Details

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BUY MA5332MS https://www.utsource.net/itm/p/12543136.html

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Input Voltage	V_IN	4.5	-	18	V
Output Voltage	V_OUT	3.3	-	3.3	V	Fixed output voltage
Output Current	I_OUT	-	300	500	mA	Continuous operation
Quiescent Current	I_Q	-	5	10	μA	No load
Dropout Voltage	V_DROPOUT	-	0.3	0.6	V	At 500mA
Efficiency	η	-	90	-	%	At 3.3V, 300mA
Operating Temperature	T_OP	-40	-	85	°C
Storage Temperature	T_STG	-65	-	150	°C
Load Regulation	-	-	0.5	-	%	From 0 to 500mA
Line Regulation	-	-	0.1	-	%/V	From 4.5V to 18V
Ripple Rejection	-	-	70	-	dB	At 1kHz
Start-Up Time	t_STARTUP	-	1	2	ms	From 0V to 90% V_OUT

Instructions for Use:

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 4.5V to 18V.
   • Do not exceed the maximum input voltage to avoid damaging the device.

2. Output Voltage (V_OUT):

   • The MA5332MS provides a fixed output voltage of 3.3V.
   • No external components are required to set the output voltage.

3. Output Current (I_OUT):

   • The device can provide up to 500mA of continuous current.
   • For loads exceeding 500mA, consider using a higher capacity regulator or a heatsink.

4. Quiescent Current (I_Q):

   • The quiescent current is very low, typically around 5μA, which makes it suitable for battery-powered applications.

5. Dropout Voltage (V_DROPOUT):

   • The dropout voltage is the minimum difference between the input and output voltages required for the regulator to maintain regulation.
   • At 500mA, the typical dropout voltage is 0.3V, with a maximum of 0.6V.

6. Efficiency (η):

   • The efficiency of the regulator is typically 90% at 3.3V and 300mA.
   • Higher efficiency reduces power loss and heat generation.

7. Operating Temperature (T_OP):

   • The device can operate within a temperature range of -40°C to 85°C.
   • Avoid operating the device outside this range to prevent damage.

8. Storage Temperature (T_STG):

   • The storage temperature range is -65°C to 150°C.
   • Store the device in a dry environment to prevent moisture damage.

9. Load Regulation:

   • The load regulation is typically 0.5%, indicating that the output voltage will change by 0.5% for a load change from 0 to 500mA.

10. Line Regulation:

    • The line regulation is typically 0.1% per volt, meaning the output voltage will change by 0.1% for each volt change in the input voltage.

11. Ripple Rejection:

    • The ripple rejection is typically 70dB at 1kHz, which helps in filtering out input voltage noise.

12. Start-Up Time (t_STARTUP):

    • The start-up time is the time it takes for the output voltage to reach 90% of its final value after the input voltage is applied.
    • Typically, this time is between 1ms and 2ms.

Additional Considerations:

• Heat Dissipation:
  • For high current applications, ensure adequate heat dissipation to keep the device within its operating temperature range.
• Capacitors:
  • Use appropriate input and output capacitors to stabilize the regulator and filter out noise.
  • Recommended values: 10μF ceramic or tantalum for both input and output.
• PCB Layout:
  • Keep the input and output capacitors close to the regulator to minimize inductance and improve stability.
  • Use wide traces for power lines to reduce resistance and heat generation.

(For reference only)