LM2931Z-5.0 National Semiconductor, LM2931Z-5.0 Datasheet

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LM2931Z-5.0

Manufacturer Part Number
LM2931Z-5.0
Description
IC, V REG LDO +5.0V, 2931, TO-92-3
Manufacturer
National Semiconductor
Datasheet

Specifications of LM2931Z-5.0

Primary Input Voltage
14V
Output Voltage
5V
Dropout Voltage Vdo
300mV
No. Of Pins
3
Output Current
100mA
Voltage Regulator Case Style
TO-92
Operating Temperature Range
-40°C To +85°C
Svhc
No
Output Voltage Fixed
5V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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© 2005 National Semiconductor Corporation
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 currents of 10mA) make the LM2931 the ideal
regulator for standby power systems. Applications include
memory standby circuits, CMOS and other low power pro-
cessor 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
protection are also provided.
The LM2931 family includes a fixed 5V output (
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
00525407
DS005254
00525406
±
3.8% toler-
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
n Very low quiescent current
n Output current in excess of 100 mA
n Input-output differential less than 0.6V
n Reverse battery protection
n 60V load dump protection
n −50V reverse transient protection
n Short circuit protection
n Internal thermal overload protection
n Mirror-image insertion protection
n Available in TO-220, TO-92, TO-263, SO-8 or 6-Bump
n Available as adjustable with TTL compatible switch
n See AN-1112 for micro SMD considerations
micro SMD packages
TO-263 Surface-Mount Package
TO-92 Plastic Package
Bottom View
Side View
Top View
00525412
00525408
00525411
www.national.com
June 2005

Related parts for LM2931Z-5.0

LM2931Z-5.0 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 © 2005 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

Connection Diagrams 6-Bump micro SMD Top View (Bump Side Down) ADJUSTABLE OUTPUT VOLTAGE TO-220 5-Lead Power Package Front View www.national.com (Continued) 00525438 00525409 8-Pin Surface Mount 00525410 Top View 2 micro SMD Laser Mark 00525439 TO-263 5-Lead Surface-Mount Package 00525413 ...

Page 3

... 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 LM2931M-5.0 2931M-5.0 2931AM-5.0 - LM2931CT LM2931CT LM2931CS LM2931CS LM2931CM LM2931CM - 3 Transport Media ...

Page 4

Typical Applications * Required if regulator is located far from power supply filter. * *C2 must be at least 100 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to ...

Page 5

... 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) LM2931 Electrical Characteristics for Fixed 3.3V Version V = 14V 10mA 25˚ Parameter Output Voltage 4V ≤ ...

Page 6

Electrical Characteristics for Fixed 5V Version V = 14V 10mA 25˚ 100 µF (unless otherwise specified) (Note Parameter Output Impedance 100mA 100Hz -10kHz ≤ 10mA, 6V ≤ V Quiescent Current ...

Page 7

Electrical Characteristics for Adjustable Version V = 14V 3V mA OUT O Parameter Long Term Stability Ripple Rejection f = 120 Hz O ≤ Dropout Voltage 100 ...

Page 8

Typical Performance Characteristics Dropout Voltage Low Voltage Behavior Line Transient Response www.national.com 00525416 Output at Voltage Extremes 00525418 Load Transient Response 00525420 8 Dropout Voltage 00525417 00525419 00525421 ...

Page 9

Typical Performance Characteristics Peak Output Current Quiescent Current Ripple Rejection (Continued) 00525422 00525424 00525426 9 Quiescent Current 00525423 Quiescent Current 00525425 Ripple Rejection 00525427 www.national.com ...

Page 10

Typical Performance Characteristics Output Impedance Reference Voltage Maximum Power Dissipation (TO-220) www.national.com (Continued) Operation During Load 00525428 Maximum Power Dissipation 00525430 Maximum Power Dissipation 00525432 10 Dump 00525429 (SO-8) 00525431 (TO-92) 00525433 ...

Page 11

Typical Performance Characteristics Maximum Power Dissipation (TO-263) (Note 4) Output Capacitor ESR (Continued) 00525434 00525436 11 On/Off Threshold 00525435 www.national.com ...

Page 12

Schematic Diagram www.national.com 12 00525401 ...

Page 13

Application Hints One of the distinguishing factors of the LM2931 series regu- lators is the requirement of an output capacitor for device stability. The value required varies greatly depending upon the application circuit and other factors. Thus some com- ments ...

Page 14

Physical Dimensions www.national.com 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 ...

Page 15

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 5-Lead TO-220 Power Package (T) NS Package Number T05A 3-Lead TO-263 Surface Mount Package NS Package Number TS3B 15 www.national.com ...

Page 16

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) 5-Lead TO-263 Surface Mount Package NS Package Number TS5B 16 ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 3-Lead TO-92 Plastic Package (Z) NS Package Number Z03A 17 www.national.com ...

Page 18

... 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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