LT1171C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1171C' PDF : 20 Pages View PDF
LT1170/LT1171/LT1172
TYPICAL APPLICATIO S
Forward Converter
VIN
20V TO 30V
D1
T1
R4
C2 1 M N
D2
VIN
D3
VSW
LT1170
D4
FB
GND
VC
Q1
R3
C3
R6
330Ω
C4
R5
1Ω
L1
25µH
C1 +
2000µF
VOUT
5V, 6A
R1
3.74k
R2
1.24k
1170/1/2 TA16
High Efficiency 5V Buck Converter
VIN
+ C1
330µF
35V
VSW
VIN
LT1170
FB
VC
C6
0.02µF
C4
0.1µF
R1
680Ω
GND
C5
0.03µF
C3 +
4.7µF
TANT
D1
MBR330p
MODE LOGIC
220pF
<0.3V = NORMAL MODE
>2.5V = SHUTDOWN
OPEN = BURST MODE
VC
VIN
MODE
DIODE
LT1432
GND
D2
1N4148
10µH
3A
+
100µF
16V
OPTIONAL
OUTPUT
FILTER
L1
50µH
R2*
0.013Ω
×
VOUT
5V
+ C2 3A**
V+
390µF
16V
VLIM
VOUT
* R2 IS MADE FROM PC BOARD
COPPER TRACES.
** MAXIMUM CURRENT IS DETERMINED
BY THE CHOICE OF LT1070 FAMILY.
SEE APPLICATION SECTION.
1170/1/2 TA17
14
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