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 Products > Analog - Regulators > Linear Regulators - Low Dropout Voltage > Positive Voltage - Adjustable > LM2931

LM2931  Product Folder

Series Low Dropout Regulators
Generic P/N 2931
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Application
Notes

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 85 
Multiple Output Capability No 
On/Off Pin Yes 
Error Flag No 
InputMin Voltage (Volt) - 
InputMax Voltage (Volt) 26 
Output Current (mA) 100 
Dropout Voltage (Volt) .30 
Quiescent Current (mA) .40 
SecondaryOutput Voltage (Volt) - 
SecondaryOutput Current (Amp) - 
RegType LDO 
Output Min (Volt) 3 
Output Max (Volt) 24 
Watchdog No 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM2931 Series Low Dropout Regulators 357 Kbytes 5-Mar-02 View Online Download Receive via Email
LM2931 Series Low Dropout Regulators (JAPANESE)
 257 Kbytes   View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM2931IBP-3.3microSMD6StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.38reel
of
250		XV
I
4-8 weeks10000
LM2931IBP-5.0microSMD6StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.38reel
of
250		XV
I
4-8 weeks10000
LM2931AM-5.0SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.28rail
of
95		NSXYTT
2931A
M-5.0
11-13 weeks75000
LM2931CMSOIC NARROW8StatusFull productionN/AN/A 
Buy Now 		1K+$0.27rail
of
95		NSXYTT
LM29
31CM
3-6 weeks95000
LM2931M-5.0SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.27rail
of
95		NSXYTT
2931
M-5.0
11-13 weeks60000
LM2931AMX-5.0SOIC NARROW8StatusFull productionN/AN/A 
Buy Now		1K+$0.28reel
of
2500		NSXYTT
2931A
M-5.0
11-13 weeks150000
LM2931CMXSOIC NARROW8StatusFull productionN/AN/A 
Buy Now 		1K+$0.27reel
of
2500		NSXYTT
LM29
31CM
4-6 weeks100000
LM2931MX-5.0SOIC NARROW8StatusFull productionN/AN/A 
Buy Now 		1K+$0.27reel
of
2500		NSXYTT
2931
M-5.0
11-13 weeks150000
LM2931AT-5.0TO 2203StatusFull productionN/AN/A 
Buy Now 		1K+$0.35rail
of
45		NSUZXYTT
LM2931
AT5.0
11-13 weeks60000
LM2931T-5.0TO 2203StatusFull productionN/AN/A 
Buy Now 		1K+$0.37rail
of
45		NSUZXYTT
LM2931T
5.0
3-5 weeks60000
LM2931CTTO 2205StatusFull productionN/AN/A 
Buy Now 		1K+$0.40rail
of
45		NSUZXYTT
LM2931CT
3-6 weeks25000
LM2931AS-5.0TO 2633StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.58rail
of
45		NSUZXYTT
LM2931
AS5.0
13 weeks0
LM2931S-5.0TO 2633StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.53rail
of
45		NSUZXYTT
LM2931S
5.0
13 weeks0
LM2931ASX-5.0TO 2633StatusFull productionN/AN/A 
Buy Now		1K+$0.58reel
of
500		NSUZXYTT
LM2931
AS5.0
13 weeks0
LM2931SX-5.0TO 2633StatusFull productionN/AN/A 
Buy Now		1K+$0.53reel
of
500		NSUZXYTT
LM2931S
5.0
13 weeks0
LM2931CSTO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.53rail
of
45		NSUZXYTT
LM2931CS
13 weeks0
LM2931CSXTO 2635StatusFull productionN/AN/A 
Buy Now		1K+$0.53reel
of
500		NSUZXYTT
LM2931CS
13 weeks0
LM2931AZ-5.0TO 923StatusFull productionN/AN/A 
Buy Now 		1K+$0.45box
of
1800		NSXYTT
LM293
1AZ-5
12-14 weeks80000
LM2931Z-5.0TO 923StatusFull productionN/AN/A 
Buy Now 		1K+$0.33box
of
1800		NSXYTT
LM293
1Z-5
12-14 weeks100000
LM2931A-5 MDCUnpackaged DieFull production N/AN/ASamples  tray
of
N/A		-
N/A0
LM2931C MDCUnpackaged DieFull production N/AN/ASamples  tray
of
N/A		-
N/A0
LM2931A-5 MWCWaferFull production N/AN/A   wafer jar
of
N/A		-
N/A0
LM2931C MWCWaferFull production N/AN/A   wafer jar
of
N/A		-
N/A0

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 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 regulator features such as short circuit and thermal overload protection are also provided.

The LM2931 family includes a fixed 5V output (±3.8% tolerance for A grade) or an adjustable output with ON/OFF pin. 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 micro SMD packages
  • Available as adjustable with TTL compatible switch
  • See AN-1112 for micro SMD considerations

Application Notes

TitleSize in KbytesDate
View Online
Download
Receive via Email
AB-11: Application Brief 11 High-Efficiency Regulator has Low Drop-Out Voltage 40 Kbytes 3-Oct-02 View Online Download Receive via Email
Application Brief 11 High-Efficiency Regulator has Low Drop-Out Voltage (JAPANESE)
 51 Kbytes   View Online Download Receive via Email
AB-12: Application Brief 12 Wide Adjustable Range PNP Voltage Regulator 40 Kbytes 3-Oct-02 View Online Download Receive via Email
Application Brief 12 Wide Adjustable Range PNP Voltage Regulator (JAPANESE)
 31 Kbytes   View Online Download Receive via Email
AN-1148: Application Note 1148 Linear Regulators: Theory of Operation and Compensation 200 Kbytes 25-Sep-02 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]

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