WEITRON
http://www.weitron.com.tw
4/7
05-Nov-2010
WT78L12
(Refer to the test circuits, Tj=0~125°C, I
O
=40mA, V
in
=19V, C
in
=0.33µF, C
O
=0.1µF unless otherwise specified)
Parameter Symbol Min Typ Max Unit
V
Output Voltage
T
j
=25°C
Line Regulation
O
=1~100mA, T
j
=25°C
O
=1~40mA, T
j
=25°C
WT78L15
(Refer to the test circuits, Tj=0~125°C, I
O
=40mA, V
in
=23V, C
in
=0.33µF, C
O
=0.1µF unless otherwise specified)
15
14.4
14.25
15.6
15.75
25
15
-
-
150
75
mV
Load Regulation
j
=25°C
Quiescent Current
j
=25°C
65
58
-
-
300
250
mV
V
O
4.6- 6.5 mA
I
Q
Quiescent Current Change
-
-
-
-
1.5
0.1
mA
Q
Output Noise Voltage
82- - µV
V
n
Dropout Voltage
1.7- - V
V
D
Ripple Rejection
j
=0-125°C
39 - dBRR
17.5V<=V <=30V,
in
I
O
=1mA~40mA,T
j
=0-125°C
I
O
=1mA~70mA, T
j
=0~125°C
14.25
15
15
15.75
I
I
∆V
O
17.5V<=V <=30V,
in
19V<=V <=30V,
in
∆V
O
T
∆I
19V<=V <=30V,
in
T
j
=0-125°C
1mA<=I
O
<=40mA,T
j
=0-125°C
10Hz<=f<=100KHz,
T =25°C
18.5V<=V <=28.5V,
in
T =25°C
j
=25°C
Parameter Symbol Min Typ Max Unit
V
Output Voltage
T
j
=25°C
Line Regulation
O
=1~100mA, T
j
=25°C
O
=1~40mA, T
j
=25°C
12
11.5
11.4
12.5
12.6
22
13
-
-
100
50
mV
Load Regulation
j
=25°C
Quiescent Current
j
=25°C
55
49
-
-
250
200
mV
V
O
4.3- 6.5 mA
I
Q
Quiescent Current Change
-
-
-
-
1.5
0.1
mA
Q
Output Noise Voltage
70- - µV
V
n
Dropout Voltage
1.7- - V
V
D
Ripple Rejection
j
=0-125°C
42 - dBRR
14V<=V <=27V,
in
I
O
=1mA~40mA,T
j
=0-125°C
I
O
=1mA~70mA, T
j
=0~125°C
11.4
12
12
12.6
I
I
∆V
O
14.5V<=V <=27V,
in
16V<=V <=27V,
in
∆V
O
T
∆I
16V<=V <=27V,
in
T
j
=0-125°C
1mA<=I
O
<=40mA,T
j
=0-125°C
10Hz<=f<=100KHz,
T =25°C
15V<=V <=25V,
in
T =25°C
j
=25°C
37
V =23V,
in
V =23V,
in
V =23V,
in
O
=40mA,
I
O
=40mA,
I
O
=40mA,
I
34
WT78LXXG