Share:
Specifications
SKU: 8519911
| Parameter | Symbol | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Input Voltage | V_IN | 27 | - | 58 | V | |
| Output Voltage | V_OUT | 4.5 | - | 12 | V | Adjustable |
| Output Current | I_OUT | - | 1.5 | 3 | A | Continuous |
| Switching Frequency | f_SW | - | 100 | - | kHz | Fixed |
| Efficiency | η | - | 90 | - | % | Typical at nominal load |
| Quiescent Current | I_Q | - | 2.5 | - | mA | Shutdown mode |
| Load Regulation | - | - | 1 | - | % | Over full load range |
| Line Regulation | - | - | 0.5 | - | %/V | Over full input range |
| Dropout Voltage | V_DROPOUT | - | 0.5 | - | V | At full load |
| Operating Temperature | T_OP | -40 | - | 85 | °C | Junction temperature |
| Storage Temperature | T_STG | -55 | - | 150 | °C | |
| Protection Features | - | - | - | - | - | Overvoltage, overcurrent, thermal shutdown |
Instructions for Use
Input Connection:
- Connect the input voltage (V_IN) to the power supply within the specified range of 27V to 58V.
- Ensure the input capacitor (C_IN) is placed close to the IC to filter out noise and provide stable operation.
Output Configuration:
- The output voltage (V_OUT) can be adjusted using external resistors R1 and R2 according to the formula: [ V_ = 1.23 left(1 + fracright) ]
- Choose appropriate resistor values to achieve the desired output voltage within the range of 4.5V to 12V.
Output Capacitor:
- Connect an output capacitor (C_OUT) to stabilize the output voltage and reduce ripple. A typical value is 10μF to 100μF.
Thermal Management:
- Ensure adequate heat dissipation by mounting the IC on a heatsink if operating at high loads or in high ambient temperatures.
- Monitor the junction temperature to stay within the operating range of -40°C to 85°C.
Protection:
- The IC includes built-in overvoltage, overcurrent, and thermal shutdown protection. However, it is recommended to design the circuit with additional protection components such as fuses and transient voltage suppressors (TVS) for robustness.
Shutdown Mode:
- To enter shutdown mode, pull the SHDN pin low. The quiescent current will drop to approximately 2.5mA, reducing power consumption.
Layout Considerations:
- Place the input and output capacitors as close as possible to the IC to minimize parasitic inductance and improve performance.
- Use wide traces for power and ground connections to reduce resistance and improve heat dissipation.
Testing and Troubleshooting:
- Verify the input voltage and ensure it is within the specified range.
- Measure the output voltage to confirm it matches the expected value based on the resistor configuration.
- Check for any overheating issues and ensure proper cooling.
- If the IC does not function as expected, check for correct polarity and connections, and ensure all components are functioning properly.
Inquiry - ICE380365J
