The LMV431, LMV431A and LMV431B are precision 1.24 V shunt regulators capable of adjustment to 30 V. Negative feedback from the cathode to the adjust pin controls the cathode voltage, much like a noninverting op amp configuration (Refer to Symbol and Functional Diagrams). A two-resistor voltage divider terminated at the adjust pin controls the gain of a 1.24 V band-gap reference. Shorting the cathode to the adjust pin (voltage follower) provides a cathode voltage of a 1.24 V. The LMV431, LMV431A and LMV431B have respective initial tolerances of 1.5%, 1%, and 0.5%, and functionally lend themselves to several applications that require zener diode type performance at low voltages. Applications include a 3 V to 2.7 V low drop-out regulator, an error amplifier in a 3 V off-line switching regulator and even as a voltage detector. These parts are typically stable with capacitive loads greater than 10 nF and less than 50 pF. The LMV431, LMV431A and LMV431B provide performance at a competitive price.
Technical Specifications
Voltage Reference Type:
Shunt - Adjustable
Product Range:
LMV431 Series
Reference Voltage:
1.24V to 30V
Initial Accuracy:
1.5%
Temperature Coefficient:
-
Voltage Reference Case Style:
SOT-23
No. of Pins:
5Pins
Operating Temperature Min:
0°C
Operating Temperature Max:
70°C
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Accuracy %:
1.5%
Base Number:
431
Cathode Current Ik Max:
15mA
IC Temperature Range:
Commercial
Input Voltage Max:
30V
Input Voltage Min:
1.24V
Logic Function Number:
431
Operating Temperature Range:
0°C to +70°C
Operating Voltage Tolerance +:
1.5%
Output Current Max:
100mA
Output Voltage Max:
30V
Output Voltage Min:
1.24V
Reference Volt Tolerance ±%:
1.5%
Reference Voltage Tolerance:
18mV
Reference Volts:
1.24V
Temperature Coeff Over Temp Range:
4mV
Topology:
Shunt Adjustable
Voltage Regulator Type:
Positive Adjustable
Alternate Descriptions
V-Ref Adjustable 1.24V to 30V 15mA 5-Pin SOT-23 T/R Avnet America
V-Ref Adjustable 1.24V to 30V 15mA 5-Pin SOT-23 T/R Avnet Europe
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