LM431 DATASHEET PDF

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The LM is a 3-terminal adjustable shunt regulator with guaranteed temperature stability over the entire tempera- ture range of operation The output voltage. LM Adjustable Precision Zener Shunt Regulator An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in. View LM Datasheet datasheet from Texas Instruments at Digikey.

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Test Circuit for Off-State Current. Deviation of Reference Input Current over. Before going for application circuit of LMlet us first understand the internal working of the device and for that consider the functional diagram of the device as shown below.

Current Limiter or Current Source. The areas under the curves represent conditions that may cause the device to oscillate.

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Input Current vs V Z.

Symbol and Functional Diagrams. Now let us consider a simple application circuit for the device as shown below: C, the SO-8 at 6. It is a 3-terminal shunt regulator with guaranteed temperature stability over the entire temperature range of operation.

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Infrared or Convection 20 sec. V Z from 10V to 36V. Pin Configuration LM has three pins and function of each pin is mentioned below. C, the SOT at 2. LM can be configured in many application circuits and a few are stated in the datasheet.

LM is a regulator IC featured with adjustable output voltage. A critical component is any component of a life. Distributors for availability and specifications. Life support devices or systems are devices or.

National Semiconductor

C unless otherwise specified. To ensure that the geometry of the micro SMD package. Deviation of Reference Input Voltage Over.

Electrical specifications do not apply when operating the device. Test Circuit for Curve A Above. Whenever the output crosses threshold threshold is value datashete by R2 and R3 value the op-amp get feedback via Vref and it drives the transistor ON.

It popular application include. Single Supply Comparator with. Ratio of the Change in Reference Voltage.

Dynamic Impedance vs Frequency. Internal Power Dissipation Notes 3, 4. C, slope is positive. The LM is a 3-terminal adjustable shunt regulator with.

Adjustable Precision Zener Shunt Regulator. Deviation of reference input voltage, V DEVis defined as the maximum variation of the reference input voltage over the full temperature range. When the transistor turns ON the device draws current and because of this current drawing a voltage drop appears across R1 resistor which is in series with voltage source V1.

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National Semiconductor – datasheet pdf

Minimum Cathode Current for Regulation. National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

Also Vref is the voltage at the midpoint voltage divider dataaheet formed by the two resistors R2 and R3. Must be electrically isolated from the.

The dynamic output impedance, r Zis defined as: Also the current draw by op-amp and resistor network is neglected for easy explanation.

Submitted by admin on 18 November Here Ic is the current drawn by the transistor. It is now available in a chip sized pack. Output Control of a Three. Absolute Maximum Ratings Note 2. The output voltage may be set at any level greater than 2.