Details

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Parameter	Description	Value
Part Number		NB671GQ-Z
Function	DC-DC Converter
Input Voltage (VIN)	Minimum Input Voltage	4.5V
	Maximum Input Voltage	28V
Output Voltage (VOUT)	Fixed Output Voltage	3.3V, 5V, 12V
	Adjustable Output Voltage Range	0.9V to 28V
Output Current (IOUT)	Continuous Output Current	1A
Switching Frequency	Fixed Switching Frequency	1.2MHz
Efficiency	Typical Efficiency at 5V/1A	90%
Package Type		SOIC-8
Operating Temperature	Minimum Operating Temperature	-40掳C
	Maximum Operating Temperature	+85掳C
Storage Temperature	Minimum Storage Temperature	-65掳C
	Maximum Storage Temperature	+150掳C
Protection Features	Overcurrent Protection	Yes
	Overtemperature Protection	Yes
	Undervoltage Lockout	Yes
Pin Configuration	Pin 1: VIN
	Pin 2: GND
	Pin 3: FB (Feedback)
	Pin 4: EN (Enable)
	Pin 5: PG (Power Good)
	Pin 6: VOUT
	Pin 7: NC (No Connect)
	Pin 8: NC (No Connect)

Instructions for Use

1. Power Supply Connection:

   • Connect the input voltage (VIN) to Pin 1.
   • Connect the ground (GND) to Pin 2.

2. Output Configuration:

   • For fixed output voltages (3.3V, 5V, 12V), no external components are required.
   • For adjustable output voltage, connect a voltage divider between VOUT and GND, and connect the midpoint to Pin 3 (FB).

3. Enable Control:

   • To enable the converter, apply a high signal (VIN or higher) to Pin 4 (EN).
   • To disable the converter, apply a low signal (GND) to Pin 4 (EN).

4. Power Good Monitoring:

   • Pin 5 (PG) provides a logic high signal when the output voltage is within the regulation range.

5. Thermal Management:

   • Ensure adequate heat dissipation by providing a heatsink or using a PCB with sufficient copper area for thermal management.

6. Protection:

   • The device includes overcurrent, overtemperature, and undervoltage lockout protection. These features will automatically shut down the converter if any fault condition is detected.

7. Storage and Handling:

   • Store the device in a dry, cool environment within the specified storage temperature range.
   • Handle the device with care to avoid damage to the pins and package.

8. Testing:

   • Before finalizing the design, test the converter under various operating conditions to ensure it meets the required performance specifications.

For detailed application notes and further information, refer to the datasheet provided by the manufacturer.

(For reference only)