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參數(shù)資料
| 型號(hào)： | LT1171MK |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 5.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, MBFM4 |
| 封裝： | METAL CAN, TO-3, 4 PIN |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 266K |
| 代理商： | LT1171MK |
12
LT1170/LT1171/LT1172
Positive-to-Negative Buck-Boost Converter
High Efficiency Constant Current Charger
Backlight CCFL Supply (see AN45 for details)
C4
1
μ
F
V
IN
10V TO
30V
1170/1/2 TA10
R3
5k
C5
100
μ
F*
D3
1N4001
C2
0.1
μ
F
V
IN
V
C
FB
V
SW
LT1170
GND
V
–12V
2A
REQUIRED IF INPUT LEADS
≥
2"
PULSE ENGINEERING 92114, COILTRONICS 50-2-52
TO AVOID STARTUP PROBLEMS FOR INPUT VOLTAGES
BELOW 10V, CONNECT ANODE OF D3 TO V
, AND
REMOVE R5. C1 MAY BE REDUCED FOR LOWER OUTPUT
CURRENTS. C1
≈
(500
μ
F)(I
).
FOR 5V OUTPUTS, REDUCE R3 TO 1.5k, INCREASE C2 TO
0.3
μ
F, AND REDUCE R6 TO 100
.
*
**
R2
1.24k
L1**
50
μ
H
R5
470
, 1W
C3
2
μ
F
D2
1N914
R4
47
C1
1000
μ
F
D1
R6
470
R1
10.7k
+
+
+
+
D2
MBR340
1170/1/2 TA11
INPUT VOLTAGE
> V
BAT
+ 2V < 35V
C2
2.2
μ
F
35V
TANTALUM
R7
22k
R8
1k
C3
0.47
μ
F
V
+
V
–
R4
1k
C4
200
μ
F
25V
BATTERY
2V TO 25V
L2*
10
μ
H, 1A
L1
100
μ
H, 1A
R5
0.05
R3
25k
R2
1k
RUN = 0V
SHUTDOWN = 5V
* L2 REDUCES RIPPLE CURRENT INTO
THE BATTERY BY ABOUT 20:1.
IT MAY BE OMITTED IF DESIRED.
I =
1.244V R4
R3 R5
= 1A AS SHOWN
R6
78k
V
IN
C
V
FB
V
SW
GND
D1
1N5819
C4
0.01
μ
F
LT1006
+
–
+
LT1171
C1
200
μ
F
35V
1A
2N3904
+
+
+
+
GND
2
μ
F
1170/1/2 TA12
D1
1N914
33pF
3kV
10
μ
F
TANT
R3
10k
50k
INTENSITY
ADJUST
1N5818
L1**
300
μ
H
INPUT VOLTAGE
4.5V TO 20V
Q1,Q2 = BCP56 OR MPS650/561
COILTRONICS CTX300-4
SUMIDA 6345-020 OR COILTRONICS 110092-1
A MODIFICATION WILL ALLOW OPERATION DOWN TO 4.5V. CONSULT FACTORY.
*
**
***
C6
1 F
μ
R1
560
1k
LT1172
IN
V
V
C
V
SW
E2
E1
D2
1N914
LAMP
FB
L2***
0.02
μ
F
A
B
Q1*
Q2*
+
+
TYPICAL APPLICATIO S
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PDF描述 |
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| LT1172M | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
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| LT1172MK | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1171MK/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
| LT1172 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators |
| LT1172C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators |
| LT1172CJ8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators |
| LT1172CK | 制造商:LINER 制造商全稱:Linear Technology 功能描述:100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators |
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