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WT78LXXM

型号:

WT78LXXM

描述:

正电压稳压器[ Positive Voltage Regulator ]

品牌:

WEITRON[ WEITRON TECHNOLOGY ]

页数:

4 页

PDF大小:

579 K

WEITRON  
WT78LXXM  
Positive Voltage Regulator  
P b  
Lead(Pb)-Free  
1
Features:  
SOP-8  
* Maximum Output current IO: 0.1 A  
* Output voltage VO: 5V~8V  
* Continuous total dissipation: PD: 0.625 W (Ta = 25˚C )  
Typical Application  
Vin  
Vout  
WT78LXX  
Gnd  
Cin  
0.33µF  
Cout  
0.1µF  
Absolute Maximum Ratings  
Parameter  
Ratings  
Unit  
V
Input Voltage  
25  
Output Current  
mA  
100  
625  
Power Dissipation  
mW  
°C  
Operating Junction Temperature Range  
Storage temperature range  
-20 ~ +120  
-65 ~ +150  
°C  
WEITRON  
hpp://www.weitron.com.tw  
1/4  
05-Nov-2010  
WT78LXXM  
Electrical Characteristics at Specified Virtual Junction Temperature  
WT78L05 (Refer to the test circuits, Tj=0~125°C, I =40mA, V =10V, C =0.33µF, C =0.1µF unless otherwise specified)  
O
in  
in  
O
Parameter  
Symbol  
Min  
Typ  
Max  
Unit  
Output Voltage  
T =25°C  
V
O
4.8  
5.2  
V
5.0  
j
Load Regulation  
-
-
11  
5.0  
60  
30  
=25°C  
=1~100mA, T  
I
I
j
O
V  
mV  
O
=1~40mA, T =25°C  
O
j
Line Regulation  
7V<=V <=20V  
-
-
55  
45  
150  
100  
in  
V  
mV  
mA  
O
=25°C  
8V<=V <=20V,  
in  
j
Quiescent Current  
-
-
3.8  
-
6.0  
5.5  
=25°C  
=125°C  
T
T
j
j
I
Q
Quiescent Current Change  
8V<=V <=20V  
-
-
-
-
1.5  
0.1  
in  
I  
Q
mA  
1mA<=I <=40mA  
O
Output Noise Voltage  
V
-
40  
49  
-
-
µV  
dB  
n
T =25°C  
10Hz<=f<=100KHz,  
Ripple Rejection  
RR  
41  
=25°C  
j
8V<=V <=18V,  
in  
Dropout Voltage  
T =25°C  
V
-
1.7  
-
V
D
WT78L08 (Refer to the test circuits, Tj=0~125°C, I =40mA, V =14V, C =0.33µF, C =0.1µF unless otherwise specified)  
O
in  
in  
O
Parameter  
Symbol  
Min  
Typ  
Max  
Unit  
Output Voltage  
T =25°C  
j
8.0  
7.6  
8.4  
V
V
O
Load Regulation  
-
-
15  
8
80  
40  
=25°C  
=1~100mA, T  
I
I
j
O
V  
mV  
mV  
mA  
O
=1~40mA, T =25°C  
O
j
Line Regulation  
-
-
10  
8
175  
125  
10.5V<=V <=23V,  
=25°C  
=25°C  
in  
j
j
V  
O
11V<=V <=20V,  
in  
Quiescent Current  
-
-
3.8  
-
6.0  
5.5  
=25°C  
T
j
I
Q
=125°C  
T
j
Quiescent Current Change  
8V<=V <=20V  
I  
-
-
-
-
1.5  
0.1  
in  
Q
mA  
µV  
1mA<=I <=40mA  
O
Output Noise Voltage  
10Hz<=f<=100KHz,  
V
-
40  
49  
-
-
n
T =25°C  
Ripple Rejection  
RR  
41  
dB  
=25°C  
j
8V<=V <=18V,  
in  
Dropout Voltage  
T =25°C  
V
-
1.7  
-
V
D
WEITRON  
http://www.weitron.com.tw  
05-Nov-2010  
2/4  
WT78LXXM  
Typical Performance Characteristics  
8.0  
2.5  
2.0  
1.5  
1.0  
IO=70mA  
Io=1.0mA  
WT78L05  
VOUT=5.0V  
TJ=25  
6.0  
Io=1.0mA  
4.0  
Io=40mA  
Io=40mA  
Io=100mA  
2.0  
0
Dropout of Regulation is  
defined as when Vo=2% of Vo  
0.5  
0
25  
TJ,JUNCTION TEMPERATURE()  
50  
0
125  
75  
100  
4.0  
2.0  
6.0  
8.0  
10  
0
VI,INPUT VOLTAGE(V)  
Dropout Characteristics  
Dropout Voltage versus Junction Temperature  
2.5  
5.0  
4.0  
IO=70mA  
2.0  
1.5  
1.0  
WT78L05  
3.0  
V
OUT=5.0V  
Io=40mA  
IO=40mA  
TJ=25  
Io=1.0mA  
2.0  
1.0  
0
Dropout of Regulation is  
defined as when Vo=2% of Vo  
0.5  
0
25  
TJ,JUNCTION TEMPERATURE(℃)  
50  
25 30  
35 40  
0
125  
75  
100  
0 5.0 10  
20  
15  
VI,INPUT VOLTAGE(V)  
Input Bias Current versus Ambient Temperature  
Input Bias Current versus Input Voltage  
WEITRON  
http://www.weitron.com.tw  
05-Nov-2010  
3/4  
WT78LXXM  
SOP-8 PACKAGE OUTLINE DIMENSIONS(Unit:mm)  
SOP-8  
Dim  
A
B
C
D
Min  
Max  
6.20  
5.00  
4.00  
8º  
5.80  
4.80  
3.80  
0º  
0.40  
0.19  
0.10  
0.35  
1.35  
0.90  
0.25  
0.25  
0.49  
1.75  
E
F
M
H
L
C
B
J
K
J
0.375 REF  
D
K
G
45º  
1.27 TYP  
G
H
E
WEITRON  
http://www.weitron.com.tw  
05-Nov-2010  
4/4  
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