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參數(shù)資料
| 型號(hào)： | L4545E |
| 文件頁數(shù)： | 3/10頁 |
| 文件大小： | 92K |
| 代理商： | L4545E |
ELECTRICALCHARACTERISTICS
(V
S
= 14V; -40
°
C < T
j
< 125
°
C unless otherwisespecified)
Symbol
V
O
V
O
V
O
Parameter
Test Condition
Min.
4.95
4.90
4.75
Typ.
5
5
Max.
5.05
5.10
5.25
Unit
V
V
V
Output Voltage
Output Voltage
Output Voltage
T
J
= 25
°
C; I
O
= 1mA
6V < V
IN
< 28V,1mA < I
O
<50mA
V
IN
=40V;
T<1s5mA<I
O
<100mA
I
O
= 10mA
I
O
= 50mA
I
O
= 100mA
V
IN
= 4V, I
O
= 35mA
V
DP
Dropout Voltage
0.1
0.2
0.3
0.25
0.4
0.5
0.4
V
V
V
V
V
IO
Input to Output Voltage
Difference in Undervoltage
Condition
Max Output Leakage
Line Regulation
Load Regulation
Current Limit
I
outh
**
V
OL
V
OLO
I
LIM
V
IN
= 25V, V
O
= 5.5V
6V < V
IN
< 28V; I
O
= 1mA
1mA < I
O
< 100mA
V
O
= 4.5V
V
O
= 4.5V, T
J
= 25
°
C
V
O
= 0V (note1)
I
O
= 0.3mA; T
J
< 100
°
C
I
O
= 100mA
20
50
80
20
30
400
400
μ
A
mV
mV
mA
mA
mA
μ
A
mA
105
120
200
100
200
I
QSE
I
Q
Quiescent Current
Quiescent Current
300
5
** Withthis test we guaranteethat with no outputcurrent the output voltage will not exceed 5.5V
RESET
V
RT
V
RTH
t
RD
V
RL
I
RH
V
CTth
V
CTth, hy
Reset Thereshold Voltage
Reset Thereshold Hysteresis
Reset Pulse Delay
Reset Output Low Voltage
ResetOutputHigh Leakage Current V
RES
= 5V
Delay Comparator Thereshold
Delay Comparator Thereshold
Hysteresis
V
O
-0.5V
100
100
V
50
55
200
180
0.4
1
mV
ms
V
μ
A
V
mV
C
T
= 100nF; T
R
≥
100
μ
s
R
RES
= 10K
to V
O
V
S
≥
1.5V
2
100
SENSE
V
st
V
sth
V
SL
Sense Low Thereshold
Sense Thereshold Hysteresis
Sense Output Low Voltage
1.16
20
1.23
100
1.35
200
0.4
V
mV
V
V
SI
≤
1.16V; V
S
≥
3V
R
SO
= 10K
to V
O
V
SO
= 5V; V
SI
≥
1.5V
V
SI
= 0
I
SH
I
SI
Sense Output Leakage
Sense Input Current
1
-3
μ
A
μ
A
-20
-8
PREREGULATOR
V
Z
I
Z
Preregulator Output Voltage
Preregulator Output Current
I
Z
= 10
μ
A
4.5
5
6
V
μ
A
10
Note 1: Foldback characteristic
L4949E
3/10
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