Details

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BUY UA7815C https://www.utsource.net/itm/p/12610676.html

Parameter	Description	Min	Typ	Max	Unit
Input Voltage (VI)	Operating input voltage range	17.5	-	30	V
Output Voltage (VO)	Fixed output voltage	-	15	-	V
Output Current (IO)	Continuous output current	-	1.5	-	A
Line Regulation	Change in output voltage with respect to input voltage	-	0.04	-	%/V
Load Regulation	Change in output voltage with respect to load current	-	0.1	-	%/A
Dropout Voltage (VDO)	Minimum input-to-output voltage difference for regulation	-	2	-	V
Quiescent Current (IQ)	Current consumed by the regulator when no load is applied	-	5	-	mA
Thermal Shutdown Temperature (TSD)	Temperature at which the device shuts down to prevent damage	-	175	-	掳C
Short-Circuit Protection	Protection against short circuits at the output	Yes	-	-	-

Instructions for Using UA7815C

1. Input Voltage:

   • Ensure the input voltage is within the range of 17.5V to 30V.
   • The input voltage should be at least 2V higher than the output voltage to maintain regulation.

2. Output Voltage:

   • The fixed output voltage is 15V. No external components are required to set this voltage.

3. Output Current:

   • The maximum continuous output current is 1.5A. Ensure the load does not exceed this limit to avoid overheating or damage.

4. Line Regulation:

   • The output voltage will vary by 0.04% per volt change in input voltage. This is typically negligible for most applications.

5. Load Regulation:

   • The output voltage will vary by 0.1% per ampere change in load current. This is also typically negligible for most applications.

6. Dropout Voltage:

   • The dropout voltage is approximately 2V. Ensure the input voltage is at least 2V higher than the output voltage to maintain regulation.

7. Quiescent Current:

   • The quiescent current is about 5mA. This is the current consumed by the regulator itself, even when there is no load.

8. Thermal Shutdown:

   • The device will shut down if the temperature exceeds 175掳C to prevent damage. Ensure proper heat dissipation, especially under high load conditions.

9. Short-Circuit Protection:

   • The device has built-in short-circuit protection. If a short circuit occurs, the output current will be limited to prevent damage.

10. Mounting and Heat Dissipation:

    • Use a suitable heatsink if the device is expected to operate at high output currents or in high ambient temperatures.
    • Ensure good thermal contact between the regulator and the heatsink.

11. Capacitors:

    • It is recommended to use input and output capacitors to stabilize the voltage and reduce ripple.
    • Typical values are 0.33渭F for the input capacitor and 0.1渭F for the output capacitor.

12. Layout Considerations:

    • Keep the input and output leads as short as possible to minimize noise and improve stability.
    • Place the capacitors close to the regulator to ensure effective filtering.

By following these guidelines, you can ensure reliable operation of the UA7815C voltage regulator in your application.

(For reference only)