Specification	FAN5354MPX

Current - Output	3 A
Frequency - Switching	3 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	12-WFDFN Exposed Pad
Supplier Device Package	12-MLP (3.5x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	2 V
Voltage - Output (Min/Fixed)	0.8 V

FAN5354 Series

3Mhz, 3A Synchronous Buck Regulator

Part	Synchronous Rectifier	Topology	Frequency - Switching	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Output Configuration	Current - Output	Output Type	Package / Case	Supplier Device Package	Voltage - Output (Min/Fixed)	Voltage - Output (Max) [Max]	Function	Mounting Type	Voltage - Input (Min) [Min]	Number of Outputs
ON Semiconductor FAN5354MPX		Buck	3 MHz	85 °C	-40 °C	5.5 V	Positive	3 A	Adjustable	12-WFDFN Exposed Pad	12-MLP (3.5x3)	0.8 V	2 V	Step-Down	Surface Mount	2.7 V	1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

FAN5354 Series

The FAN5354 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2.7V to 5.5V. Using a proprietary architecture with synchronous rectification, the FAN5354 is capable of delivering 3A at over 85% efficiency, while maintaining a very high efficiency of over 80% at load currents as low as 2mA. The regulator operates at a nominal fixed frequency of 3MHz, which reduces the value of the external components to 470nH for the output inductor and 10µF for the output capacitor. Additional output capacitance can be added to improve regulation during load transients without affecting stability and inductance up to 1.2µH may be used with additional output capacitance.At moderate and light loads, pulse frequency modulation (PFM) is used to operate the device in power-save mode with a typical quiescent current of 270µA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 3MHz. In shutdown mode, the supply current drops below 1µA, reducing power consumption. PFM mode can be disabled if constant frequency is desired. To avoid audible noise, the regulator limits its minimum PFM frequency. The FAN5354 is available in 12-lead 3x3.5mm MLP package.