Details

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BUY LMR33630ADDA https://www.utsource.net/itm/p/12611661.html

Parameter	Description	Min	Typ	Max	Unit
Input Voltage (VIN)	Operating input voltage range	4.5	-	60	V
Output Voltage (VOUT)	Fixed output voltage	-	3.3	-	V
Output Current (IOUT)	Continuous output current	-	3	-	A
Quiescent Current (IQ)	Supply current at no load	-	12	-	渭A
Efficiency (畏)	Typical efficiency at full load	-	94	-	%
Dropout Voltage (VDROP)	Dropout voltage at full load	-	400	-	mV
Switching Frequency (FSW)	Switching frequency	-	2.1	-	MHz
Package	Device package type	-	-	-	DDA-8
Operating Temperature (TOPR)	Operating junction temperature range	-40	-	125	掳C
Storage Temperature (TSTG)	Storage temperature range	-65	-	150	掳C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 4.5V to 60V.
   • Use appropriate input filtering capacitors to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The LMR33630ADDA provides a fixed output voltage of 3.3V. No external resistors are required for voltage setting.

3. Output Current (IOUT):

   • The device can provide a continuous output current of up to 3A. Ensure adequate heat dissipation if operating at high currents.

4. Quiescent Current (IQ):

   • The quiescent current is typically 12渭A, which helps in maintaining low power consumption during no-load conditions.

5. Efficiency (畏):

   • The typical efficiency at full load is 94%. Optimize the design to achieve this efficiency by using low ESR output capacitors.

6. Dropout Voltage (VDROP):

   • The dropout voltage at full load is typically 400mV. Ensure that the input voltage is at least 400mV higher than the output voltage to maintain regulation.

7. Switching Frequency (FSW):

   • The switching frequency is fixed at 2.1MHz. This high frequency allows for smaller external components.

8. Package:

   • The LMR33630ADDA is available in a DDA-8 package. Follow the recommended PCB layout guidelines for optimal thermal performance.

9. Operating Temperature (TOPR):

   • The operating junction temperature range is from -40掳C to 125掳C. Ensure proper cooling or heat sinking if operating in high-temperature environments.

10. Storage Temperature (TSTG):

    • Store the device in a temperature range of -65掳C to 150掳C to prevent damage.

Additional Notes:

• PCB Layout: Proper PCB layout is crucial for thermal management and electromagnetic interference (EMI) reduction. Follow the recommended layout guidelines provided in the datasheet.
• Capacitors: Use high-quality, low ESR capacitors for both input and output filtering to ensure stable operation and minimize ripple.
• Inductor Selection: Choose an inductor with the appropriate inductance and current rating to match the switching frequency and output current requirements.

(For reference only)