Details

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BUY UA78GU1C https://www.utsource.net/itm/p/12610230.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VI	2.5	-	13	V
Output Voltage	VO	-	1.0	-	V
Output Current	IO	-	1.0	1.5	A
Dropout Voltage	VD	-	1.2	-	V
Quiescent Current	IQ	-	5.0	10	mA
Load Regulation	-	-	0.5	-	%
Line Regulation	-	-	0.1	-	%
Ripple Rejection	-	-	60	-	dB
Operating Temperature	TOP	-40	-	125	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Use:

1. Input Voltage (VI):

   • Ensure the input voltage is within the range of 2.5V to 13V.
   • The input voltage must be at least 1.2V higher than the output voltage to maintain regulation.

2. Output Voltage (VO):

   • The UA78GU1C is designed to provide a fixed output voltage of 1.0V.

3. Output Current (IO):

   • The maximum continuous output current is 1.5A, with a typical value of 1.0A.
   • For reliable operation, ensure that the load does not exceed the maximum output current.

4. Dropout Voltage (VD):

   • The dropout voltage is the minimum difference between the input and output voltages required to maintain regulation.
   • The typical dropout voltage is 1.2V.

5. Quiescent Current (IQ):

   • The quiescent current is the current drawn by the regulator when no load is applied.
   • The typical quiescent current is 5.0mA, with a maximum of 10mA.

6. Load Regulation:

   • The load regulation is the change in output voltage due to changes in load current.
   • The typical load regulation is 0.5%.

7. Line Regulation:

   • The line regulation is the change in output voltage due to changes in input voltage.
   • The typical line regulation is 0.1%.

8. Ripple Rejection:

   • The ripple rejection is the ability of the regulator to suppress input voltage variations.
   • The typical ripple rejection is 60dB.

9. Operating Temperature (TOP):

   • The device can operate within a temperature range of -40掳C to 125掳C.
   • Ensure that the ambient temperature and heat dissipation are managed to keep the device within this range.

10. Storage Temperature (TSTG):

    • The device can be stored within a temperature range of -65掳C to 150掳C.
    • Avoid exposing the device to extreme temperatures for extended periods.

Additional Notes:

• Heat Dissipation:
  • For high current applications, use a suitable heatsink to dissipate the heat generated by the regulator.
• Capacitors:
  • Use appropriate input and output capacitors to stabilize the regulator and reduce ripple.
  • Recommended values: 10渭F ceramic or tantalum capacitor on the input and 10渭F ceramic or tantalum capacitor on the output.
• PCB Layout:
  • Ensure proper PCB layout to minimize noise and improve thermal performance.
  • Keep the input and output traces short and wide to reduce inductance and resistance.

(For reference only)