Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
 |
| LMV431/LMV431A/LMV431B Low-Voltage (1.24V) Adjustable Precision Shunt Regulators |
943
Kbytes |
27-May-05 |
Download |
LMV431/LMV431A/LMV431B Low-Voltage (1.24V) Adjustable Precision Shunt Regulators (Japanese)
 |
865 Kbytes |
|
 |
Package Availability, Models, Samples & Pricing
| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LMV431ACZ
| NONE
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
LMV431BCZ
| NONE
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
LMV431IZ
| NONE
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
General Description
The LMV431, LMV431A and LMV431B are precision 1.24V shunt regulators capable of adjustment to 30V. Negative feedback from the cathode to the adjust pin controls the cathode voltage, much like a non-inverting op amp configuration (Refer to Symbol and Functional diagrams). A two resistor voltage divider terminated at the adjust pin controls the gain of a 1.24V band-gap reference. Shorting the cathode to the adjust pin (voltage follower) provides a cathode voltage of a 1.24V.
The LMV431, LMV431A and LMV431B have respective initial tolerances of 1.5%, 1% and 0.5%, and functionally lends themselves to several applications that require zener diode type performance at low voltages. Applications include a 3V to 2.7V low drop-out regulator, an error amplifier in a 3V off-line switching regulator and even as a voltage detector. These parts are typically stable with capacitive loads greater than 10nF and less than 50pF.
The LMV431, LMV431A and LMV431B provide performance at a competitive price.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LMV431CM5 | LB300 | 0 | 33664 | 0 | 0 | 3830500 | 1 | 1086914834
|
|
LMV431CM5X | LB300 | 0 | 33664 | 0 | 0 | 3830500 | 1 | 1086914834
|
|
LMV431CZ | LB300 | 0 | 33664 | 0 | 0 | 3830500 | 1 | 1086914834
|
|
LMV431IM5 | LB300 | 0 | 33664 | 0 | 0 | 3830500 | 1 | 1086914834
|
|
LMV431IM5X | LB300 | 0 | 33664 | 0 | 0 | 3830500 | 1 | 1086914834
|
|
LMV431IZ | LB300 | 0 | 33664 | 0 | 0 | 3830500 | 1 | 1086914834
|
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Design Tools
| Title | Size in Kbytes |
Date |
|
|
|
| LMV431 Qualification Package |
792 Kbytes |
24-Jun-1999 |
View Online |
Download |
|
Reference Designs
Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-1533: Application Note 1533 Over Voltage Protection Circuit for Automotive Load Dump |
244
Kbytes |
16-Mar-07 |
Download |
AN-1533 (Chinese): Application Note 1533 Over Voltage Protection Circuit for Automotive Load Dump
|
268 Kbytes |
|
 |
| AN-1408: Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865 |
1072
Kbytes |
10-Jan-06 |
Download |
AN-1408 (Chinese): Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865
|
697 Kbytes |
|
|
More Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-1521: Application Note 1521 POEPHYTEREV-I / -E User Guide |
14913
Kbytes |
4-Apr-08 |
Download |
| AN-1346: Application Note 1346 LM5070 'HE' Evaluation Board |
550
Kbytes |
13-Mar-06 |
Download |
AN-1346 (Chinese): Application Note 1346 LM5070 'HE' Evaluation Board
|
399 Kbytes |
|
|
| AN-1724: Application Note 1724 LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board |
167
Kbytes |
29-Oct-07 |
Download |
| AN-1455: Application Note 1455 LM5072 Evaluation Board |
708
Kbytes |
30-Mar-06 |
Download |
AN-1455 (Chinese): Application Note 1455 LM5072 Evaluation Board
|
600 Kbytes |
|
|
| AN-1430: Application Note 1430 LM5071 Evaluation Board |
738
Kbytes |
4-Jan-06 |
Download |
[Information as of 7-Nov-2009]
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