LM431 DATASHEET PDF

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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C, the SOT at 2. Input Current vs V Z.

Whenever the output crosses threshold threshold is value determined by R2 and R3 value the op-amp get feedback via Vref and it drives the transistor ON. The l,431 under the curves represent conditions that may cause the device to oscillate.

Test Circuit for Curve A Above. Here Ic is the current drawn by the transistor.

Ratio of the Change in Reference Voltage. Electrical specifications do not apply when operating the device. Now let us consider a simple application circuit for the device as shown below: Single Supply Comparator with.

TL — Programmable Reference Voltage. When the device is programmed with two external resistors, R1 and R2, see Figure 2the dynamic output impedance of the overall circuit, r Zis defined as: 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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Also the datxsheet draw by op-amp and resistor network is neglected for easy explanation. C, slope is positive. Distributors for availability and specifications. Deviation of Reference Input Current over. Dynamic Impedance vs Frequency. Absolute Maximum Ratings Note 2. A datasneet component is any component of a life. LM can be configured in many application circuits and a few are stated in the datasheet.

Dynamic Output Impedance Note 6. Minimum Cathode Current for Regulation. In a similar way we can setup other application circuits. Internal Power Dissipation Notes 3, 4. Wave Soldering 10 sec. C unless otherwise specified.

LM Zener Shunt Regulator Pinout, Features, Circuit & Datasheet

Symbol and Functional Diagrams. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. AN for more detailed information regarding board.

To ensure that the geometry of the micro SMD package. Above this temperature, derate the TO at 6. The LM is a 3-terminal adjustable shunt regulator with. Before going for application circuit of LMlet us datawheet understand the internal working of the device and for that consider the functional diagram of the device as shown below.

National Semiconductor

Life support devices or systems are devices or. The output voltage may be set at any level greater than 2. LM is a regulator IC featured with adjustable output voltage.

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Here reference voltage Vref is the voltage at the non-inverting terminal of the op-amp and this voltage determines whether the op-amp outputs positive voltage or not. Dxtasheet Circuit for Off-State Current. 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.

V Z from 10V to 36V.

Higher Current Shunt Regulator. Datasjeet Control of a Three. So in the final result Vo will always be adjusted to float near the measured value by op-amp setup or LM Deviation of reference input voltage, V DEVis defined as the maximum variation of the reference input voltage over the full temperature range.

Pin Configuration LM has three pins and function of each pin is mentioned below.

The dynamic output impedance, r Zis defined as: Also Vref is the voltage at the midpoint voltage divider network formed by the two resistors R2 and R3. Current Limiter or Current Source.

Infrared or Convection 20 sec.