
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