LM2937ET-5.0/NOPB National Semiconductor, LM2937ET-5.0/NOPB Datasheet

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LM2937ET-5.0/NOPB

Manufacturer Part Number
LM2937ET-5.0/NOPB
Description
IC REGULATOR LDO TO220-3
Manufacturer
National Semiconductor
Type
Voltage Regulatorr

Specifications of LM2937ET-5.0/NOPB

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 26V
Voltage - Dropout (typical)
0.11V @ 50mA
Number Of Regulators
1
Current - Output
500mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Current, Output
500 mA
Current, Supply
10 mA
Package Type
TO-220
Regulation, Line
15 mV
Regulation, Load
5 mV
Regulator Type
Low Dropout
Resistance, Thermal, Junction To Case
3 °C/W
Temperature, Operating, Range
-40 to +125 °C
Voltage, Dropout
0.5 V
Voltage, Input
26 V
Voltage, Noise
150 μV
Voltage, Output
5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LM2937ET-5.0
*LM2937ET-5.0/NOPB
LM2937ET-5.0

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© 2005 National Semiconductor Corporation
LM2937
500 mA Low Dropout Regulator
General Description
The LM2937 is a positive voltage regulator capable of sup-
plying up to 500 mA of load current. The use of a PNP power
transistor provides a low dropout voltage characteristic. With
a load current of 500 mA the minimum input to output voltage
differential required for the output to remain in regulation is
typically 0.5V (1V guaranteed maximum over the full oper-
ating temperature range). Special circuitry has been incor-
porated to minimize the quiescent current to typically only
10 mA with a full 500 mA load current when the input to
output voltage differential is greater than 3V.
The LM2937 requires an output bypass capacitor for stabil-
ity. As with most low dropout regulators, the ESR of this
capacitor remains a critical design parameter, but the
LM2937 includes special compensation circuitry that relaxes
ESR requirements. The LM2937 is stable for all ESR below
3Ω. 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
Connection Diagrams
TO-263 Surface-Mount Package
TO-220 Plastic Package
Front View
Top View
DS011280
01128002
01128005
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.
Features
n Fully specified for operation over −40˚C to +125˚C
n Output current in excess of 500 mA
n Output trimmed for 5% tolerance under all operating
n Typical dropout voltage of 0.5V at full rated load current
n Wide output capacitor ESR range, up to 3Ω
n Internal short circuit and thermal overload protection
n Reverse battery protection
n 60V input transient protection
n Mirror image insertion protection
conditions
SOT-223 Plastic Package
Front View
Side View
01128006
01128026

Related parts for LM2937ET-5.0/NOPB

LM2937ET-5.0/NOPB Summary of contents

Page 1

... Connection Diagrams TO-220 Plastic Package Front View TO-263 Surface-Mount Package Top View © 2005 National Semiconductor Corporation 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. Features n Fully specified for operation over − ...

Page 2

... LM2937IMP-15 LM2937IMPX-15 Part Number Packaging Marking LM2937ES-5.0 LM2937ES-8.0 LM2937ES-10 LM2937ES-10 LM2937ES-12 LM2937ES-12 LM2937ES-15 LM2937ES-15 LM2937ET-5.0 LM2937ET-8.0 LM2937ET-10 LM2937ET-10 LM2937ET-12 LM2937ET-12 LM2937ET-15 LM2937ET-15 L71B L72B L73B L74B L75B 2 Transport Media NSC Drawing Rail TS3B 500 Units Tape and Reel Rail 500 Units Tape and Reel ...

Page 3

... R r Input Voltage (Note 1) TO-263 (10 seconds) SOT-223 (Vapor Phase, 60 seconds) SOT-223 (Infared, 15 seconds) ESD Susceptibility (Note 3) 26V Operating Conditions 60V Temperature Range (Note 2) Internally Limited LM2937ET, 150˚C LM2937IMP −65˚C to +150˚C Maximum Input Voltage 260˚ 25˚ Typ Limit ≤ ...

Page 4

... Physical Dimensions inches (millimeters) unless otherwise noted TO-263 3-Lead Plastic Surface Mount Package Order Number LM2937ES-5.0, LM2937ES-8.0, LM2937ES-10, LM2937ES-12 or LM2937ES-15 Plastic Package Order Number LM2937ET-5.0, LM2937ET-8.0, LM2937ET-10, LM2937ET-12, or LM2937ET-15 NS Package Number T03B NS Package Number TS3B 12 ...

Page 5

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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