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Specifications
SKU: 79385
PROGRAMMABLE PRECISION REFERENCES
Below is the parameter table and instructions for the TL4311 adjustable precision shunt regulator.
TL4311 Parameter Table
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Reference Voltage | Vref | 2.465 | 2.500 | 2.535 | V | IR = 1 mA |
| Cathode Current | IC | 0.0 | - | 100 | mA | |
| Output Current | IOUT | 1.0 | 10 | 100 | mA | |
| Output Voltage Range | VOUT | 2.5 | - | 36 | V | |
| Line Regulation | ΔVOUT/ΔVIN | - | 0.001 | 0.01 | %/V | VIN = 5 to 36 V, IOUT = 10 mA |
| Load Regulation | ΔVOUT/ΔIOUT | - | 0.01 | 0.1 | %/mA | VIN = 5 V, IOUT = 1 to 100 mA |
| Temperature Coefficient | TC | -10 | -5 | 5 | ppm/°C | VOUT = 2.5 V, IOUT = 10 mA, TA = 25°C to 85°C |
| Storage Temperature Range | TSTG | -65 | - | 150 | °C | |
| Operating Junction Temperature | TJ | -40 | - | 150 | °C | |
| Power Dissipation | PD | - | - | 1000 | mW | TA = 25°C |
Instructions for Using TL4311
Circuit Configuration:
- The TL4311 can be used as a precision shunt regulator or as part of a linear voltage regulator.
- Connect the reference pin (R) to a voltage divider network to set the desired output voltage.
- The cathode (K) should be connected to the load, and the anode (A) should be connected to ground.
Setting the Output Voltage:
- Use the formula ( V_ = V_ left(1 + fracright) ) to calculate the output voltage, where ( R_1 ) and ( R_2 ) are the resistors in the voltage divider network.
- Ensure that the current through ( R_1 ) is at least 1 mA to maintain regulation.
Thermal Considerations:
- Ensure adequate heat dissipation if the device is operating at high power levels.
- Use a heatsink if necessary to keep the junction temperature within the specified range.
Stability:
- To ensure stability, add a bypass capacitor (typically 10 nF to 100 nF) between the cathode and anode pins.
- For better performance, use a low ESR (Equivalent Series Resistance) capacitor.
Protection:
- Add a reverse-biased diode across the output to protect against reverse voltage conditions.
- Use a series resistor or fuse to limit inrush current during startup.
Testing:
- Measure the output voltage with a multimeter to ensure it meets the desired specifications.
- Test the load regulation by varying the load current and observing the change in output voltage.
By following these instructions, you can effectively use the TL4311 in your circuit designs.
(For reference only)Inquiry - TL4311
