The ON Semiconductor FAN251040 is a highly efficient synchronous buck regulator with digital interface, capable of operating with an input range from 4.5 V to 18 V and supporting up to 40 A load currents. The FAN2510xx utilizes a fixed−frequency voltage−mode control architecture to provide a synchronized constant switching frequency while ensuring fast transient response. Switching frequency and over−current protection can be programmed to provide a flexible solution for various applications. Output over−voltage, under−voltage, over−current, and thermal shutdown protections help prevent damage to the device during fault conditions.

PMBUS 1.3.1 Compatible
Telemetry reporting, custom configuration, fault recording/reading with NVM
VIN Range: 4.5 V to 18 V
Accurate Voltage, Current and Thermal Telemetry Reporting
High Efficiency: Over 96% Peak
Continuous Output Current: 40 A
Internal Linear Bias Regulator
Precision Reference: ±0.7% Over Temperature
Output Voltage Range: 0.5 V to 5.5 V
Adjustable Frequency: 200 kHz to 1.4 MHz
Programmable Soft−Start
Low Shutdown Current
Internal Boot Diode
Thermal Shutdown
Pb−Free, Halogen Free/BFR Free, and is RoHS Compliant

Units	Per unit
10 - 99	£4.34
100 - 499	£3.77
500 - 999	£3.31
1000 +	£3.01

Select all	Attribute	Value
	Brand	onsemi
	Minimum Output Voltage	0.5 V
	Maximum Output Voltage	5 V
	Minimum Input Voltage	4.5 V
	Maximum Input Voltage	18 V
	Minimum Output Current	40A
	Converter Type	Synchronous Buck
	Package Type	WQFN
	Pin Count	34

	Select all
	Brand onsemi
	Minimum Output Voltage 0.5 V
	Maximum Output Voltage 5 V
	Minimum Input Voltage 4.5 V
	Maximum Input Voltage 18 V
	Minimum Output Current 40A
	Converter Type Synchronous Buck
	Package Type WQFN
	Pin Count 34

onsemi FAN251040MNTXG, Synchronous Buck DC-DC Converter, 40A 34-Pin, WQFN

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