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Specifications
SKU: 11724666
| Parameter | Description | Value |
|---|---|---|
| Part Number | Component Identifier | 78L12 WS |
| Package Type | Physical Package | TO-92 |
| Output Voltage (Vout) | Regulated Output Voltage | 12 V |
| Input Voltage Range (Vin) | Operating Input Voltage Range | 14.5 V to 25 V |
| Output Current (Iout) | Maximum Continuous Output Current | 100 mA |
| Quiescent Current (Iq) | Typical Quiescent Current at No Load | 8 mA |
| Line Regulation | Change in Output Voltage with Respect to Input Voltage | 0.01% / V |
| Load Regulation | Change in Output Voltage with Respect to Load Current | 0.1% / 10 mA |
| Dropout Voltage (Vdo) | Minimum Input-to-Output Voltage Difference for Regulation | 2 V |
| Operating Temperature Range (Tamb) | Ambient Operating Temperature Range | -40°C to +85°C |
| Storage Temperature Range (Tstg) | Storage Temperature Range | -65°C to +150°C |
| Thermal Resistance (θJA) | Junction-to-Ambient Thermal Resistance | 150 °C/W |
Instructions for Use:
Power Supply Connection:
- Connect the input voltage (Vin) to the middle pin (Pin 2).
- Connect the output voltage (Vout) to the right pin (Pin 3).
- Ground (GND) should be connected to the left pin (Pin 1).
Capacitors:
- Place a 0.33 μF capacitor between the input and ground close to the regulator.
- Place a 0.1 μF capacitor between the output and ground close to the regulator.
Heat Dissipation:
- The 78L12 WS is designed to operate without a heatsink for typical applications. However, if the power dissipation exceeds 150 mW, consider using a heatsink or improving airflow.
Input Filtering:
- Ensure that the input voltage is clean and stable. Use appropriate filtering if the input source is noisy.
Output Stability:
- The output capacitors help stabilize the output voltage. Ensure they are of good quality and rated for the operating temperature range.
Transient Protection:
- Consider adding transient protection diodes to protect the regulator from voltage spikes.
Mounting:
- Mount the regulator in a position where it can dissipate heat effectively. Avoid placing it near heat sources or in enclosed spaces without adequate ventilation.
Testing:
- Before finalizing the design, test the regulator under all expected operating conditions to ensure reliable performance.
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