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LM140KG-5MD8 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças LM140KG-5MD8
Descrição Electrónicos  3-Terminal Positive Regulator
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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LM140KG-5MD8 Folha de dados(HTML) 1 Page - Texas Instruments

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LM140K
www.ti.com
SNVS994 – JULY 2013
LM140K 3-Terminal Positive Regulator
Check for Samples: LM140K
1
FEATURES
DESCRIPTION
The LM140K monolithic 3-terminal positive voltage
2
Complete Specifications at 1A Load
regulator employs internal current-limiting, thermal
Output Voltage Tolerances of ±4% at Tj = 25°C
shutdown and safe-area compensation, making them
Internal Thermal Overload Protection
essentially indestructible. If adequate heat sinking is
provided, they can deliver over 1.0A output current.
Internal Short-circuit Current Limit
They are intended as fixed voltage regulators in a
Output Transistor Safe Area Protection
wide range of applications including local (on-card)
P+ Product Enhancement Tested
regulation for elimination of noise and distribution
problems associated with single-point regulation. In
addition to use as fixed voltage regulators, these
devices can be used with external components to
obtain adjustable output voltages and currents.
Considerable effort was expended to make the entire
series of regulators easy to use and minimize the
number of external components. It is not necessary to
bypass the output, although this does improve
transient response. Input bypassing is needed only if
the regulator is located far from the filter capacitor of
the power supply.
The LM140K is available in 5V, 12V and 15V options
in the steel TO-3 power package.
Typical Applications
*Required if the regulator is located far from
VOUT = 5V + (5V/R1 + IQ) R2 5V/R1 > 3 IQ,
the power supply filter.
load regulation (Lr) ≈ [(R1 + R2)/R1] (Lr of
**Although no output capacitor is needed
LM140K-5.0).
for stability, it does help transient response.
(If needed, use 0.1
μF, ceramic disc).
Figure 2. Adjustable Output Regulator
Figure 1. Fixed Output Regulator
ΔIQ = 1.3 mA over line and load changes.
Figure 3. Current Regulator
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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