Details

---

BUY AP1084D33L-13 https://www.utsource.net/itm/p/12607123.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	V_IN	4.5	-	20	V
Output Voltage	V_OUT	-	3.3	-	V
Output Current	I_OUT	-	800	-	mA
Dropout Voltage	V_DROPOUT	-	1.2	-	V
Quiescent Current	I_Q	-	50	-	渭A
Shutdown Current	I_SHUTDOWN	-	0.1	-	渭A
Operating Temperature	T_OP	-40	-	125	掳C
Storage Temperature	T_STG	-65	-	150	掳C
Thermal Resistance (胃JA)	胃JA	-	50	-	掳C/W

Instructions for Use:

1. Input Voltage Range:

   • Ensure the input voltage is within the range of 4.5V to 20V to avoid damage to the device.

2. Output Voltage:

   • The output voltage is fixed at 3.3V. No external resistors are required for setting the output voltage.

3. Output Current:

   • The device can provide up to 800mA of output current. Ensure that the load does not exceed this limit to prevent overheating or damage.

4. Dropout Voltage:

   • The dropout voltage is typically 1.2V. This means the input voltage should be at least 1.2V higher than the output voltage to maintain regulation.

5. Quiescent Current:

   • The quiescent current is typically 50渭A. This is the current consumed by the device when it is active but not supplying any load.

6. Shutdown Current:

   • When the shutdown pin is pulled low, the device enters a low-power mode with a typical shutdown current of 0.1渭A.

7. Operating Temperature:

   • The device is designed to operate within the temperature range of -40掳C to 125掳C. Ensure that the ambient temperature does not exceed these limits.

8. Storage Temperature:

   • The device can be stored in temperatures ranging from -65掳C to 150掳C.

9. Thermal Management:

   • The thermal resistance (胃JA) is typically 50掳C/W. Proper heat sinking may be necessary if the device is operating at high power levels or in high ambient temperatures to ensure reliable operation.

10. Layout Considerations:

    • Place the input and output capacitors as close as possible to the device to minimize noise and improve stability.
    • Use a 1渭F ceramic capacitor for both input and output for stable operation.

11. Shutdown Pin:

    • To enable the device, leave the shutdown pin open or connect it to the input voltage. To disable the device, pull the shutdown pin low.

12. Capacitor Selection:

    • Use X7R or X5R ceramic capacitors for both input and output to ensure stable operation and low ESR (Equivalent Series Resistance).

13. PCB Layout:

    • Ensure proper PCB layout with wide traces for power and ground to reduce resistance and inductance, which can affect performance.

14. Power-On Sequence:

    • There is no specific power-on sequence required for this device. However, ensure that the input voltage is applied before the load is connected to avoid transient issues.

(For reference only)