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參數(shù)資料
| 型號： | LT1107M |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| 中文描述： | 微功率DC / DC轉(zhuǎn)換可調(diào)和固定5V，12V的 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 254K |
| 代理商： | LT1107M |
5
LT1107
I
LIM
(Pin 1):
Connect this pin to V
IN
for normal use. Where
lower current limit is desired, connect a resistor between
I
LIM
and V
IN
. A 220
resistor will limit the switch current
to approximately 400mA.
V
IN
(Pin 2):
Input Supply Voltage.
SW1 (Pin 3):
Collector of Power Transistor. For step-up
mode connect to inductor/diode. For step-down mode
connect to V
IN
.
SW2 (Pin 4):
Emitter of Power Transistor. For step-up
mode connect to ground. For step-down mode connect to
inductor/diode. This pin must never be allowed to go more
than a Schottky diode drop below ground.
GND (Pin 5):
Ground.
AO (Pin 6):
Auxiliary Gain Block (GB) Output. Open collector,
can sink 300
μ
A.
SET (Pin 7):
GB Input. GB is an op amp with positive input
connected to SET pin and negative input connected to
1.25V reference.
FB/SENSE (Pin 8):
On the LT1107 (adjustable), this pin
goes to the comparator input. On the LT1107-5 and
LT1107-12, this pin goes to the internal application resistor
that sets output voltage.
PIU
FU
U
C
U
S
O
TI
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Minimum/Maximum Frequency
vs ON Time, Step-Down Mode
Minimum/Maximum Frequency
vs ON Time, Step-Up Mode
Duty Cycle
Step-Down Mode
TEMPERATURE (°C)
–55
D
–15
25
45
125
1107 G13
–35
5
65
85 105
70
65
60
55
50
45
40
35
TEMPERATURE (°C)
–55
O
–15
25
45
125
1107 G16
–35
5
65
85 105
5.3
5.2
5.1
5.0
4.9
4.8
4.7
TEMPERATURE (°C)
–55
O
–15
25
45
125
1107 G17
–35
5
65
85 105
12.20
12.15
12.10
12.05
12.00
11.95
11.90
11.85
11.80
LT1107-5
Output Voltage
LT1107-12
Output Voltage
LT1107
Feedback Voltage
TEMPERATURE (°C)
–55
T
–15
25
45
125
1107 G18
–35
5
65
85 105
1.30
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
ON TIME (
μ
s)
4
F
100
90
80
70
60
50
40
30
5
9
11
1107 G11
8
13 14
6
7
10
12
–55
°
C
≤
T
A
≤
125
°
C
0
°
C
≤
T
A
≤
70
°
C
ON TIME (
μ
s)
6
F
100
90
80
70
60
50
40
30
7
11
13
1107 G12
10
15 16
8
9
12
14
–55
°
C
≤
T
A
≤
125
°
C
0
°
C
≤
T
A
≤
70
°
C
T
A
= 25
°
C
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| LT1107MJ8 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 2V to 30V 8-Pin CDIP |
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| LT1108 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1108-12 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
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