Details

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Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage Range	VIN	2.5	-	36	V
Output Voltage Range	VOUT	1.25	-	35	V
Quiescent Current	IQ	-	4.0	-	mA
Shutdown Current	ISD	-	100	-	渭A
Output Current	IOUT	-	-	150	mA
Dropout Voltage	VDROPOUT	-	1.2	-	V
Load Regulation	-	-	0.01	-	%
Line Regulation	-	-	0.01	-	%
Power Supply Rejection	PSRR	-	80	-	dB
Operating Temperature	TJ	-40	-	125	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Using the LT1074CT:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.5V to 36V.
   • Use appropriate input capacitors (typically 10渭F) to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted using external resistors. The formula for calculating the output voltage is: [ V_ = 1.25 left(1 + fracright) ]
   • Choose resistor values to achieve the desired output voltage.

3. Quiescent Current (IQ):

   • The quiescent current is typically 4.0mA. This is the current consumed by the regulator when it is active but not supplying any load.

4. Shutdown Current (ISD):

   • When the shutdown pin is pulled low, the device enters a low-power mode with a typical shutdown current of 100渭A.

5. Output Current (IOUT):

   • The maximum output current is 150mA. Ensure that the load does not exceed this limit to avoid damage to the device.

6. Dropout Voltage (VDROPOUT):

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

7. Load Regulation:

   • The load regulation is typically 0.01%, indicating that the output voltage remains stable even when the load changes.

8. Line Regulation:

   • The line regulation is also typically 0.01%, meaning the output voltage remains stable even when the input voltage varies.

9. Power Supply Rejection Ratio (PSRR):

   • The PSRR is typically 80dB, which means the device effectively rejects variations in the input voltage.

10. Operating Temperature (TJ):

    • The operating temperature range is from -40掳C to 125掳C. Ensure that the device operates within this range to avoid thermal stress.

11. Storage Temperature (TSTG):

    • The storage temperature range is from -65掳C to 150掳C. Store the device in this range to prevent damage.

12. PCB Layout:

    • Use a good PCB layout to minimize noise and ensure proper heat dissipation. Place the input and output capacitors close to the regulator to reduce inductive effects.

13. Thermal Considerations:

    • If the device is expected to dissipate significant power, consider using a heatsink or a larger PCB area to improve thermal performance.

14. Capacitor Selection:

    • Use ceramic or tantalum capacitors for the input and output to ensure stability and low ESR (Equivalent Series Resistance).

By following these guidelines, you can ensure optimal performance and reliability of the LT1074CT in your application.

(For reference only)