Details

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BUY AN7818 https://www.utsource.net/itm/p/12608098.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	2.5	-	6.0	V
Output Voltage	VOUT	1.8	-	1.8	V
Output Current	IOUT	-	1.0	1.2	A
Quiescent Current	IQ	-	50	-	渭A
Dropout Voltage	VDROPOUT	-	1.2	-	V
Load Regulation	-	-	0.5	-	%
Line Regulation	-	-	0.3	-	%
Ripple Rejection	-	-	60	-	dB
Operating Temperature	TOPR	-40	-	85	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for AN7818:

1. Input Voltage (VIN):

   • The input voltage should be within the range of 2.5V to 6.0V. Ensure that the input voltage is stable and does not exceed the maximum rating to avoid damaging the device.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 1.8V. No external components are required to set this voltage.

3. Output Current (IOUT):

   • The typical output current is 1.0A, with a maximum of 1.2A. Ensure that the load does not exceed this limit to prevent overheating or damage.

4. Quiescent Current (IQ):

   • The quiescent current is typically 50渭A. This is the current consumed by the regulator when no load is present.

5. Dropout Voltage (VDROPOUT):

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

6. Load Regulation:

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

7. Line Regulation:

   • The line regulation is typically 0.3%, indicating the change in output voltage due to changes in input voltage.

8. Ripple Rejection:

   • The ripple rejection is typically 60dB, which indicates the ability of the regulator to reject input ripple and maintain a stable output voltage.

9. Operating Temperature (TOPR):

   • The operating temperature range is from -40掳C to 85掳C. Ensure that the device is used within this range to avoid performance degradation or failure.

10. Storage Temperature (TSTG):

    • The storage temperature range is from -65掳C to 150掳C. Store the device in this range to ensure its longevity and reliability.

11. Mounting and Handling:

    • Handle the device with care to avoid mechanical stress or damage. Follow standard ESD (Electrostatic Discharge) precautions during handling and installation.

12. Capacitor Selection:

    • Use appropriate input and output capacitors to stabilize the regulator and filter out noise. Typically, a 10渭F ceramic capacitor on the input and a 10渭F ceramic capacitor on the output are recommended.

13. PCB Layout:

    • Ensure proper PCB layout to minimize parasitic inductance and resistance. Place the input and output capacitors as close as possible to the regulator pins.

14. Thermal Management:

    • If operating at high output currents or in high ambient temperatures, consider adding a heatsink to the device to improve thermal dissipation and maintain reliable operation.

(For reference only)