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參數(shù)資料
| 型號(hào)： | LH1605C |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 5 Amp, High Efficiency Switching Regulator |
| 中文描述： | 5安培，高效率開關(guān)穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 3/4頁(yè) |
| 文件大?。?/td> | 120K |
| 代理商： | LH1605C |
TL/K/10114–3
Minimum V
IN
b
V
OUT
e
5V for Proper Operation
R
S
e
2
c
10
3
(V
OUT
b
2.5)
2.5
V
IN
e
10
b
18V
V
OUT
e
5V
I
OUT
e
3A (Max)
I
OUT
e
1A (Min)
h
70%
Load Reg.
e
50 mV
Line Reg.
e
10 mV
Ripple
e
20 mV
Power Derating Curve
TL/K/10114–4
Frequency vs Timing
Capacitance
TL/K/10114–5
Design Equations
Efficiency (
h
)
e
P
OUT
c
100
P
IN
Transistor DC Losses (P
T
)
e
I
OUT
c
V
S
#
t
ON
t
ON
a
t
OFF
J
Diode DC Losses (P
D
)
e
I
OUT
c
V
F
#
t
OFF
t
ON
a
t
OFF
J
Drive Circuit Losses (D
L
)
e
V
IN2
300
c
t
ON
t
ON
a
t
OFF
Switching Losses Transistor (P
S
)
e
V
IN
c
I
OUT
c
t
r
a
t
f
2(t
ON
a
t
OFF
Transistor Duty Cycle
e
t
ON
t
ON
a
t
OFF
e
V
OUT
V
IN
Diode Duty Cycle
e
t
OFF
t
ON
a
t
OFF
e
1
b
V
OUT
V
IN
Power Inductor (P
L
)
e
I
OUT2
c
R
L
(Winding Resistance)
Efficiency (
h
)
e
V
OUT
I
OUT
V
OUT
I
OUT
a
P
T
a
P
D
a
D
L
a
P
S
a
P
L
c
100%
3
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