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LMV431B

Features: Low Voltage Operation/Wide Adjust Range (1.24V/30V)0.5% Initial Tolerance (LMV431B)Temperature Compensated for Industrial TemperatureRange (39 PPM/˚C for the LMV431AI)Low Operation Current (55µA)Low Output Impedance (0.25Ω)Fast Turn-On ResponseLow CostApplicationShunt Re...

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SeekIC No. : 004397256 Detail

LMV431B: Features: Low Voltage Operation/Wide Adjust Range (1.24V/30V)0.5% Initial Tolerance (LMV431B)Temperature Compensated for Industrial TemperatureRange (39 PPM/˚C for the LMV431AI)Low Operation Cu...

LMV431B Data Sheet

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Part Number:
LMV431B
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Low Voltage Operation/Wide Adjust Range (1.24V/30V)
0.5% Initial Tolerance (LMV431B)
Temperature Compensated for Industrial Temperature
Range (39 PPM/˚C for the LMV431AI)
Low Operation Current (55µA)
Low Output Impedance (0.25Ω)
Fast Turn-On Response
Low Cost




Application

Shunt Regulator
Series Regulator
Current Source or Sink
Voltage Monitor
Error Amplifier
3V Off-Line Switching Regulator
Low Dropout N-Channel Series Regulator




Pinout

Connection Diagram




Specifications

Storage Temperature Range −65˚C to +150˚C
Operating Temperature Range
Industrial (LMV431AI, LMV431I) −40˚C to +85˚C
Commercial (LMV431AC, LMV431C, LMV431BC) 0˚C to +70˚C
Lead Temperature
TO92 Package/SOT23 -5,-3 Package
(Soldering, 10 sec.)265˚C
Internal Power Dissipation (Note 2)
TO92
0.78W
SOT23-5, -3 Package 0.28W
Cathode Voltage 35V
Continuous Cathode Current −30 mA to +30mA
Reference Input Current range−.05mA to 3mA

Initial Accuracy (+/-) Max 0.5 %
Reference Voltage Adjustable
Tempco, max (ppm/C) 129 ppm
Operating Current 0.055 mA
Output Current Undefined mA
Reference with respect to Anode (low side)
Temperature Min -40 deg C
Temperature Max 85 deg C
View Using Catalog





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)
LMV431BCM5 LB300 0 32249 0 0 3406500 2 966603676
LMV431BCM5X LB300 0 32249 0 0 3406500 2 966603676
LMV431BCZ LB300 0 32249 0 0 3406500 2 966603676
LMV431BIMF LB300 0 32249 0 0 3406500 2 966603676
LMV431BIMFX LB300 0 32249 0 0 3406500 2 966603676

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.


More 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 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
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 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
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 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
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 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1430: Application Note 1430 LM5071 Evaluation Board 738 Kbytes 4-Jan-06 Download
AN-1521: Application Note 1521 POEPHYTEREV-I / -E User Guide 14913 Kbytes 4-Apr-08 Download

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