KA7918 Fairchild Semiconductor, KA7918 Datasheet - Page 15

• Manufacturer Part Number: KA7918
• Description: Linear Regulators - Standard
• Manufacturer: Fairchild Semiconductor

Specifications of KA7918

• Polarity: Negative
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: - 18 V
• Output Current: 2.2 A
• Line Regulation: 360 mV
• Load Regulation: 360 mV
• Input Voltage Max: - 35 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

Typical Applications
Note:
(1) To specify an output voltage, substitute voltage value for "XX "
(2) Required for stability. For value given, capacitor must be solid tantalum. If aluminium electronics are used, at least ten times
(3) To improve transient response. If large capacitors are used, a high current diode from input to output (1N400l or similar)
value shown should be selected. C
should be introduced to protect the device from momentary input short circuit.
+15V
-15V
C1
Input
C1
I
is required if regulator is located an appreciable distance from power supply filter.
+
+
Figure 6. Negative Fixed output regulator
Figure 7. Split power supply ( ± ± ± ± 12V/1A)
C
2.2uF
I
0.33uF
+
2.2uF
2
1
2
KA7912
KA7812
KA79XX
2
1
1
3
3
3
Co
Co +
1uF
1uF
+
1uF
+
Co
Output
*
*
1N4001
1N4001
-12V
+12V
GND
KA79XX/KA79XXA
15