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LM140LAH-15 データシート(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部品番号 LM140LAH-15
部品情報  3-Terminal Positive 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)

LM140LAH-15 データシート(HTML) 1 Page - National Semiconductor (TI)

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TLH7782
February 1995
LM140LLM340L Series 3-Terminal Positive Regulators
General Description
The LM140L series of three terminal positive regulators is
available with several fixed output voltages making them
useful in a wide range of applications The LM140LA is an
improved version of the LM78LXX series with a tighter out-
put voltage tolerance (specified over the full military temper-
ature range) higher ripple rejection better regulation and
lower quiescent current The LM140LA regulators have
g
2% VOUT specification 004%V line regulation and
001%mA load regulation When used as a zener diodere-
sistor combination replacement the LM140LA usually re-
sults in an effective output impedance improvement of two
orders of magnitude and lower quiescent current These
regulators can provide local on card regulation eliminating
the distribution problems associated with single point regu-
lation The voltages available allow the LM140LA to be used
in logic systems instrumentation Hi-Fi and other solid state
electronic equipment Although designed primarily as fixed
voltage regulators these devices can be used with external
components to obtain adjustable voltages and currents
The LM140LALM340LA are available in the low profile
metal three lead TO-39 (H) and the LM340LA are also avail-
able in the plastic TO-92 (Z) With adequate heat sinking the
regulator can deliver 100 mA output current Current limiting
is included to limit the peak output current to a safe value
Safe area protection for the output transistor is provided to
limit internal power dissipation If internal power dissipation
becomes too high for the heat sinking provided the thermal
shut-down circuit takes over preventing the IC from over-
heating
For applications requiring other voltages see LM117L Data
Sheet
Features
Y
Line regulation of 004%V
Y
Load regulation of 001%mA
Y
Output voltage tolerances of g2% at Tj e 25 C and
g
4% over the temperature range (LM140LA)
g
3% over the temperature range (LM340LA)
Y
Output current of 100 mA
Y
Internal thermal overload protection
Y
Output transistor safe area protection
Y
Internal short circuit current limit
Y
Available
in
metal
TO-39
low
profile
package
(LM140LALM340LA) and plastic TO-92 (LM340LA)
Output Voltage Options
LM140LA-50
5V
LM340LA-50
5V
LM140LA-12
12V
LM340LA-12
12V
LM140LA-15
15V
LM340LA-15
15V
Connection Diagrams
TO-39 Metal Can Package (H)
TLH7782 – 2
Bottom View
Order Number LM140LAH-50 LM140LAH-50883 LM140LAH-12
LM140LAH-12883 LM140LAH-15 LM140LAH-15883 LM340LAH-50 LM340LAH-12 or LM340LAH-15
See NS Package Number H03A
TO-92 Plastic Package (Z)
TLH7782 – 3
Bottom View
Order Number LM340LAZ-50 LM340LAZ-12 or LM340LAZ-15
See NS Package Number Z03A
C1995 National Semiconductor Corporation
RRD-B30M115Printed in U S A


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