LM7912CT National Semiconductor, LM7912CT Datasheet - Page 4

• 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

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Typical Applications
Bypass capacitors are necessary for stable operation of the
LM79XX series of regulators over the input voltage and
output current ranges. Output bypass capacitors will improve
the transient response by the regulator.
The bypass capacitors, (2.2µF on the input, 1.0µF on the
output) should be ceramic or solid tantalum which have good
Load and line regulation
*Select resistors to set output voltage. 2 ppm/˚C tracking suggested
†
††
Determine Zener current
Solid tantalum
<
0.01% temperature stability
0.2%
High Stability 1 Amp Regulator
Current Source
4
high frequency characteristics. If aluminum electrolytics are
used, their values should be 10µF or larger. The bypass
capacitors should be mounted with the shortest leads, and if
possible, directly across the regulator terminals.
DS007340-7
DS007340-5