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LM2937ES-15 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças LM2937ES-15
Descrição Electrónicos  500-mA Low Dropout Regulator
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
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LM2937
SNVS100F – MARCH 2000 – REVISED JULY 2014
LM2937 500-mA Low Dropout Regulator
1 Features
3 Description
The LM2937 is a positive voltage regulator capable of
1
Fully Specified for Operation Over
−40°C to 125°C
supplying up to 500 mA of load current. The use of a
Output Current in Excess of 500 mA
PNP power transistor provides a low dropout voltage
Output Trimmed for 5% Tolerance Under all
characteristic. With a load current of 500 mA the
Operating Conditions
minimum input to output voltage differential required
for the output to remain in regulation is typically 0.5 V
Typical Dropout Voltage of 0.5 V at Full Rated
(1-V ensured maximum over the full operating
Load Current
temperature
range).
Special
circuitry
has
been
Wide Output Capacitor ESR Range, up to 3
Ω
incorporated to minimize the quiescent current to
Internal Short Circuit and Thermal Overload
typically only 10 mA with a full 500-mA load current
Protection
when the input to output voltage differential is greater
than 3 V.
Reverse Battery Protection
The LM2937 requires an output bypass capacitor for
60-V Input Transient Protection
stability. As with most low dropout regulators, the
Mirror Image Insertion Protection
ESR of this capacitor remains a critical design
parameter,
but
the
LM2937
includes
special
2 Applications
compensation
circuitry
that
relaxes
ESR
Automotive
requirements. The device is stable for all ESR below
3
Ω. This allows the use of low ESR chip capacitors.
Industrial Control
Ideally suited for automotive applications, the LM2937
Point-of-Load regulation
will protect itself and any load circuitry from reverse
space
battery connections, two-battery jumps, and up to 60-
space
V/
−50-V load dump transients. Familiar regulator
space
features such as short circuit and thermal shutdown
protection are also built in.
Simplified Schematic
Device Information(1)
PART
PACKAGE
BODY SIZE (NOM)
NUMBER
TO-220 (3)
14.986 mm x 10.66 mm
LM2937
SOT (4)
6.50 mm x 3.5 mm
TO-263 (3)
10.18 mm x 8.41 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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