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BUY LT1085CT-5 https://www.utsource.net/itm/p/7671975.html
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Parameter	Min	Typical	Max	Unit
Input Voltage	7	-	30	V
Output Voltage	-	5.0	-	V
Output Current	-	1.0	1.1	A
Quiescent Current	-	4.0	-	mA
Dropout Voltage	-	1.0	-	V
Line Regulation	-	0.002	-	%/V
Load Regulation	-	0.01	-	%
PSRR at 1kHz	-	77	-	dB
Operating Temperature	-40	-	85	°C

Instructions for Using LT1085CT-5

1. Input Voltage: Ensure the input voltage is within the range of 7V to 30V. The higher input voltage margin allows for better regulation and less heat dissipation.

2. Output Voltage: The LT1085CT-5 provides a fixed output voltage of 5V. No external components are required for setting this voltage.

3. Output Current: This regulator can supply up to 1.1A of current, with typical operation at 1.0A. Ensure your load does not exceed this limit to avoid overheating or damage.

4. Quiescent Current: The quiescent current is typically 4mA. This is the current consumed by the regulator itself when it is active but not supplying any load current.

5. Dropout Voltage: The dropout voltage is 1V, meaning the input voltage must be at least 1V higher than the output voltage (6V minimum) for proper regulation.

6. Line Regulation: With line regulation of 0.002%/V, the output voltage changes very little with variations in input voltage.

7. Load Regulation: At 0.01%, the output voltage remains stable despite changes in load current.

8. Power Supply Rejection Ratio (PSRR): At 77dB at 1kHz, the regulator effectively reduces ripple from the input voltage.

9. Operating Temperature: The device operates reliably between -40°C and +85°C. Ensure adequate heat sinking if operating near the upper temperature limit or under high load conditions.

For detailed application circuits and further specifications, refer to the Linear Technology datasheet for the LT1085CT-5.

(For reference only)