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FAN4603

Fairchild Semiconductor
Part Number FAN4603
Manufacturer Fairchild Semiconductor
Description 500mA Synchronous Buck Regulator
Published Jul 14, 2010
Detailed Description FAN4603 — 500mA, Fully Integrated Buck Power Supply Module www.DataSheet4U.com April 2010 FAN4603 500mA, Fully Integr...
Datasheet PDF File FAN4603 PDF File

FAN4603
FAN4603

Overview
FAN4603 — 500mA, Fully Integrated Buck Power Supply Module www.
DataSheet4U.
com April 2010 FAN4603 500mA, Fully Integrated, Buck Power Supply Module Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Solder and Play DC/DC Converter; No External Components Required Up to 91% Efficiency 500mA Output Current Capability 2.
3V to 5.
5V Input Voltage Range Fixed Output Voltages from 1.
2V to 1.
8V 35µA PFM Quiescent Current Best-in-Class Load and Line Transient Response ±4% PWM DC Voltage Accuracy No External Components Required High-Efficiency, Low-Ripple, Light-Load PFM Thermal Shutdown (TSD), Under-Voltage Lockout, (UVLO), and Short-Circuit (SCP) Protection 4.
0 x 2.
5mm MLP Package Maximum Height: 1.
1mm Description The FAN4603 is a fully integrated synchronous DC/DC buck converter that provides up to 500mA of output current over an input voltage ranging from 2.
3V to 5.
5V.
It provides a fixed output voltage level ranging from 1.
2V to 1.
8V.
Other voltage options are available on request.
The FAN4603 converter is offered as an ultra-miniature “Solder and Play” solution that requires no external components and is able to achieve a DC accuracy of ±4% PWM and an output ripple less than 12mV.
Total footprint is 4.
0 x 2.
5mm with a maximum height of 1mm.
It can be used in small battery-powered devices and applications with distributed DC POL requirements.
At moderate and light loads, pulse frequency modulation is used to operate the device in power-save mode with a typical quiescent current of 35µA.
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.
In shutdown mode, the supply current drops below 2µA, reducing power consumption.
Applications ƒ ƒ ƒ ƒ POL and Distributed DC-DC Module Applications Small Form Factor, Battery-Powered Applications POL Core Power for FPGA, DSP, CPU, and GPU with Fast-Transient, Wide Dynamic Load Requirements Wireless Cards, Mete...


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