AN7805R PANASONIC [Panasonic Semiconductor], AN7805R Datasheet - Page 6

• Manufacturer Part Number: AN7805R
• Description: Positive Output Voltage Regulators with Reset pin 1A/500mA Type
• Manufacturer: PANASONIC [Panasonic Semiconductor]

(1) Soft Start Circuit
Characteristic Curve
Basic Regulator Circuit
Application Circuit
Input
16
14
12
10
C
8
6
4
2
0
I
0
Ambient Temperature Ta (˚C)
Input
0.33 F
1
(1)
(2)
(3)
(4)
AN7800R
AN78M00R
Control of Output Voltage Rise Time
40
0.1
10
1
2
P
D
80
1
AN7800R
AN78M00R
–Ta
(1)
(2)
(3)
(4)
3
4
Infinite Heat Sink
5˚C/W Heat Sink
15˚C/W Heat Sink
Without Heat Sink
2
1
Capacity C ( F)
120
* 7406etc.
Reset
3
4
160
10
1k
C
1000
100
800
600
400
200
C
0
Output
O
0.1
0.1 F
Output
V
I
V
=20V
Output Current I
I
=7V
V
1
I
=10V
V
*
O (Reset)
For TTL, an open collector type inverter, buffer, gate etc.
can be used.
Beware of the breakdown of TTL, as the reset pin bears voltage
higher than the output voltage V
C
C
10
I
O
is set when the input line is long.
improves the temperature response.
(2) Several Output Reset Circuits
– I
V
I
=30V
O
C
C
T
Input
Input
0.33 F
0.33 F
O
(mA)
100
I
O
j
=25˚C
=0.33 F
=0.1 F
1000
1
AN7800R
AN78M00R
1
AN7800R
AN78M00R
2
2
1.0
0.8
0.6
0.4
0.2
0
–40
O
3
3
4
4
by 1—2V.
Junction Temperature T
1k
0
Q
SW
R
I
I (Reset)
40
R
0.1 F
– T
80
j
0.1 F
Output
120
j
(˚C)
160