Details

---

BUY LM3409HVMYX/NOPB https://www.utsource.net/itm/p/12605924.html

Parameter	Symbol	Test Conditions	Min	Typ	Max	Unit
Input Voltage	VIN		5.5		60	V
Output Voltage	VOUT			3.3		V
Switching Frequency	fSW		200	700	1000	kHz
Peak Inductor Current Limit	ILIM	VIN = 12V, VOUT = 3.3V		1.9		A
Soft-Start Time	tSS			4		ms
Enable Threshold (High)	VEN(H)	Rising		1.23		V
Enable Threshold (Low)	VEN(L)	Falling		0.8		V
UVLO Threshold (Typical)	VUVLO			3.2		V
Thermal Shutdown Temp	TSD			160		掳C

Instructions for LM3409HVMYX/NOPB:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 5.5V to 60V. Exceeding this range can damage the device.

2. Output Voltage (VOUT):

   • The typical output voltage is set at 3.3V. Adjust external components if a different output voltage is required.

3. Switching Frequency (fSW):

   • Set the switching frequency between 200kHz and 1000kHz using an external resistor. Higher frequencies reduce the size of external components but increase switching losses.

4. Peak Inductor Current Limit (ILIM):

   • Monitor the peak inductor current limit, typically set at 1.9A, to prevent overcurrent conditions that could lead to component failure.

5. Soft-Start Time (tSS):

   • The soft-start time is typically 4ms. This feature gradually increases the output voltage to prevent inrush currents during startup.

6. Enable Control:

   • Use the enable pin to control the operation of the regulator. The enable threshold is 1.23V rising and 0.8V falling.

7. Under-Voltage Lockout (UVLO):

   • The UVLO feature ensures the regulator remains off until the input voltage exceeds the typical threshold of 3.2V.

8. Thermal Shutdown:

   • The regulator will automatically shut down if the junction temperature exceeds approximately 160掳C to protect against overheating.

For detailed design considerations and specific application circuits, refer to the datasheet provided by the manufacturer.

(For reference only)