参数资料
型号: LT1170CT#PBF06
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 11 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5
封装: PLASTIC, TO-220, 5 PIN
文件页数: 5/20页
文件大小: 278K
代理商: LT1170CT#PBF06
13
LT1170/LT1171/LT1172
117012ff
High Efficiency Constant Current Charger
Backlight CCFL Supply (see AN45 for details)
D2
MBR340
1170/1/2 TA11
INPUT VOLTAGE
> VBAT + 2V < 35V
C2
2.2
F
35V
TANTALUM
R7
22k
R8
1k
C3
0.47
F
V+
V
R4
1k
C4
200
F
25V
BATTERY
2V TO 25V
L2*
10
H, 1A
L1
100
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
CHRG
R6
78k
VIN
C
V
FB
VSW
GND
D1
1N5819
C4
0.01
F
LT1006
+
+
LT1171
C1
200
F
35V
1A
2N3904
+
GND
2
F
1170/1/2 TA12
D1
1N914
33pF
3kV
10
F
TANT
R3
10k
50k
INTENSITY
ADJUST
1N5818
L1**
300
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
R1
560
1k
LT1172
IN
V
VC
VSW
E2
E1
D2
1N914
LAMP
FB
L2***
0.02
F
A
B
Q1*
Q2*
+
TYPICAL APPLICATIO S
U
Positive-to-Negative Buck-Boost Converter
C4
1
F
VIN
10V TO
30V
1170/1/2 TA10
R3
5k
C5
100
F*
D3
1N4001
C2
0.1
F
VIN
VC
FB
VSW
LT1170
GND
VOUT
–12V
2A
REQUIRED IF INPUT LEADS
≥ 2"
PULSE ENGINEERING 92114, COILTRONICS 50-2-52
*
**
R2
1.24k
L1**
50
H
R5
470
, 1W
TO AVOID STARTUP PROBLEMS FOR INPUT VOLTAGES
BELOW 10V, CONNECT ANODE OF D3 TO VIN, AND
REMOVE R5. C1 MAY BE REDUCED FOR LOWER OUTPUT
CURRENTS. C1
≈ (500F)(IOUT).
FOR 5V OUTPUTS, REDUCE R3 TO 1.5k, INCREASE C2 TO
0.3
F, AND REDUCE R6 TO 100.
C3
2
F
D2
1N914
R4
47
C1
1000
F
D1
R6
470
R1
10.7k
+
相关PDF资料
PDF描述
LT1172CS 1.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO16
5962-9207901MPA 1.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, CDIP8
5962-9207901MPX 1.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, CDIP8
LT1172HVIQ#TRPBF 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PSSO5
LT1171CT#FLOW-06PBF 5.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5
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