參數(shù)資料
型號: LT1105I
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 抗輻射高效,5安培開關(guān)穩(wěn)壓器
文件頁數(shù): 27/32頁
文件大小: 452K
代理商: LT1105I
27
LT1103/LT1105
TYPICAL APPLICATIO
N
S
OSC
C
OSC
LT1103/LT1105
LT1103 TA05
CHOOSE 20kHz
f
OSC
200kHz
C
OSC
= f
OSC
OSC
( )(
SF
I
DC
0.66
66%
2.5V f
OSC
100
μ
A
(
)
)
OVLO
R2
LT1105
LT1103 TA09
R1
OVLO
TH
)
CHOOSE OVLO
TH
LET R1 = 5k
R2 = –1 R1
2.5V
OVLO
TH
Setting Oscillator Frequency
Setting Overvoltage Lockout
Increasing Oscillator
Maximum Duty Cycle
Decreasing Oscillator
Maximum Duty Cycle
Synchronizing Oscillator Frequency
to an External Clock
OSC
C
OSC
LT1103/LT1105
LT1103 TA06
R
I1
CHOOSE 0.66
DC
1.0
SOLVE FOR X
X =
0
X
1.5
I1 = X I = X 100
μ
A
R =
C
OSC
= 2100
(9DC – 6)
2
3.25V
I1
OSC
μ
A
)(
)
3X + 2X
2
9
(
)
OSC
C
OSC
LT1105
LT1103 TA07
R
I1
5V
CHOOSE 0
DC
0.66
SOLVE FOR X
X =
0
X
3
I1 = X I = X 100
μ
A
R =
C
OSC
= 2100
(6 – 9DC)
2
1.75V
I1
OSC
μ
A
)(
)
3X – 2X
2
9
(
)
OSC
C
OSC
LT1103/LT1105
LT1103 TA08
1
μ
F
500ns
ISOLATION
BOUNDARY
5V
0V
1:0.5
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