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LT1529 データシートの表示（PDF） - Linear Technology

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LT1529
3A Low Dropout Regulators with Micropower Quiescent Current and Shutdown
Linear
Linear Technology 
LT1529 Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LT1529
LT 1529-3.3/LT 1529-5
TYPICAL PERFOR A CE CHARACTERISTICS
LT1529-3.3
GND Pin Current
5.0
TJ = 25°C
4.5 VOUT = VSENSE
4.0 *FOR VOUT = 3.3V
3.5
RLOAD = 6.6Ω
ILOAD = 500mA*
3.0
RLOAD = 330Ω
2.5
ILOAD = 10mA*
2.0
RLOAD = 11Ω
1.5
ILOAD = 300mA*
1.0
RLOAD = 33Ω
ILOAD = 100mA*
0.5
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
LT1529 • G10
LT1529-3.3
GND Pin Current
100
TJ = 25°C *FOR VOUT = 3.3V
90 VOUT = VSENSE
80
RLOAD = 1.1Ω
ILOAD = 3A*
70
60
50
40
RLOAD = 4.7Ω
ILOAD = 700mA*
30
RLOAD = 2.2Ω
20
ILOAD = 1.5A*
10
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
LT1529 • G13
GND Pin Current
100
VIN = 3.75V (LT1529)
90 VIN = 3.3V (LT1529-3.3)
80
VIN = 5V (LT1529-5)
DEVICE IS OPERATING
70 IN DROPOUT
60
TJ = 25°C
50
40
TJ = 125°C
TJ = – 50°C
30
20
10
0
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
LT1529 • G16
LT1529-5
GND Pin Current
5.0
TJ = 25°C
4.5 VOUT = VSENSE
4.0 *FOR VOUT = 5V
3.5
3.0 RLOAD = 500Ω
ILOAD = 10mA*
2.5
RLOAD = 10Ω
ILOAD = 500mA*
2.0
RLOAD = 16.6Ω
1.5
ILOAD = 300mA*
1.0
RLOAD = 50Ω
0.5
ILOAD = 100mA*
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
LT1529 • G11
LT1529-5
GND Pin Current
100
TJ = 25°C
90 VOUT = VSENSE
80 *FOR VOUT = 5V
RLOAD = 1.7Ω
ILOAD = 3A*
70
60 RLOAD = 7.1Ω
ILOAD = 700mA*
50
40
30
RLOAD = 3.3Ω
20
ILOAD = 1.5A*
10
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
LT1529 • G14
SHDN Pin Threshold
(On-to-Off)
2.0
1.8 ILOAD = 1mA
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1529 • G17
LT1529
GND Pin Current
5.0
TJ = 25°C
4.5 VOUT = VADJ
4.0
*FOR VOUT =
3.75V
3.5
3.0
2.5
2.0
RLOAD = 7.5Ω
ILOAD = 500mA*
RLOAD = 375Ω
ILOAD = 10mA*
RLOAD = 12.5Ω
ILOAD = 300mA*
1.5
1.0
RLOAD = 38Ω
ILOAD = 100mA*
0.5
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
LT1529 • G12
LT1529
GND Pin Current
100
TJ = 25°C
90 VOUT = VADJ
80 *FOR VOUT = 3.75V
70
RLOAD = 1.25Ω
ILOAD = 3A*
60
50
40
RLOAD = 5.3Ω
ILOAD = 700mA*
30
RLOAD = 2.5Ω
20
ILOAD = 1.5A*
10
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
LT1529 • G15
SHDN Pin Threshold
(Off-to-On)
2.0
1.8
ILOAD = 3A
1.6
1.4
1.2
ILOAD = 1mA
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1529 • G18
5

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