LT1316 查看數據表（PDF） - Linear Technology
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LT1316 Datasheet PDF : 16 Pages
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TYPICAL APPLICATIONS N
LT1316
– 48V
Nonisolated – 48V to 5V Flyback Converter
C2
0.022µF
Q3
2N3904
T1
10:1:1
D1
1N5817
3
2
L1
L3
4
1
D2
1N4148
C3
47µF
7
C1
0.1µF
R1
1.3M
R4
2M
6
7
VIN
SHDN
Q1
5
SW
R2
1.30M
1%
R3
604k
1%
1 LB0 LT1316
FB 8
2 LBI
RSET GND
3
4
R5
69.8k
1%
L2 D3
6 1N4148
VA
C4
47µF
Q2
R7
MPSA92 432k, 1%
R6
121k
1%
VOUT
5V
50mA
T1 = DALE LPE-4841-A313 (605-665-9301)
L PRI: 2mH
R DS(ON): 4.3Ω AT VGS = 2.5V
R6, Q2,R7 MUST BE PLACED NEXT
TO THE FB PIN
IIN = 190µA WHEN
VIN = 48V, ILOAD = 1mA
1316 • TA03
Efficiency vs Load Current
90
80
36VIN
70
48VIN
60
72VIN
50
40
1
10
LOAD CURRENT (mA)
100
1316 TA04
11
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