Details

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BUY NJW0302G/NJW0281G https://www.utsource.net/itm/p/12606370.html

Parameter	NJW0302G	NJW0281G
Supply Voltage (Vcc)	4.5V to 5.5V	4.5V to 5.5V
Output Voltage (Vout)	3.3V 卤1%	3.3V 卤1%
Quiescent Current (Iq)	1.5渭A (typ)	1.5渭A (typ)
Load Current (Iout)	150mA (max)	150mA (max)
Dropout Voltage (Vdo)	0.3V (max) @ 150mA	0.3V (max) @ 150mA
Operating Temperature Range (Tamb)	-40掳C to +85掳C	-40掳C to +85掳C
Storage Temperature Range (Tstg)	-65掳C to +150掳C	-65掳C to +150掳C
Package	SOT-23-3	SOT-23-3

Instructions for Use:

1. Power Supply Connection:

   • Connect the Vcc pin to the input power supply within the specified range (4.5V to 5.5V).
   • Ensure that the power supply is stable and has adequate decoupling capacitors (typically 1渭F ceramic capacitor) placed close to the Vcc pin.

2. Ground Connection:

   • Connect the GND pin to the system ground.
   • Ensure a low-impedance path to ground to minimize noise and improve stability.

3. Output Connection:

   • Connect the Vout pin to the load or circuit requiring the regulated 3.3V supply.
   • Place a 1渭F ceramic capacitor close to the Vout pin to stabilize the output and filter out any high-frequency noise.

4. Thermal Considerations:

   • The devices have a low dropout voltage and low quiescent current, making them suitable for low-power applications.
   • However, if the device is operating at high load currents or in high ambient temperatures, ensure adequate heat dissipation to prevent overheating.

5. Capacitor Selection:

   • Use ceramic capacitors with X7R or X5R dielectric for input and output decoupling.
   • Avoid using electrolytic capacitors as they can degrade over time and affect the stability of the regulator.

6. PCB Layout:

   • Keep the traces between the Vcc, GND, and Vout pins as short as possible to reduce parasitic inductance and improve transient response.
   • Ensure proper grounding and shielding to minimize electromagnetic interference (EMI).

7. Handling:

   • Handle the devices with care to avoid damage from electrostatic discharge (ESD).
   • Follow standard ESD protection procedures during assembly and testing.

8. Testing:

   • Before finalizing the design, test the regulator under various conditions, including different load currents and input voltages, to ensure it meets the required performance specifications.

(For reference only)