Details

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BUY TL431IDBZR https://www.utsource.net/itm/p/5276701.html
ADJUSTABLE PRECISION SHUNT REGULATORS

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Reference Voltage	Vref	Iref = 1 mA	2.45	2.5	2.55	V
Cathode Current	IK			1.0	100	mA
Output Current	IO			1.0	100	mA
Operating Temperature	Topr		-40		125	°C
Storage Temperature	Tstg		-65		150	°C
Thermal Resistance	RθJA	Junction to Ambient		150		°C/W

Instructions for TL431IDBZR:

1. Power Supply and Connections:

   • Ensure the power supply voltage is within the specified limits.
   • Connect the cathode (K) to the reference voltage source.
   • Connect the anode (A) to the output or load circuit.
   • The reference pin (R) should be connected to a voltage divider network that sets the desired output voltage.

2. Reference Voltage Adjustment:

   • Use external resistors to set the reference voltage across the reference pin and cathode.
   • The formula to calculate the output voltage (Vout) is: Vout = Vref * (1 + R1/R2) + Iadj * R1, where R1 and R2 are the resistor values in the voltage divider.

3. Thermal Management:

   • Ensure adequate heat dissipation if operating at high currents or in high ambient temperatures.
   • Check the thermal resistance (RθJA) to ensure the junction temperature does not exceed the maximum operating temperature.

4. Stability Considerations:

   • Include a bypass capacitor between the cathode and ground to improve stability and reduce noise.
   • Ensure the loop gain is sufficient for stable operation when used in feedback circuits.

5. Handling Precautions:

   • Handle with care to avoid damage from electrostatic discharge (ESD).
   • Follow proper soldering techniques to prevent thermal stress on the component.

6. Storage:

   • Store in a dry, cool place away from direct sunlight.
   • Observe the storage temperature limits to prevent degradation of performance characteristics.

(For reference only)