LMV431B

AKTIV

Einstellbarer Präzisions-Shunt-Regler, 0,5 % Genauigkeit, niedrige Spannung (1,24 V)

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Datenblatt

document-pdfAcrobat LMV431l;LMV431Al;LMV431B Low-Voltage (1.24V) Adj Precision Shunt Regs datasheet (Rev. G) (Englisch)

LMV431B

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

VO (V)

1.24

Initial accuracy (max) (%)

0.5

Iz for regulation (min) (µA)

80

VO adj (min) (V)

1.24

VO adj (max) (V)

30

Reference voltage (V)

adjustable

Temp coeff (max) (ppm/°C)

129, 138

Operating temperature range (°C)

-40 to 85

Iout/Iz (max) (mA)

15

Rating

Catalog

VO (V)

1.24

Initial accuracy (max) (%)

0.5

Iz for regulation (min) (µA)

80

VO adj (min) (V)

1.24

VO adj (max) (V)

30

Reference voltage (V)

adjustable

Temp coeff (max) (ppm/°C)

129, 138

Operating temperature range (°C)

-40 to 85

Iout/Iz (max) (mA)

15

SOT-23 (DBV)

5

8.12 mm² (2.9 mm × 2.8 mm)

SOT-23 (DBZ)

3

6.9204 mm² (2.92 mm × 2.37 mm)

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

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

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 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.

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 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.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Neueste englische Version herunterladen	Datum
*	Datenblatt	LMV431l;LMV431Al;LMV431B Low-Voltage (1.24V) Adj Precision Shunt Regs datasheet (Rev. G)			22.09.2014
	E-book	Voltage Supervisor and Reset ICs: Tips, Tricks and Basics			28.06.2019

Design und Entwicklung

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Berechnungstool

SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator

This tool guides the user through the design process for the TLx431 and LM40x0 family of shunt voltage references. This calculator will recommend resistance and capacitance values to optimally meet the user's desired specifications.