Specifications
SKU: 11546053
Parameter | Symbol | Min | Typ | Max | Unit |
---|---|---|---|---|---|
Input Voltage | VIN | 4.5 | - | 36 | V |
Output Voltage | VOUT | 1.23 | - | 18 | V |
Output Current | IOUT | - | 1.5 | 3 | A |
Quiescent Current | IQ | - | 0.02 | 0.05 | A |
Dropout Voltage | VDROPOUT | - | 0.8 | 1.5 | V |
Operating Temperature | TOPR | -40 | - | 125 | °C |
Storage Temperature | TSTG | -65 | - | 150 | °C |
Thermal Resistance (θJA) | θJA | - | 45 | - | °C/W |
Instructions for Use:
Input Voltage (VIN):
- Ensure the input voltage is within the range of 4.5V to 36V.
- Do not exceed the maximum input voltage to avoid damage to the device.
Output Voltage (VOUT):
- The output voltage can be adjusted between 1.23V and 18V.
- Use external resistors to set the desired output voltage according to the formula provided in the datasheet.
Output Current (IOUT):
- The typical output current is 1.5A, with a maximum of 3A.
- Ensure the load does not exceed the maximum output current to prevent overheating or damage.
Quiescent Current (IQ):
- The quiescent current is typically 20mA and can reach up to 50mA.
- This current is drawn by the regulator even when there is no load.
Dropout Voltage (VDROPOUT):
- The dropout voltage is typically 0.8V and can reach up to 1.5V.
- Ensure the input voltage is at least this much higher than the output voltage to maintain regulation.
Operating Temperature (TOPR):
- The operating temperature range is from -40°C to 125°C.
- Avoid operating the device outside this range to ensure reliable performance.
Storage Temperature (TSTG):
- The storage temperature range is from -65°C to 150°C.
- Store the device in a dry environment to prevent moisture damage.
Thermal Resistance (θJA):
- The thermal resistance is typically 45°C/W.
- Use a heatsink if the device will operate at high power levels to improve heat dissipation.
PCB Layout:
- Place the input and output capacitors close to the regulator to minimize noise and improve stability.
- Use wide traces for the input and output paths to reduce resistance and inductance.
Capacitors:
- Use ceramic capacitors for the input and output to ensure stability and low ESR.
- Recommended values are 10μF for the input and 10μF for the output.
Protection:
- The device includes overcurrent and thermal protection.
- In case of overcurrent, the output will be shut down until the condition is resolved.
- If the device exceeds its thermal limit, it will shut down to prevent damage.
Testing:
- Before finalizing the design, test the regulator under various conditions to ensure it meets the required specifications.
- Monitor the output voltage and current to ensure stability and proper operation.
Inquiry - LD7550BBL