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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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Also Vref is the voltage at the midpoint voltage divider network formed by the two resistors R2 and R3. C, the SO-8 at 6. It is a 3-terminal shunt regulator with guaranteed temperature stability over the entire temperature range of operation.

LM Datasheet(PDF) – National Semiconductor (TI)

Deviation of Reference Input Voltage Over. Pin Configuration LM has three pins and function of each pin is mentioned below. The dynamic output impedance, r Zis defined as: When the device is programmed with two external resistors, R1 and R2, see Figure 2the dynamic output impedance of the overall circuit, datazheet Zis defined as: Electrical specifications do not apply when operating the device.

Due to the sharp turn-on characteristics this device is an excellent replacement for many zener diode applications. The output voltage may be set at any level greater than 2. Submitted by admin on 18 November Dynamic Impedance vs Frequency.

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TL — Programmable Reference Voltage. Higher Current Shunt Regulator. AN for more detailed information regarding board. The output voltage may be set at any level.

National Semiconductor

To ensure that the geometry of the micro SMD package. 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. Minimum Cathode Current for Regulation. Output Control of a Three. 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.

Infrared or Convection 20 sec. Must be electrically isolated from the.

Adjustable Precision Zener Shunt Regulator. It popular application include. Symbol and Functional Diagrams. Internal Power Dissipation Notes 3, 4.

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.

Here Ic is the current dahasheet by the transistor. C, the SOT at 2. Ratio of the Change in Reference Voltage. 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. Test Circuit for Off-State Current.

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Current Limiter or Current Source. In a similar way we can setup other application circuits. Life support devices or systems are devices or. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Distributors for availability and specifications. 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. Test Circuit for Curve A Above. Wave Soldering 10 sec.

Now let us consider a simple application circuit for the device as shown below: Above this temperature, derate the TO at 6. V Z from 10V to 36V.

The areas dataseet the curves represent conditions that may cause the device to oscillate. Ratings apply to ambient temperature at 25?

Dynamic Output Impedance Note 6. Deviation of Reference Input Current over. C, slope is positive.