LM7912CT National Semiconductor, LM7912CT Datasheet - Page 5

• Manufacturer Part Number: LM7912CT
• Description: IC NEGATIVE VOLT REGULATOR -12V TO-220-3
• Manufacturer: National Semiconductor

Specifications of LM7912CT

• Primary Input Voltage: -27V
• Output Voltage Fixed: -12V
• Dropout Voltage Vdo: 1.1V
• No. Of Outputs: 1
• No. Of Pins: 3
• Output Current: 1.5A
• Operating Temperature Range: 0°C To +125°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Typical Applications
*Improves transient response and ripple rejection. Do not increase beyond 50 µF.
Select R2 as follows:
*
†
*
†
Lamp brightness increase until i
Necessary only if raw supply filter capacitor is more that 2" from LM7905CT
Lamp brightness increases until i
Necessary only if raw supply filter capacitor is more that 2" from LM7905
LM7905CT
LM7912CT
LM7915CT
300
750
1k
I
= i
i
= 5V/R1 (I
Q
( 1 mA) + 5V/R1.
(Continued)
i
can be set as low as 1 µA)
Light Controller Using Silicon Photo Cell
High-Sensitivity Light Controller
Variable Output
5
DS007340-2
DS007340-9
DS007340-8
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