Details

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BUY 78L12 WS TO-92 https://www.utsource.net/itm/p/11724666.html

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掳C to +85掳C
Storage Temperature Range (Tstg)	Storage Temperature Range	-65掳C to +150掳C
Thermal Resistance (胃JA)	Junction-to-Ambient Thermal Resistance	150 掳C/W

Instructions for Use:

1. 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).

2. Capacitors:

   • Place a 0.33 渭F capacitor between the input and ground close to the regulator.
   • Place a 0.1 渭F capacitor between the output and ground close to the regulator.

3. 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.

4. Input Filtering:

   • Ensure that the input voltage is clean and stable. Use appropriate filtering if the input source is noisy.

5. Output Stability:

   • The output capacitors help stabilize the output voltage. Ensure they are of good quality and rated for the operating temperature range.

6. Transient Protection:

   • Consider adding transient protection diodes to protect the regulator from voltage spikes.

7. 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.

8. Testing:

   • Before finalizing the design, test the regulator under all expected operating conditions to ensure reliable performance.

(For reference only)