Details
BUY MC34151 https://www.utsource.net/itm/p/12420146.html
Below is the parameter table and instructions for the MC34151, a high-side power switch from ON Semiconductor.
MC34151 Parameter Table
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | - | 60 | V | - |
| Load Current | IL | - | 2.5 | 3.0 | A | Continuous operation |
| Peak Load Current | IL(peak) | - | - | 4.0 | A | 1 ms pulse, duty cycle < 1% |
| Thermal Shutdown Temperature | TSD | - | 160 | - | °C | - |
| Under-Voltage Lockout | VUVLO | 4.0 | - | 4.5 | V | - |
| Over-Voltage Lockout | VOVO | 60 | - | 65 | V | - |
| Input Leakage Current | IIN | - | 1.0 | 5.0 | μA | VIN = 12V, VCC = 12V |
| Output Leakage Current | ILEAK | - | 100 | 200 | μA | VCC = 12V, VOUT = 0V |
| Power Dissipation | PD | - | - | 18.5 | W | Ta = 25°C, θJA = 65°C/W |
| Junction Temperature | TJ | - | - | 150 | °C | - |
Instructions for Using the MC34151
Supply Voltage (VCC):
- Ensure the supply voltage is within the range of 4.5V to 60V.
- The device will not operate below 4.5V due to under-voltage lockout (UVLO).
Load Current (IL):
- The device can handle continuous load currents up to 3.0A.
- For short pulses, the peak load current can go up to 4.0A, but ensure the duty cycle is less than 1%.
Thermal Protection:
- The device has built-in thermal shutdown protection that activates at approximately 160°C.
- Ensure proper heat sinking to prevent the junction temperature from exceeding 150°C.
Over-Voltage and Under-Voltage Lockout:
- The device will shut down if the supply voltage exceeds 65V (over-voltage lockout, OVO).
- It will also shut down if the supply voltage drops below 4.5V (under-voltage lockout, UVLO).
Input and Output Leakage Current:
- The input leakage current should be kept below 5.0μA to avoid unnecessary power loss.
- The output leakage current should be monitored and kept below 200μA when the output is off.
Power Dissipation:
- The maximum power dissipation is 18.5W at 25°C ambient temperature with a thermal resistance (θJA) of 65°C/W.
- Use appropriate heat sinks or cooling methods to manage power dissipation and maintain safe operating temperatures.
Junction Temperature:
- The maximum junction temperature is 150°C.
- Monitor the temperature to ensure it does not exceed this limit to prevent damage to the device.
Application Notes:
- Always refer to the datasheet for detailed application notes and circuit diagrams.
- Ensure all connections are secure and follow good PCB layout practices to minimize noise and interference.
By following these parameters and instructions, you can effectively use the MC34151 in your high-side power switch applications.
(For reference only)View more about MC34151 on main site
