FAN4603 − 6MHz, 600mA Synchronous Buck Regulator

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Obsolete as of 10-Jun-2013

The FAN4603 is a fully integrated synchronous DC/DC buck converter that provides up to 600mA 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.

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Product Status/Packaging

Product Product & Eco Status Replacement Part Number Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
2 FAN4603MM13X Obsolete as of 11-Dec-2012
Green as of Jul 2010
 Details
1.1 x 2.5 x 4mm
TAPE REEL

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code) &K
Line 2:4603 13
ESD (CDM) :  2000  V
ESD (HBM) :  6000  V
Moisture Sensitivity Level (MSL) :  1  
Show more...
2 FAN4603MM12X Obsolete as of 11-Dec-2012
Green as of Jul 2010
 Details
1.1 x 2.5 x 4mm
TAPE REEL

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code) &K
Line 2:4603 12
ESD (CDM) :  2000  V
ESD (HBM) :  6000  V
Moisture Sensitivity Level (MSL) :  1  
Show more...
2 FAN4603MM10X Obsolete as of 11-Dec-2012
Green as of Jul 2010
 Details
1.1 x 2.5 x 4mm
TAPE REEL

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code) &K
Line 2:4603 10
ESD (CDM) :  2000  V
ESD (HBM) :  6000  V
Moisture Sensitivity Level (MSL) :  1  
Show more...
2 FAN4603MM15X Obsolete as of 11-Dec-2012
Green as of Jul 2010
 Details
1.1 x 2.5 x 4mm
TAPE REEL

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code) &K
Line 2:4603 15
ESD (CDM) :  2000  V
ESD (HBM) :  6000  V
Moisture Sensitivity Level (MSL) :  1  
Show more...
2 FAN4603MM18X Obsolete as of 10-Jun-2013
Green as of Oct 2009
 Details
1.1 x 2.5 x 4mm
TAPE REEL

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code) &K
Line 2:4603 18
ESD (CDM) :  2000  V
ESD (HBM) :  6000  V
Moisture Sensitivity Level (MSL) :  1  
Show more...

Features

  • 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


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