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LM13121Z-5.0 データシート(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM13121Z-5.0
部品情報  3-Terminal Negative Regulators
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM13121Z-5.0 データシート(HTML) 1 Page - National Semiconductor (TI)

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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
O/V, and a maximum
load regulation of 0.01% V
O/mA.
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
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 ±5% overload,
line and temperature
n
Specified at an output current of 100mA
n
Easily compensated with a small 0.1µF output
capacitor
n
Internal short-circuit, thermal and safe operating area
protection
n
Easily adjustable to higher output voltages
n
Maximum line regulation less than 0.07% V
OUT/V
n
Maximum load regulation less than 0.01% V
OUT/mA
n
See AN-1112 for micro SMD considerations
Typical Applications
Fixed Output Regulator
00774801
*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.
Adjustable Output Regulator
00774803
−V0 = −5V − (5V/R1 + IQ) R2,
5V/R1 > 3IQ
Connection Diagrams
6-Bump micro SMD
00774820
Bump Side Down
TO-92 Plastic Package (Z)
00774802
Bottom View
February 2005
© 2005 National Semiconductor Corporation
DS007748
www.national.com


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