Details

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BUY TL431 431 SOT-89 https://www.utsource.net/itm/p/8647427.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Reference Voltage	Vref	Iref = 1.0mA	2.45	2.5	2.55	V
Cathode Current	Ik	Vref ≤ Vka ≤ 36V	1.0	-	100	mA
Temperature Coefficient	TCvref	Iref = 1.0mA, TA = 25°C	-100	-	+100	ppm/°C
Output Leakage Current	Ileak	Vka = 0.5V, Iref = 0	-	0.1	-	μA
Operating Junction Temp	Tj		-40	-	150	°C
Storage Temperature	Tstg		-65	-	150	°C

Instructions for Use:

1. Mounting and Handling:

   • Handle the TL431 with care to avoid damage to its pins or body.
   • Ensure that the device is mounted correctly on the PCB according to the SOT-89 footprint.

2. Power Supply:

   • The TL431 can operate over a wide range of supply voltages from 2.5V to 36V at the cathode (K) pin relative to the anode (A) pin.

3. Reference Voltage Adjustment:

   • Adjust the resistor network connected between the reference (R) pin and ground to set the desired output voltage.

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating near the maximum junction temperature.
   • Avoid exceeding the maximum storage temperature during handling and storage.

5. Leakage Current:

   • Be aware of the potential leakage current which can affect low-power designs; ensure it is within acceptable limits for your application.

6. Stability:

   • To ensure stability, place a capacitor close to the device as recommended by the manufacturer’s guidelines.

7. Testing:

   • Before final assembly, test the TL431 in a controlled environment to confirm it meets all operational parameters.

8. Compliance:

   • Ensure compliance with all relevant safety and environmental regulations when using this component in end products.

(For reference only)