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參數(shù)資料
| 型號： | LT3412AIFE#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 4 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.4 MM, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 267K |
| 代理商： | LT3412AIFE#TR |
LTC3412A
4
3412afb
INPUT VOLTAGE (V)
2.5
94
92
90
88
86
84
82
80
4.0
3412A GO4
3.0
3.5
4.5
5.0
3412A GO5
3412A GO8
3412A GO7
3412A GO9
EFFICIENCY
(%)
LOAD CURRENT (A)
0
Δ
V
OUT
/V
OUT
(%)
0
– 0.1
– 0.2
– 0.3
– 0.4
– 0.5
– 0.6
0.5
1.0
1.5
2.0
3412A GO6
2.5
3.0
0.1A
1A
3A
5
μs/DIV
5
μs/DIV
40
μs/DIV
VOUT
20mV/DIV
INDUCTOR
CURRENT
1A/DIV
VOUT
100mV/DIV
INDUCTOR
CURRENT
2A/DIV
FORCED
CONTINUOUS
20mV/DIV
PULSE
SKIPPING
20mV/DIV
BURST
MODE
20mV/DIV
VIN = 3.3V
VOUT = 2.5V
F = 1MHz
LOAD STEP = 50mA TO 2A
FIGURE 4 CIRCUIT
VIN = 3.3V
VOUT = 2.5V
FIGURE 4 CIRCUIT
EFFICIENCY
(%)
96
95
94
93
92
91
90
89
88
87
FREQUENCY (MHz)
0
4.0
1.0
2.0
3.0
0.5
1.5
2.5
3.5
0.22
μH
0.47
μH
1
μH
FIGURE 4 CIRCUIT
VIN = 3.3V
FIGURE 4 CIRCUIT
VIN = 3.3V
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Burst Mode Operation
Load Step Transient Burst Mode
Operation
Efficiency vs Input Voltage
Efficiency vs Frequency
Load Regulation
Output Voltage Ripple
Efficiency vs Load Current
Efficiency vs Load Current, Burst
Mode Operation
Efficiency vs Load Current,
Forced Continuous Operation
LOAD CURRENT (A)
0.01
EFFICIENCY
(%)
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY
(%)
100
95
90
85
80
75
70
65
60
55
50
0.1
1
10
LOAD CURRENT (A)
0.01
0.1
1
10
LOAD CURRENT (A)
0.01
0.1
1
10
3412A GO1
EFFICIENCY
(%)
100
90
80
70
60
50
40
30
20
10
0
3412A GO2
3412A GO3
Burst Mode
OPERATION
FORCED
CONTINUOUS
VIN = 3.3V
VOUT = 2.5V
FIGURE 4 CIRCUIT
VOUT = 2.5V
FIGURE 4 CIRCUIT
VOUT = 2.5V
FIGURE 4 CIRCUIT
VIN = 5V
VIN = 3.3V
VIN = 5V
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