Details

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BUY MC33063ADTR(XBLW)(5pcs) https://www.utsource.net/itm/p/12598105.html

Parameter	Description	Value	Unit
Supply Voltage (Vcc)	Operating voltage range	2.7 to 40	V
Output Voltage (Vo)	Adjustable output voltage range	1.24 to 40	V
Maximum Output Current (Iout)	Continuous output current	1.5	A
Switching Frequency (fsw)	Internal oscillator frequency	100	kHz
Duty Cycle	Range of duty cycle	0 to 90	%
Shutdown Current (Isd)	Quiescent current in shutdown mode	0.1	μA
Operating Temperature (Tamb)	Ambient operating temperature range	-40 to 125	°C
Storage Temperature (Tstg)	Storage temperature range	-65 to 150	°C
Package Type	Type of package	DIP-8 or SOIC-8	-
Pin Count	Number of pins	8	-

Instructions for Using MC33063ADTR(XBLW)(5pcs):

1. Supply Voltage Connection:

   • Connect the input supply voltage (Vcc) to pin 1.
   • Ground (GND) should be connected to pin 8.

2. Output Voltage Configuration:

   • The output voltage (Vo) can be adjusted using an external resistor network connected between pins 2, 3, and 4.
   • Use the formula ( V_ = 1.24 left(1 + fracright) ) to set the desired output voltage, where R1 is connected between pin 2 and 3, and R2 is connected between pin 3 and 4.

3. Inductor Selection:

   • Choose an inductor with a value that ensures stable operation at the desired output current and switching frequency.
   • Typically, an inductor in the range of 100 μH to 1 mH is used.

4. Capacitor Selection:

   • Use a high-quality ceramic or tantalum capacitor for the input (Cin) and output (Cout) capacitors.
   • Typical values are 10 μF for Cin and 10 μF to 100 μF for Cout.

5. Diode Selection:

   • Use a fast-recovery diode to handle the reverse voltage and current spikes.
   • A Schottky diode is recommended for its low forward voltage drop.

6. Shutdown Function:

   • To enable the shutdown function, connect a control signal to pin 5.
   • When the control signal is high, the device is active; when low, the device is in shutdown mode.

7. Thermal Considerations:

   • Ensure proper heat dissipation by providing adequate PCB copper area or a heatsink if necessary.
   • Avoid operating the device at temperatures exceeding the maximum ambient temperature.

8. Layout Recommendations:

   • Keep the traces between the inductor, diode, and capacitors as short as possible to minimize parasitic inductance and resistance.
   • Place the input and output capacitors close to the respective pins to reduce noise.

9. Testing:

   • Before finalizing the design, test the circuit under various load conditions to ensure stability and efficiency.
   • Monitor the output voltage and current to verify that they meet the design specifications.

10. Storage and Handling:

    • Store the MC33063ADTR in a dry environment to prevent moisture damage.
    • Handle the device with care to avoid static discharge, which can damage the internal components.

(For reference only)