ka278ra05 Fairchild Semiconductor, ka278ra05 Datasheet - Page 5

• Manufacturer Part Number: ka278ra05
• Description: Low Dropout Voltage Regulator Fixed & Adjustable
• Manufacturer: Fairchild Semiconductor

Typical Application
• Ci is required if regulator is located an appreciable distance from power supply filter.
• Co improves stability and transient response.(C
Input
Input
Input
Input
Input
Figure 8. Internal Resistor(R1,R2) Variation vs. Temperature(Tj)
Vo = 1.25 ( 1 +
Vo = 1.25 ( 1 +
Vo = 1.25 ( 1 +
Ci
Ci
Figure 7. Application Circuit (Adjustable Mode)
Ci
Ci
Ci
Figure 9. Application Circuit (Fixed Mode)
-10
-10
-5
-5
20
20
15
15
10
10
25
25
5
5
0
0
1
1
-50
-50
1
1
1
Vin
Vin
KA278RA05
KA278RA05
Vin
Vin
Vin
KA278RA05
KA278RA05
KA278RA05
O
R
R
R
R
R
R
-25
-25
-25
> 47 F)
Junction temperature Tj()
Junction temperature Tj()
1
1
1
2
2
2
GND
GND
GND
GND
GND
//R
//R
//R
//R
//R
//R
3
3
3
3
3
0
0
0
3
3
3
4
4
4
Vadj
Vadj
Vadj
Vadj
Vadj
) R
) R
) R
Vo
Vo
25
25
25
Vo
Vo
Vo
4
4
4
4
4
2
2
2
2
2
1
1
1
50
50
50
= 1.8k
= 1.8k
= 1.8k
75
75
75
R3
R3
R3
R4
R4
R4
100
100
100
, R
, R
, R
125
125
125
Co
Co
2
2
2
= 0.6k
= 0.6k
= 0.6k
Co
Co
Co
R
R
L
L
R
R
R
Output = 5V
Output = 5V
L
L
L
Output
Output
Output
KA278RA05
5