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LM2937IMP-10 Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części LM2937IMP-10
Szczegółowy opis  LM2937 500 mA Low Dropout Regulator
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM2937IMP-10 Arkusz danych(HTML) 1 Page - Texas Instruments

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LM2937
www.ti.com
SNVS100E – MARCH 2000 – REVISED APRIL 2013
LM2937 500 mA Low Dropout Regulator
Check for Samples: LM2937
1
FEATURES
DESCRIPTION
The LM2937 is a positive voltage regulator capable of
2
Fully Specified for Operation Over
−40°C to
supplying up to 500 mA of load current. The use of a
+125°C
PNP power transistor provides a low dropout voltage
Output Current in Excess of 500 mA
characteristic. With a load current of 500 mA the
Output Trimmed for 5% Tolerance Under all
minimum input to output voltage differential required
for the output to remain in regulation is typically 0.5V
Operating Conditions
(1V
ensured
maximum
over
the
full
operating
Typical Dropout Voltage of 0.5V at Full Rated
temperature
range).
Special
circuitry
has
been
Load Current
incorporated to minimize the quiescent current to
Wide Output Capacitor ESR Range, up to 3
Ω
typically only 10 mA with a full 500 mA load current
when the input to output voltage differential is greater
Internal Short Circuit and Thermal Overload
than 3V.
Protection
Reverse Battery Protection
The LM2937 requires an output bypass capacitor for
stability. As with most low dropout regulators, the
60V Input Transient Protection
ESR of this capacitor remains a critical design
Mirror Image Insertion Protection
parameter,
but
the
LM2937
includes
special
compensation
circuitry
that
relaxes
ESR
requirements. The LM2937 is stable for all ESR
below 3
Ω. This allows the use of low ESR chip
capacitors.
Ideally suited for automotive applications, the LM2937
will protect itself and any load circuitry from reverse
battery connections, two-battery jumps and up to
+60V/
−50V load dump transients. Familiar regulator
features such as short circuit and thermal shutdown
protection are also built in.
Connection Diagrams
Front View
Front View
Figure 1. TO-220 Plastic Package
Figure 2. SOT-223 Plastic Package
See Package Number NDE0003B
See Package Number DCY0004A
Top View
Side View
Figure 3. DDPAK/TO-263 Surface-Mount Package
Figure 4. DDPAK/TO-263 Surface-Mount Package
See Package Number KTT0003B
See Package Number KTT0003B
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 © 2000–2013, 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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