KA7812 Fairchild Semiconductor, KA7812 Datasheet - Page 22

• Manufacturer Part Number: KA7812
• Description: Linear Regulators - Standard 12V 1.0A 4%
• Manufacturer: Fairchild Semiconductor

Specifications of KA7812

• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: 12 V
• Output Current: 1 A
• Line Regulation: 240 mV
• Load Regulation: 240 mV
• Dropout Voltage (max): 2 V
• Input Voltage Max: 40 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Package / Case: TO-220
• Mounting Style: Through Hole
• Voltage Regulation Accuracy: 4 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

KA78XX/KA78XXA
Notes:
(1) To specify an output voltage. substitute voltage value for "XX." A common ground is required between the input and the Output
(2) C
(3) C
22
voltage. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple
voltage.
I
O
is required if regulator is located an appreciable distance from power Supply filter.
improves stability and transient response.
Input
Input
C
Figure 11. Adjustable Output Regulator (7 to 30V)
I
Figure 10. Circuit for Increasing Output Voltage
Input
C
I
Figure 9. Constant Current Regulator
C
I
V
V
O
O
= V
= V
XX
XX
I
RI
I
RI
(1+R
(1+R
5IQ
5 I
2
2
/R
Q
/R
C
1
1
O
)+I
)+I
C
O
Q
Q
R
R
2
2
Output
Output
Output
C
O