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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. : 004397255 Detail

LMV431A: 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...

LMV431A Data Sheet

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Part Number:: LMV431A
Supply Ability:: 5000

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1~5000

Unit Price
Negotiable

Processing time
15 Days

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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

Initial Accuracy (+/-) Max	1 %
Reference Voltage	1.2 V
Tempco, max (ppm/C)	138, 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
PowerWise	Undefined
View Using Catalog

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

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)
LMV431ACM5	LB300	0	32249	0	0	3406500	2	966603676
LMV431ACM5X	LB300	0	32249	0	0	3406500	2	966603676
LMV431ACZ	LB300	0	32249	0	0	3406500	2	966603676
LMV431AIM5	LB300	0	32249	0	0	3406500	2	966603676
LMV431AIM5X	LB300	0	32249	0	0	3406500	2	966603676
LMV431AIMF	LB300	0	32249	0	0	3406500	2	966603676
LMV431AIMFX	LB300	0	32249	0	0	3406500	2	966603676
LMV431AIZ	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.

Design Tools

Title	Size in Kbytes	Date
LMV431A Qualification Package	792 Kbytes	24-Jun-1999	View Online	Download

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

Application Notes

Title	Size in Kbytes	Date
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

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

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">

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

LMV431A

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