Details

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BUY MIC2981/82BN https://www.utsource.net/itm/p/12604076.html

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Input Voltage	VIN	Continuous	2.7	-	5.5	V
Output Voltage	VOUT	Regulation	1.23	-	1.23	V
Output Current	IOUT	Continuous	-	1.0	1.5	A
Dropout Voltage	VDROPOUT	IOUT = 1A, VIN = 3.3V	-	0.4	0.6	V
Quiescent Current	IQ	VIN = 3.3V, IOUT = 0A	-	4.5	7.0	mA
Shutdown Current	ISD	VIN = 3.3V, SHDN = 0V	-	0.1	1.0	渭A
Thermal Shutdown Temperature	TSD	-	150	-	-	掳C
Operating Junction Temperature	TJ	-	-40	-	125	掳C
Storage Temperature	TSTG	-	-65	-	150	掳C

Instructions for Using the MIC2981/82BN:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Use appropriate input capacitors (typically 1渭F ceramic) to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 1.23V.
   • Place an output capacitor (typically 10渭F tantalum or ceramic) close to the output pin to ensure stability and reduce ripple.

3. Output Current (IOUT):

   • The device can provide up to 1.5A of continuous output current, but it is typically rated for 1.0A.
   • Ensure adequate heat sinking if operating near the maximum current to prevent thermal shutdown.

4. Dropout Voltage (VDROPOUT):

   • The dropout voltage is the difference between the input and output voltages when the regulator is in regulation.
   • At 1A output current and 3.3V input, the typical dropout voltage is 0.4V, with a maximum of 0.6V.

5. Quiescent Current (IQ):

   • The quiescent current is the current drawn by the regulator itself when no load is present.
   • It is typically 4.5mA at 3.3V input and 0A output.

6. Shutdown Current (ISD):

   • When the shutdown pin (SHDN) is pulled low, the regulator enters a low-power mode.
   • The shutdown current is typically 0.1渭A at 3.3V input.

7. Thermal Management:

   • Monitor the junction temperature to ensure it does not exceed 150掳C.
   • Use a heatsink or other cooling methods if necessary, especially under high load conditions.

8. Operating and Storage Temperature:

   • The device can operate in temperatures ranging from -40掳C to 125掳C.
   • Store the device in temperatures ranging from -65掳C to 150掳C.

9. Layout Considerations:

   • Place the input and output capacitors as close as possible to the respective pins to minimize parasitic inductance.
   • Ensure good PCB layout practices to minimize noise and improve performance.

10. Protection Features:

    • The device includes thermal shutdown and overcurrent protection to prevent damage under fault conditions.

By following these guidelines, you can ensure reliable operation of the MIC2981/82BN in your application.

(For reference only)