參數(shù)資料
型號(hào): LTC3426
廠商: Linear Technology Corporation
英文描述: 1.2MHz Step-Up DC/DC Converter in SOT-23
中文描述: 1.2MHz升壓型DC / DC轉(zhuǎn)換器采用SOT - 23
文件頁數(shù): 3/12頁
文件大?。?/td> 152K
代理商: LTC3426
3
LTC3426
3426f
TYPICAL PERFOR U
Oscillator Frequency
vs Temperature
TEMPERATURE (
°
C)
–50
1.0
F
1.1
1.2
1.3
1.40
–30
–10
10
30
3426 G01
50
70
90
V
IN
(V)
1.8
80
E
84
88
92
2.2
2.6
3
3.4
LT1108 TPC12
3.8
96
100
82
86
90
94
98
4.2
FIGURE 1 CIRCUIT
T
A
= 25
°
C
I
LOAD
= 150mA
V
OUT
= 5V
C
= 22
μ
F
L = 2.2
μ
H
V
IN
(V)
1.8
0.3
I
O
0.5
0.7
0.9
1.1
1.3
2.2
2.6
3
3.4
3426 G03
3.8
4.2
FIGURE 1 CIRCUIT
T
A
= 25
°
C
V
OUT
= 5V
C
= 22
μ
F
L = 2.2
μ
H
Efficiency vs V
IN
I
OUT(MAX)
vs V
IN
R
DS(ON)
vs Temperature
TEMPERATURE (
°
C)
–50
0.05
R
D
)
0.07
0.09
0.11
–25
0
25
50
3426 G04
75
0.13
0.15
0.06
0.08
0.10
0.12
0.14
100
V
OUT
= 2.5V
V
OUT
= 5V
V
OUT
= 3.3V
TEMPERATURE (
°
C)
–50
1.19
F
1.20
1.21
1.22
1.23
1.25
–25
0
25
50
3426 G05
75
100
1.24
FB Pin Voltage
V
500mV/DIV
SW
2V/DIV
100ns/DIV
V
IN
= 1.8V
V
OUT
= 3.3V
C
= 22
μ
F
L = 2.5
μ
H
3426 G06
I
L
200mA/DIV
Switching Waveforms
SW Pin Antiringing Operation
V
OUT
Transient Response
SW
1V/DIV
100ns/DIV
V
IN
= 1.8V
V
OUT
= 3.3V
3426 G07
I
L
50mA/DIV
40
μ
s/DIV
V
IN
= 1.8V
V
OUT
= 3.3V
C
= 22
μ
F
L = 2.5
μ
H
3426 G08
I
L
500mA/DIV
I
200mA/DIV
V
OUT
500mV/DIV
250mA
500mA
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