LMV431A Series

0.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Catalog

0.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Part	Supplier Device Package	Reference Type	Tolerance	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Package / Case	Mounting Type	Current - Output	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Current - Cathode [custom]
Texas Instruments LMV431IM5/NOPB	SOT-23-5	Shunt	1.5 %	85 °C	-40 °C	Adjustable	SC-74A SOT-753	Surface Mount	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431ACZ/NOPB	TO-92-3	Shunt	1 %	70 °C	0 °C	Adjustable	TO-226-3 TO-92-3	Through Hole	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431IM5X/NOPB	SOT-23-5	Shunt	1.5 %	85 °C	-40 °C	Adjustable	SC-74A SOT-753	Surface Mount	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431BIMFX/NOPB	SOT-23-3	Shunt		85 °C	-40 °C	Adjustable	SC-59 SOT-23-3 TO-236-3	Surface Mount	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431BCZ/NOPB	TO-92-3	Shunt		70 °C	0 °C	Adjustable	TO-226-3 TO-92-3	Through Hole	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431ACM5X/NOPB	SOT-23-5	Shunt	1 %	70 °C	0 °C	Adjustable	SC-74A SOT-753	Surface Mount	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431CM5/NOPB	SOT-23-5	Shunt	1.5 %	70 °C	0 °C	Adjustable	SC-74A SOT-753	Surface Mount	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431AIZ/NOPB	TO-92-3	Shunt	1 %	85 °C	-40 °C	Adjustable	TO-226-3 TO-92-3	Through Hole	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431BCM5	SOT-23-5	Shunt		70 °C	0 °C	Adjustable	SC-74A SOT-753	Surface Mount	15 mA	30 V	1.24 V	80 µA
Texas Instruments LMV431BIMF	SOT-23-3	Shunt		85 °C	-40 °C	Adjustable	SC-59 SOT-23-3 TO-236-3	Surface Mount	15 mA	30 V	1.24 V	80 µA

Catalog

0.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Key Features

• Low-Voltage Operation/Wide Adjust Range(1.24 V/30 V)0.5% Initial Tolerance (LMV431B)Temperature Compensated for IndustrialTemperature Range (39 PPM/°C forthe LMV431AI)Low Operation Current (55 µA)Low Output Impedance (0.25 Ω)Fast Turn-On ResponseLow CostLow-Voltage Operation/Wide Adjust Range(1.24 V/30 V)0.5% Initial Tolerance (LMV431B)Temperature Compensated for IndustrialTemperature Range (39 PPM/°C forthe LMV431AI)Low Operation Current (55 µA)Low Output Impedance (0.25 Ω)Fast Turn-On ResponseLow Cost

Description

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 non-inverting op amp configuration (Refer toSymbol 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. 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 non-inverting op amp configuration (Refer toSymbol 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.