LM79L05ACZ Power Mosfet Transistor 3-Terminal Negative Regulators
multi emitter transistor
,silicon power transistors
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LM320L/LM79LXXAC Series
3-Terminal Negative Regulators
General Description
The LM320L/LM79LXXAC dual marked series of 3-terminal negative voltage regulators features fixed output voltages of −5V, −12V, and −15V with output current capabilities in excess of 100mA. These devices were designed using the latest computer techniques for optimizing the packaged IC thermal/electrical performance.
The LM79LXXAC series, even when combined with a minimum output compensation capacitor of 0.1µF, exhibits an excellent transient response, a maximum line regulation of 0.07% VO/V, and a maximum load regulation of 0.01% VO/mA.
The LM320L/LM79LXXAC series also includes, as selfprotection circuitry: safe operating area circuitry for output transistor power dissipation limiting, a temperature independent short circuit current limit for peak output current limiting, and a thermal shutdown circuit to prevent excessive junction temperature.
Although designed primarily as fixed voltage regulators, these devices may be combined with simple external circuitry for boosted and/or adjustable voltages and currents. The LM79LXXAC series is available in the 3-lead TO-92 package, 8-lead SOIC package, and the 6-Bump micro SMD package. The LM320L series is available in the 3-lead TO-92 package.
For output voltage other than −5V, −12V and −15V, the LM137L series provides an output voltage range from 1.2V to 47V.
Features
- Preset output voltage error is less than ±5% overload, line and temperature
- Specified at an output current of 100mA
- Easily compensated with a small 0.1µF output capacitor
- Internal short-circuit, thermal and safe operating area protection
- Easily adjustable to higher output voltages
- Maximum line regulation less than 0.07% VOUT/V
- Maximum load regulation less than 0.01% VOUT/mA
- See AN-1112 for micro SMD considerations
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Input Voltage VO = −5V, −12V, −15V −35V
Internal Power Dissipation (Note 2) Internally Limited
Operating Temperature Range 0˚C to +70˚C
Maximum Junction Temperature +125˚C
Storage Temperature Range −55˚C to +150˚C
Lead Temperature (Soldering, 10 sec.) 260˚C
Connection Diagrams
Physical Dimensions inches (millimeters) unless otherwise noted
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