LM79L05ACMX ,Series 3-Terminal Negative RegulatorsLM320L/LM79LXXAC Series 3-Terminal Negative RegulatorsSeptember 2003LM320L/LM79LXXAC Series3-Termin ..
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LM79L05ACM-LM79L05ACMX-LM79L05ACTLX-LM79L05ACZ-LM79L12ACM-LM79L12ACMX-LM79L12ACZ-LM79L15ACM-LM79L15ACMX-LM79L15ACZ
Series 3-Terminal Negative Regulators
LM320L/LM79LXXAC Series
3-Terminal Negative Regulators
General DescriptionThe LM320L/LM79LXXAC dual marked seriesof 3-terminal
negative voltage regulators features fixed output voltagesof
−5V, −12V, and −15V with output current capabilitiesin
excessof 100mA. These devices were designed using the
latest computer techniquesfor optimizing the packagedIC
thermal/electrical performance. The LM79LXXAC series,
even when combined witha minimum output compensation
capacitorof 0.1µF, exhibitsan excellent transient response, maximum line regulationof 0.07% VO/V, anda maximum
load regulationof 0.01% VO/mA.
The LM320L/LM79LXXAC series also includes, as self-
protection circuitry: safe operating area circuitryfor output
transistor power dissipation limiting,a temperature indepen-
dent short circuit current limitfor peak output current limiting,
anda thermal shutdown circuitto prevent excessive junction
temperature. Although designed primarilyas fixed voltage
regulators, these devices maybe combined with simple
external circuitryfor boosted and/or adjustable voltages and
currents. The LM79LXXAC seriesis availableinthe 3-lead
TO-92 package, 8-lead SOIC package, and the 6-Bump
micro SMD package. The LM320L seriesis availablein the
3-lead TO-92 package.
For output voltage other than −5V, −12V and −15V, the
LM137L series providesan output voltage range from 1.2V 47V.
Features Preset output voltage erroris less than ±5% overload,
line and temperature Specifiedatan output currentof 100mA Easily compensated witha small 0.1µF output
capacitor Internal short-circuit, thermal and safe operating area
protection Easily adjustableto higher output voltages Maximum line regulation less than 0.07% VOUT/V Maximum load regulation less than 0.01% VOUT/mA See AN-1112for micro SMD considerations
Typical Applications
Fixed Output Regulator*Requiredifthe regulatoris locatedfar fromthe power supply filter.A1µF
aluminum electrolyticmaybe substituted.
**Requiredfor stability.A1µF aluminum electrolytic maybe substituted.
Adjustable Output Regulator−V0=−5V− (5V/R1+IQ)R2,
5V/R1> 3IQ
Connection Diagrams
6-Bump micro SMDBump Side Down
TO-92 Plastic Package(Z)
Bottom View
September 2003
LM320L/LM79LXXAC
Series
3-T
erminal
Negative
Regulators
