MC7912CT Fairchild Semiconductor, MC7912CT Datasheet - Page 15

• Manufacturer Part Number: MC7912CT
• Description: IC REG -12V 1A 4% TO-220
• Manufacturer: Fairchild Semiconductor

Specifications of MC7912CT

• Regulator Topology: Negative Fixed
• Voltage - Output: -12V
• Voltage - Input: Down to -35V
• Voltage - Dropout (typical): 2V @ 1A
• Number Of Regulators: 1
• Current - Output: 1A
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Polarity: Negative
• 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: - 35 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Output Voltage Tolerance: +/- 4 %
• Voltage Regulation Accuracy: 4 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MC7912CTFS

Typical Applications
Notes:
(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.
I
is required if regulator is located an appreciable distance from power supply filter.
+ 15V
- 15V
Figure 6. Negative Fixed output regulator
Figure 7. Split power supply ( ± ± ± ± 12V/1A)
- V
C1
Input
C1
I
+
+
C
2.2 F
I
0.33 F
+
2
1
2.2 F
2
MC7812
MC7912
KA7812
KA7912
MC79XX
LM79XX
KA79XX
1
2
1
Co
Co
1 F
1 F
3
3
+
3
+
+ 1 F
C
Output
*
*
1N4001
1N4001
O
- V
+12V
GND
-12V
O
MC79XX/MC79XXA/LM79XX
15