LT1528 データシートの表示（PDF） - Linear Technology
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LT1528 Datasheet PDF : 12 Pages
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LT1528
TYPICAL PERFORMANCE CHARACTERISTICS
Guaranteed Dropout Voltage
1.0
= TEST POINTS
0.9
0.8
0.7
0.6
TJ ≤ 125°C
0.5
0.4
TJ ≤ 25°C
0.3
0.2
0.1
0
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
1528 TPC01
Quiescent Current
2000
1750
ILOAD = 0
RLOAD = ∞
1500
1250
1000
750
500
VSHDN = OPEN (HIGH)
250
VSHDN = 0V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1528 TPC04
GND Pin Current
100
TJ = 25°C
90
VOUT = VSENSE
80
*FOR VOUT = 3.3V
70
60
RL = 1.1Ω
50
ILOAD = 3A*
40
RL = 2.2Ω
30
ILOAD = 1.5A* RL = 4.7Ω
ILOAD = 700mA*
20
10
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1528 TPC07
4
Dropout Voltage
0.8
0.7
0.6
ILOAD = 3A
0.5
0.4 ILOAD = 700mA
0.3
ILOAD = 1.5A
0.2
0.1
0
–50 –25
ILOAD = 300mA
ILOAD = 10mA
0 25 50 75
TEMPERATURE (°C)
100 125
1528 TPC02
SENSE Pin Voltage
3.400
ILOAD = 1mA
3.375
3.350
3.325
3.300
3.275
3.250
3.225
3.200
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1528 TPC05
GND Pin Current
100 VIN = 3.3V
90 DEVICE IS OPERATING
IN DROPOUT
80
70
TJ = 125°C
60
TJ = 25°C
50
40
30
TJ = –50°C
20
10
0
0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
1528 TPC08
Quiescent Current
2.00
VIN = 4.3V
1.75 RL = ∞
1.50
1.25
1.00
0.75
0.50
VSHDN = OPEN
0.25
VSHDN = 0V
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1528 TPC03
GND Pin Current
7
TJ = 25°C
6
VOUT = VSENSE
*FOR VOUT = 3.3V
5
RL = 6.6Ω
ILOAD = 500mA*
4
RL = 11Ω
3
ILOAD = 300mA*
2
RL = 33Ω
ILOAD = 100mA*
1
RL = 330Ω: ILOAD = 10mA*
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1528 TPC06
SHDN Pin Threshold
(On-to-Off)
2.0
ILOAD = 1mA
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1528 TPC09
1528fb
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