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Specifications
SKU: 11723945
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage (VIN) | Operating input voltage range | 4.5 | - | 40 | V |
| Output Voltage (VOUT) | Adjustable output voltage | 1.25 | - | 37 | V |
| Output Current (IOUT) | Maximum continuous output current | - | 1.5 | - | A |
| Quiescent Current (IQ) | Supply current at no load | - | 5 | - | mA |
| Dropout Voltage (VDROP) | Minimum input-to-output voltage difference for regulation | - | 1.2 | - | V |
| Line Regulation | Change in output voltage due to input voltage variation | - | 0.01 | - | %/V |
| Load Regulation | Change in output voltage due to load current variation | - | 0.1 | - | %/A |
| Thermal Shutdown Temperature (TSD) | Temperature at which the device shuts down to prevent damage | - | 160 | - | °C |
| Operating Junction Temperature (TJ) | Range of temperatures over which the device can operate | -40 | - | 125 | °C |
| Storage Temperature (TSTG) | Temperature range for storage | -65 | - | 150 | °C |
Instructions for Using the KA3882
Input Connection:
- Connect the input voltage (VIN) to the IN pin.
- Ensure the input voltage is within the specified range (4.5V to 40V).
Output Configuration:
- Use an external resistor divider to set the desired output voltage (VOUT).
- The formula to calculate the output voltage is: ( V_ = 1.25 left(1 + fracright) ), where ( R_1 ) and ( R_2 ) are the resistors in the feedback network.
Output Capacitor:
- Place a capacitor (typically 10μF to 100μF) between the OUT pin and GND to stabilize the output voltage and filter out noise.
Ground Connection:
- Connect the ground (GND) pin to the common ground of your circuit.
Thermal Management:
- Ensure proper heat dissipation by using a heatsink if the device is operating at high currents or in high ambient temperatures.
Protection:
- The KA3882 includes thermal shutdown and short-circuit protection. However, it is recommended to add external fuses or current-limiting resistors for additional safety.
Layout Considerations:
- Keep the input and output capacitors as close as possible to the respective pins to minimize parasitic inductance and improve stability.
- Use wide traces for power and ground connections to reduce resistance and improve performance.
Testing:
- Before finalizing the design, test the circuit under various conditions (different loads, input voltages, and temperatures) to ensure stable operation.
By following these instructions, you can effectively use the KA3882 in your power supply designs.
(For reference only)Inquiry - KA3882
