LM79L12ACZ National Semiconductor, LM79L12ACZ Datasheet

LM79L12ACZ

Manufacturer Part Number

LM79L12ACZ

Description

IC,VOLT REGULATOR,FIXED,-12V,BIPOLAR,SIP,3PIN,PLASTIC

Manufacturer

National Semiconductor

Datasheets

1.LM79L12ACZ.pdf (8 pages)

2.LM79L12ACZ.pdf (8 pages)

3.LM79L12ACZ.pdf (8 pages)

Specifications of LM79L12ACZ

Rohs Compliant

45AB

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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% V

load regulation of 0.01% V

The LM320L/LM79LXXAC series also includes, as self-

protection circuitry: safe operating area circuitry for output

transistor power dissipation limiting, a temperature indepen-

dent 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

Typical Applications

*Required if the regulator is located far from the power supply filter. A 1µF

aluminum electrolytic may be substituted.

**Required for stability. A 1µF aluminum electrolytic may be substituted.

Connection Diagrams

Fixed Output Regulator

6-Bump micro SMD

Bump Side Down

/mA.

00774820

DS007748

/V, and a maximum

00774801

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

n Preset output voltage error is less than

n Specified at an output current of 100mA

n Easily compensated with a small 0.1µF output

n Internal short-circuit, thermal and safe operating area

n Easily adjustable to higher output voltages

n Maximum line regulation less than 0.07% V

n Maximum load regulation less than 0.01% V

n See AN-1112 for micro SMD considerations

−V

5V/R1

line and temperature

protection

capacitor

= −5V − (5V/R1 + I

3 I

Adjustable Output Regulator

TO-92 Plastic Package (Z)

) • R2,

Bottom View

00774802

5% overload,

www.national.com

OUT

March 2006

/mA

00774803

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