KA278RA05C Fairchild Semiconductor, KA278RA05C Datasheet - Page 12

• Manufacturer Part Number: KA278RA05C
• Description: The KA278RXXC is a low-dropout voltage regulator suitable for various electronic equipments
• Manufacturer: Fairchild Semiconductor

KA278RXXC-SERIES
Typical Application
KA278R33/05/12C
• Ci is required if regulator is located at an appreciable distance from power supply filter.
• Co improves stability and transient response.(Co > 47μF)
KA278RA05
• Ci is required if regulator is located at an appreciable distance from power supply filter.
• Co improves stability and transient response.(C
12
Input
Input
Figure 3. Internal Resistor(R1,R2) Variation vs. Temperature(Tj)
Input
Input
Input
Figure 2. Application Circuit (Adjustable Mode)
Vo = 1.25 ( 1 +
Vo = 1.25 ( 1 +
Vo = 1.25 ( 1 +
Ci
Ci
Vin
Ci
Ci
Ci
-10
-10
-5
-5
25
25
20
20
15
15
10
10
0
0
5
5
1
-50
-50
Figure 4. Application Circuit (Fixed Mode)
Figure 1. Application Circuit
1
1
1
1
1
O
Vin
Vin
KA278RA05
KA278RA05
-25
-25
-25
Vin
Vin
Vin
KA278RA05
KA278RA05
KA278RA05
Junction temperature Tj(℃)
Junction temperature Tj(℃)
> 47μF)
R
R
R
R
R
R
Vdis
1
1
1
2
2
2
GND
GND
GND
GND
GND
//R
//R
//R
0
0
0
//R
//R
//R
3
3
3
3
3
4
3
3
3
4
4
4
Vadj
Vadj
Vadj
Vadj
Vadj
25
25
25
) R
) R
) R
Vo
Vo
Vo
Vo
Vo
2
2
2
4
4
4
4
4
2
2
1
1
1
= 1.8kΩ , R
= 1.8kΩ , R
= 1.8kΩ , R
50
50
50
75
75
75
R3
R3
R3
R4
R4
R4
2
3
100
100
100
GND
Co
Co
Disable Signal
2
2
2
Vo
= 0.6kΩ
= 0.6kΩ
= 0.6kΩ
Co
Co
Co
125
125
125
R
R
L
L
R
R
R
Output = 5V
Output = 5V
L
L
L
Output
Output
Output