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FAN53541 Datasheet

Part Number FAN53541
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Synchronous Buck Regulator
Datasheet FAN53541 DatasheetFAN53541 Datasheet (PDF)

FAN53541 — 2.4MHz, 5A TinyBuck™ Synchronous Buck Regulator February 2014 FAN53541 2.4 MHz, 5 A TinyBuck™ Synchronous Buck Regulator Features  2.4 MHz Fixed-Frequency Operation  Best-in-Class Load Transient Response  5 A Output Current Capability  2.7 V to 5.5 V Input Voltage Range  Adjustable Output Voltage: 0.8 V to 90% of VIN  PFM Mode for High Efficiency in Light Load (Forced PWM Available on MODE Pin)  50 µA Typical Quiescent Current in PFM Mode  External Frequency Synchronization.

  FAN53541   FAN53541






Part Number FAN53540
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Synchronous Buck Regulator
Datasheet FAN53541 DatasheetFAN53540 Datasheet (PDF)

FAN53540 — 2.4 MHz, 5 A TinyBuck™ Synchronous Buck Regulator July 2014 FAN53540 2.4 MHz, 5 A TinyBuck™ Synchronous Buck Regulator Features  2.4 MHz Fixed-Frequency Operation  Best-in-Class Load Transient Response  5 A Output Current Capability  2.7 V to 5.5 V Input Voltage Range  Adjustable Output Voltage: 0.8V to 90% of VIN  PFM Mode for High Efficiency in Light Load (Forced PWM Available on MODE Pin)  50 µA Typical Quiescent Current in PFM Mode  External Frequency Synchronization  .

  FAN53541   FAN53541







Synchronous Buck Regulator

FAN53541 — 2.4MHz, 5A TinyBuck™ Synchronous Buck Regulator February 2014 FAN53541 2.4 MHz, 5 A TinyBuck™ Synchronous Buck Regulator Features  2.4 MHz Fixed-Frequency Operation  Best-in-Class Load Transient Response  5 A Output Current Capability  2.7 V to 5.5 V Input Voltage Range  Adjustable Output Voltage: 0.8 V to 90% of VIN  PFM Mode for High Efficiency in Light Load (Forced PWM Available on MODE Pin)  50 µA Typical Quiescent Current in PFM Mode  External Frequency Synchronization  Low Ripple Light-Load PFM Mode with Forced PWM Control  Power Good Output  Internal Soft-Start  Input Under-Voltage Lockout (UVLO)  Thermal Shutdown and Overload Protection  No External Compensation Required  20-Bump WLCSP Applications  Set-Top Box  Hard Disk Drive  Communications Cards  DSP Power Description The FAN53541 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2.7 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN53541 is capable of delivering 5 A at over 90% efficiency, while maintaining a very high efficiency of over 80% at load currents as low as 2 mA. The regulator operates at a nominal fixed frequency of 2.4 MHz, which reduces the value of the external components to 470 nH for the output inductor and 20 µF for the output capacitor. Additional output capacitance can be added to improve regulation during load transients without affecting stability and inductance up .


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