Details

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BUY OB2225NCP https://www.utsource.net/itm/p/12609994.html

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Input Voltage	VIN	2.7	-	5.5	V
Output Voltage	VOUT	1.8	-	3.3	V	Adjustable
Output Current	IOUT	-	2.5	3	A
Quiescent Current	IQ	-	40	60	μA
Dropout Voltage	VDROPOUT	-	200	300	mV	@ IOUT = 3A, VIN = 3.3V, VOUT = 3.3V
Load Regulation	-	-	0.2	0.5	%	0 ≤ IOUT ≤ 3A
Line Regulation	-	-	0.1	0.3	%	2.7V ≤ VIN ≤ 5.5V
Ripple Rejection	-	60	70	80	dB	@ 1kHz
Operating Temperature	TOPR	-40	-	125	°C
Storage Temperature	TSTG	-65	-	150	°C

Instructions for Using OB2225NCP

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Avoid exceeding the maximum input voltage to prevent damage to the device.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted between 1.8V and 3.3V.
   • Use the external resistors R1 and R2 to set the desired output voltage according to the formula: [ V_ = 1.25 left(1 + fracright) ]

3. Output Current (IOUT):

   • The device can deliver up to 3A of output current.
   • For continuous operation at high currents, ensure adequate heat dissipation.

4. Quiescent Current (IQ):

   • The quiescent current is typically around 40μA and can go up to 60μA.
   • This current is drawn by the regulator even when there is no load.

5. Dropout Voltage (VDROPOUT):

   • The dropout voltage is the minimum difference between the input and output voltages required to maintain regulation.
   • At full load (3A), the dropout voltage is typically 200mV and can go up to 300mV.

6. Load Regulation:

   • The load regulation is the change in output voltage due to changes in load current.
   • It is typically 0.2% and can go up to 0.5%.

7. Line Regulation:

   • The line regulation is the change in output voltage due to changes in input voltage.
   • It is typically 0.1% and can go up to 0.3%.

8. Ripple Rejection:

   • The ripple rejection is the ability of the regulator to suppress input voltage variations.
   • It is typically 70dB and can range from 60dB to 80dB at 1kHz.

9. Operating Temperature (TOPR):

   • The device can operate in temperatures ranging from -40°C to 125°C.
   • Ensure that the ambient temperature does not exceed these limits.

10. Storage Temperature (TSTG):

    • The device can be stored in temperatures ranging from -65°C to 150°C.
    • Avoid exposing the device to extreme temperatures for extended periods.

Additional Notes:

• Heat Dissipation: For high current applications, use a heatsink or ensure adequate airflow to keep the device within its operating temperature range.
• Capacitors: Use appropriate input and output capacitors to stabilize the circuit and reduce ripple. Typical values are 10μF for input and 10μF for output.
• PCB Layout: Pay attention to PCB layout to minimize noise and improve thermal performance. Keep the ground plane solid and wide, and place the input and output capacitors close to the regulator.

(For reference only)