Details

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BUY MCP1703AT-3302E/MB https://www.utsource.net/itm/p/7485609.html
Linear Voltage Regulator IC Positive Fixed 1 Output 3.3V 250mA SOT-89-3

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating	1.8		6.5	V
Output Voltage	VOUT	Fixed Output		3.3		V
Output Current	IOUT	Continuous Operation		250		mA
Quiescent Current	IQ	VIN = 6V, VOUT = 3.3V		2.0		μA
Dropout Voltage	VD	IOUT = 150mA		240		mV
Power Supply Rejection	PSRR	f = 120Hz		70		dB
Temperature Range	Toper	Operating	-40		85	°C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the operating range of 1.8V to 6.5V.

2. Output Voltage (VOUT):

   • The MCP1703AT-3302E/MB provides a fixed output voltage of 3.3V. No external components are required for setting this voltage.

3. Output Current (IOUT):

   • The device can supply up to 250mA continuously. Ensure that the load does not exceed this limit to avoid overheating or damage.

4. Quiescent Current (IQ):

   • The quiescent current is very low at 2.0μA under typical conditions, making it suitable for battery-powered applications.

5. Dropout Voltage (VD):

   • To maintain regulation, ensure that the input voltage is at least 240mV higher than the output voltage when supplying 150mA.

6. Power Supply Rejection Ratio (PSRR):

   • The device has a high PSRR of 70dB at 120Hz, which helps in filtering out ripple and noise from the input power supply.

7. Operating Temperature (Toper):

   • The device operates reliably over a temperature range from -40°C to +85°C.

8. Capacitors:

   • Use appropriate input and output capacitors as specified in the datasheet to ensure stability and performance. Typically, a 1μF ceramic capacitor on both input and output is recommended.

9. PCB Layout:

   • Keep the PCB layout compact with short traces to minimize parasitic inductance and resistance. Place the input and output capacitors close to the regulator pins.

10. Thermal Considerations:

    • Ensure adequate heat dissipation if operating near the maximum current or in environments approaching the upper temperature limit.

(For reference only)