Details

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BUY MC33063 https://www.utsource.net/itm/p/12611171.html

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Input Voltage	VIN	2.7	-	40	V
Output Voltage	VOUT	-	-	40	V	Adjustable
Switching Frequency	fSW	-	100	-	kHz
Output Current (Continuous)	IOUT	-	1.5	-	A
Quiescent Current	IQ	-	1	-	mA
Shutdown Current	ISD	-	0.1	-	渭A
Thermal Shutdown	TSD	-	160	-	掳C
Storage Temperature	TSTG	-40	-	150	掳C
Operating Junction Temperature	TJ	-40	-	150	掳C

Instructions for Using the MC33063:

1. Input Voltage (V_IN):

   • The input voltage range is from 2.7V to 40V. Ensure the input voltage is within this range to avoid damage to the device.

2. Output Voltage (V_OUT):

   • The output voltage can be adjusted using external components. The typical configuration involves a feedback resistor network to set the desired output voltage.

3. Switching Frequency (f_SW):

   • The switching frequency is typically 100kHz. This can be adjusted by changing the value of the timing capacitor (C_T).

4. Output Current (I_OUT):

   • The maximum continuous output current is 1.5A. Ensure that the load does not exceed this limit to prevent overheating and potential damage.

5. Quiescent Current (I_Q):

   • The quiescent current is typically 1mA. This is the current consumed by the IC when it is active but not driving any load.

6. Shutdown Current (I_SD):

   • When the shutdown pin is activated, the IC consumes only 0.1渭A. This feature is useful for power-saving applications.

7. Thermal Shutdown (T_SD):

   • The IC will shut down if the junction temperature exceeds 160掳C to prevent thermal damage. Ensure proper heat dissipation for reliable operation.

8. Storage Temperature (T_STG):

   • The IC can be stored in temperatures ranging from -40掳C to 150掳C. However, ensure it is operated within the operating junction temperature range during use.

9. Operating Junction Temperature (T_J):

   • The operating junction temperature range is from -40掳C to 150掳C. Ensure the device is used within this range to maintain reliability and performance.

Additional Considerations:

• PCB Layout: Proper PCB layout is crucial for thermal management and noise reduction. Keep the power traces short and wide, and use ground planes to reduce noise.
• Component Selection: Choose high-quality external components, especially for the inductor and capacitors, to ensure stable and efficient operation.
• Protection Circuits: Implement appropriate protection circuits, such as overvoltage and overcurrent protection, to safeguard the IC and connected components.

(For reference only)