Details

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BUY LM2642MTC https://www.utsource.net/itm/p/11250720.html

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Input Voltage	VIN	3.0	-	5.5	V
Output Voltage	VOUT	1.2	-	5.0	V	Adjustable
Output Current	IOUT	-	1.0	1.5	A	Continuous
Efficiency (Typical)	η	-	85	-	%	At 3.3V in, 1.8V out, 1A load
Switching Frequency	fSW	1.0	-	2.0	MHz	Fixed
Quiescent Current	IQ	-	30	-	μA	Shutdown mode: <1μA
Dropout Voltage	VDROPOUT	-	200	-	mV	At 1.5A, 5V to 3.3V conversion
Operating Temperature Range	TOPR	-40	-	125	°C	Junction temperature
Storage Temperature Range	TSTG	-65	-	150	°C
Package Type		-	MTC	-	-	8-pin MSOP

Instructions for Use

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 3.0V to 5.5V.
   • Use appropriate input capacitors to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted using external resistors.
   • Refer to the datasheet for the specific resistor values needed to set the desired output voltage.

3. Output Current (IOUT):

   • The device can provide up to 1.5A of continuous output current.
   • Ensure proper heat dissipation if operating at high currents.

4. Efficiency (η):

   • The typical efficiency is 85% under standard conditions.
   • Efficiency can vary based on input and output voltages, as well as load current.

5. Switching Frequency (fSW):

   • The switching frequency is fixed between 1.0 MHz and 2.0 MHz.
   • This helps in reducing the size of external components like inductors and capacitors.

6. Quiescent Current (IQ):

   • The quiescent current is typically 30 μA.
   • In shutdown mode, the quiescent current drops to less than 1 μA.

7. Dropout Voltage (VDROPOUT):

   • The dropout voltage is typically 200 mV at 1.5A load when converting from 5V to 3.3V.
   • Ensure the input voltage is sufficiently higher than the output voltage to avoid dropout.

8. Operating Temperature Range (TOPR):

   • The device operates reliably from -40°C to 125°C junction temperature.
   • Monitor the temperature to prevent overheating, especially under high load conditions.

9. Storage Temperature Range (TSTG):

   • Store the device in an environment with temperatures ranging from -65°C to 150°C.

10. Package Type:

    • The LM2642MTC is packaged in an 8-pin MSOP.
    • Ensure proper handling and soldering techniques to avoid damage to the device.

Additional Notes:

• Always refer to the latest datasheet for detailed information and specific application notes.
• Use appropriate PCB layout guidelines to ensure optimal performance and reliability.

(For reference only)