Specifications
SKU: 1873113
Switching Regulator Applications
Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
---|---|---|---|---|---|---|
Input Voltage | VIN | 4.5 | - | 40 | V | - |
Output Voltage | VOUT | - | 5 | - | V | Fixed |
Output Current | IOUT | - | - | 3 | A | Continuous |
Efficiency | η | - | 85 | - | % | At nominal conditions |
Switching Frequency | fSW | - | 150 | - | kHz | - |
Quiescent Current | IQ | - | 2 | - | mA | No load |
Dropout Voltage | VDROPOUT | - | 1.2 | - | V | At full load |
Load Regulation | ΔVOUT/ΔIOUT | - | 0.5 | - | % | From 0 to 3 A |
Line Regulation | ΔVOUT/ΔVIN | - | 0.1 | - | % | Over input voltage range |
Ripple Voltage | VRIPPLE | - | 30 | - | mVpp | At full load |
Operating Temperature | TOPR | -40 | - | 85 | °C | Storage and operation |
Storage Temperature | TSTG | -40 | - | 125 | °C | - |
Instructions for Use:
Input Connection:
- Connect the input voltage (VIN) to the input terminal of the TK7A50D.
- Ensure the input voltage is within the specified range (4.5V to 40V).
Output Connection:
- Connect the output terminals to your load.
- The output voltage (VOUT) is fixed at 5V.
Heat Dissipation:
- For continuous operation at high current (up to 3A), ensure adequate heat dissipation.
- Use a heatsink if necessary, especially when operating near the maximum output current.
Capacitor Requirements:
- Place a 10μF ceramic capacitor close to the input and output terminals to minimize noise and improve stability.
- Additional capacitors may be required for specific applications to meet ripple and transient response requirements.
PCB Layout:
- Keep the PCB traces short and wide to reduce resistance and inductance.
- Use a ground plane to improve thermal performance and reduce noise.
Overcurrent Protection:
- The TK7A50D has built-in overcurrent protection that limits the output current to prevent damage.
- If the output current exceeds the limit, the device will shut down until the overload condition is removed.
Thermal Considerations:
- Monitor the temperature of the device during operation.
- Do not exceed the maximum operating temperature (85°C) to avoid thermal shutdown or damage.
Storage:
- Store the device in a dry, cool place away from direct sunlight.
- Ensure the storage temperature does not exceed the specified range (-40°C to 125°C).
Testing:
- Before finalizing the design, test the circuit under various conditions to ensure it meets all performance specifications.
- Verify the output voltage, current, and efficiency under typical and extreme conditions.
Inquiry - TK7A50D