LTC1625I 데이터 시트보기 (PDF) - Linear Technology
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LTC1625I Datasheet PDF : 24 Pages
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LTC1625
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Load Current
100
BURST
90
MODE
OPERATION
80
CONTINUOUS
MODE
70
60
50
0.001
VIN = 10V
VOUT = 5V
EXTVCC = VOUT
0.01
0.1
1
10
LOAD CURRENT (A)
1625 G01
Load Regulation
0
FIGURE 1 CIRCUIT
– 0.05
– 0.10
– 0.15
– 0.20
– 0.25
0
1
2
3
4
5
LOAD CURRENT (A)
1625 G04
Input and Shutdown Current
vs Input Voltage
1000
50
EXTVCC OPEN
800
40
600
30
SHUTDOWN
400
20
200
EXTVCC = 5V
10
0
0
0 5 10 15 20 25 30 35
INPUT VOLTAGE (V)
1625 G07
Efficiency vs Input Voltage,
VOUT = 5V
100
FIGURE 1 CIRCUIT
95
ILOAD = 2A
90
ILOAD = 200mA
85
80
75
70
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
1625 G02
ITH Pin Voltage vs Load Current
3.0
FIGURE 1 CIRCUIT
VIN = 20V
2.5 VOUT = 5V
2.0
CONTINUOUS
MODE
1.5
1.0
Burst Mode
OPERATION
0.5
0
01
2 34 5
LOAD CURRENT (A)
67
1625 G05
INTVCC Load Regulation
0
Efficiency vs Input Voltage,
VOUT = 3.3V
100
FIGURE 1 CIRCUIT
95
ILOAD = 2A
90
85
ILOAD = 200mA
80
75
70
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
1625 G02
VIN – VOUT Dropout Voltage
vs Load Current
400
FIGURE 1 CIRCUIT
VOUT = 5V – 5% DROP
300
200
100
0
0
1
2
3
4
5
LOAD CURRENT (A)
1625 G06
EXTVCC Switch Drop
vs INTVCC Load Current
500
– 0.5
400
–1.0
300
–1.5
200
– 2.0
100
– 2.5
0
10
20
30
40
50
INTVCC LOAD CURRENT (mA)
1625 G08
0
0
10
20
30
40
50
INTVCC LOAD CURRENT (mA)
1625 G09
4
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