Details

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BUY LTM455GW https://www.utsource.net/itm/p/12606913.html

Parameter	Symbol	Min	Typical	Max	Unit	Description
Input Voltage	VIN	2.7	-	5.5	V	Input supply voltage range
Output Voltage	VOUT	0.6	-	1.8	V	Adjustable output voltage
Output Current	IOUT	-	5	5	A	Maximum continuous output current
Efficiency	η	-	90	-	%	Typical efficiency at nominal conditions
Switching Frequency	fSW	-	1.5	-	MHz	Fixed switching frequency
Quiescent Current	IQ	-	300	-	μA	Quiescent current at no load
Load Transient Response	ΔVOUT	-	±50	-	mV	Output voltage deviation during load transient
Operating Temperature	TOPR	-40	-	125	°C	Operating temperature range
Storage Temperature	TSTG	-65	-	150	°C	Storage temperature range
Package Type	-	-	-	-	LGA-12	Land Grid Array package with 12 contacts

Instructions for Using LTM455GW

1. Input Voltage Connection:

   • Connect the input voltage (VIN) to the designated pin. Ensure the input voltage is within the specified range (2.7V to 5.5V).

2. Output Voltage Configuration:

   • Set the output voltage (VOUT) using the external resistor divider network connected to the FB (feedback) pin. Refer to the datasheet for specific resistor values.

3. Output Capacitor:

   • Place a low ESR ceramic capacitor close to the VOUT pin to ensure stable operation and good transient response.

4. Ground Connection:

   • Ensure a solid ground connection by connecting the GND pins to the system ground plane. Use wide, short traces to minimize inductance.

5. Thermal Management:

   • The LTM455GW has an exposed thermal pad. Attach this pad to a heat sink or a large copper area on the PCB to improve thermal performance.

6. Layout Considerations:

   • Follow good layout practices to minimize noise and parasitic effects. Keep high current paths short and direct, and use ground planes to reduce inductance.

7. Power-Up Sequence:

   • Ensure that the input voltage rises monotonically and does not drop below the undervoltage lockout threshold during power-up.

8. Protection Features:

   • The LTM455GW includes overcurrent protection and thermal shutdown. These features will automatically protect the device under fault conditions.

9. Testing and Debugging:

   • After assembly, test the output voltage and current under various load conditions to ensure the device is functioning correctly. Use an oscilloscope to monitor the output ripple and transient response.

10. Storage and Handling:

    • Store the LTM455GW in a dry, static-protected environment. Handle the device with care to avoid damage to the sensitive components.

For detailed specifications and additional information, refer to the official datasheet provided by the manufacturer.

(For reference only)