LM2931AT-5.0/NOPB National Semiconductor, LM2931AT-5.0/NOPB Datasheet

LM2931AT-5.0/NOPB

Manufacturer Part Number

LM2931AT-5.0/NOPB

Description

IC REGULATOR LDO 5V TO220-3

Manufacturer

National Semiconductor

Type

Linearr

Datasheets

1.LM2931AMX-5.0NOPB.pdf (18 pages)

2.LM2931AT-5.0NOPB.pdf (6 pages)

Specifications of LM2931AT-5.0/NOPB

Regulator Topology

Positive Fixed

Voltage - Output

Voltage - Input

Up to 26V

Voltage - Dropout (typical)

0.3V @ 100mA

Number Of Regulators

Current - Output

100mA

Operating Temperature

-40°C ~ 85°C

Mounting Type

Through Hole

Package / Case

TO-220-3 (Straight Leads)

Package

3TO-220

Function

LDO

Number Of Outputs

Output Voltage

5 V

Maximum Output Current

0.1(Typ) A

Output Type

Fixed

Accuracy

Â±3.8 %

Typical Dropout Voltage @ Current

0.05@10mA|0.3@100mA V

Polarity

Positive

Current, Output

100 mA

Current, Supply

15 mA

Package Type

TO-220

Regulation, Line

4 mV

Regulation, Load

14 mV

Regulator Type

Low Dropout

Resistance, Thermal, Junction To Case

3 °C/W

Temperature, Operating, Range

-40 to +85 °C

Voltage, Dropout

0.3 V

Voltage, Input

33 V

Voltage, Noise

500 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

*LM2931AT-5.0
*LM2931AT-5.0/NOPB
LM2931AT-5.0NS

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LM2931

Series Low Dropout Regulators

General Description

The LM2931 positive voltage regulator features a very low

quiescent current of 1mA or less when supplying 10mA loads.

This unique characteristic and the extremely low input-output

differential required for proper regulation (0.2V for output cur-

rents of 10mA) make the LM2931 the ideal regulator for

standby power systems. Applications include memory stand-

by circuits, CMOS and other low power processor power

supplies as well as systems demanding as much as 100mA

of output current.

Designed originally for automotive applications, the LM2931

and all regulated circuitry are protected from reverse battery

installations or 2 battery jumps. During line transients, such

as a load dump (60V) when the input voltage to the regulator

can momentarily exceed the specified maximum operating

voltage, the regulator will automatically shut down to protect

both internal circuits and the load. The LM2931 cannot be

harmed by temporary mirror-image insertion. Familiar regu-

lator features such as short circuit and thermal overload pro-

tection are also provided.

The LM2931 family includes a fixed 5V output (±3.8% toler-

ance for A grade) or an adjustable output with ON/OFF pin.

Connection Diagrams

FIXED VOLTAGE OUTPUT

*NC = Not internally connected. Must be electrically isolated from the rest of

the circuit for the micro SMD package.

TO-220 3-Lead Power Package

8-Pin Surface Mount

Front View

Top View

525407

5254

525406

Both versions are available in a TO-220 power package,

TO-263 surface mount package, and an 8-lead surface mount

package. The fixed output version is also available in the

TO-92 plastic and 6-Bump micro SMD packages.

Features

■

Very low quiescent current

Output current in excess of 100 mA

Input-output differential less than 0.6V

Reverse battery protection

60V load dump protection

−50V reverse transient protection

Short circuit protection

Internal thermal overload protection

Mirror-image insertion protection

Available in TO-220, TO-92, TO-263, SO-8 or 6-Bump mi-

cro SMD packages

Available as adjustable with TTL compatible switch

See AN-1112 for micro SMD considerations

TO-263 Surface-Mount Package

TO-92 Plastic Package

Bottom View

Side View

Top View

525412

525408

525411

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LM2931AT-5.0/NOPB Summary of contents

Page 1

... Not internally connected. Must be electrically isolated from the rest of the circuit for the micro SMD package. Top View © 2006 National Semiconductor Corporation Both versions are available in a TO-220 power package, TO-263 surface mount package, and an 8-lead surface mount package. The fixed output version is also available in the TO-92 plastic and 6-Bump micro SMD packages ...

Page 2

SMD Top View (Bump Side Down) ADJUSTABLE OUTPUT VOLTAGE TO-220 5-Lead Power Package Front View micro SMD Laser Mark 525438 5-Lead Surface-Mount Package 525409 8-Pin Surface Mount 525410 Top View 2 525439 TO-263 525413 Top View 525414 Side ...

Page 3

... TO-263 8-Pin SOIC 3.3V * 6-Bump LM2931IBPX-3.3 micro SMD Note: The micro SMD package marking is a single digit manufacturing Date Code Only. Part Number Package Marking LM2931T-5.0 LM2931T-5.0 LM2931AT-5.0 LM2931S-5.0 LM2931S-5.0 LM2931AS-5.0 LM2931Z-5.0 LM2931Z-5 LM2931AZ 2931M-5.0 2931AM-5.0 ‐ LM2931CT LM2931CT LM2931CS LM2931CS ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage Operating Range Overvoltage Protection LM2931A, LM2931C (Adjustable) Electrical Characteristics for Fixed 3.3V Version V = 14V 10mA 25° Parameter Output Voltage 4V ≤ ...

Page 5

Electrical Characteristics for Fixed 5V Version = 25° 100 μF (unless otherwise specified) (Note 14V 10mA Parameter Output Voltage 6.0V ≤ V −40°C ≤ ≤ V Line ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead Surface Mount Package (M) NS Package Number M08A 3-Lead TO-220 Plastic Package (T) NS Package Number T03B 14 ...

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