FAN2356 − TinyBuck™ 6 A Integrated Synchronous Buck Regulator

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The FAN2356 TinyBuck™ is a highly efficient integrated synchronous buck regulator. The regulator is capable of operating with an input range from 4.5 V to 24 V and supporting up to 6 A continuous load currents.

The FAN2356 utilizes Fairchild’s constant on-time control architecture to provide excellent transient response and to maintain a relatively constant switching frequency. This device utilizes Pulse Frequency Modulation (PFM) mode to maximize light-load efficiency by reducing switching frequency when the inductor is operating in discontinuous conduction mode at light loads, while clamping the minimum frequency above the audible range with ultrasonic mode.

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. After thermal shutdown is activated, a hysteresis feature restarts the device when normal operating temperature is reached.

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Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 FAN2356MPX Full Production
Green as of Mar 2012
$1.41  Details
1.1 x 5.5 x 5.0mm
TAPE REEL

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&3 (3-Digit Date Code)
&K
Line 2:FAN23
Line 3:56
ESD (CDM) :  2500  V
ESD (HBM) :  2000  V
RƟJA :  35  °C/W
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Features

  • VIN Range: 4.5 V to 24 V
  • High Efficiency: Over to 96% Peak
  • Continuous Output Current: 6 A
  • PFM Mode for Light-Load Efficiency
  • Excellent Line and Load Transient Response
  • Precision Reference: ±1% Over Temperature
  • Output Voltage Range: 0.6 to 5.5 V
  • Programmable Frequency: 200 kHz to 1.5 MHz
  • Programmable Soft-Start
  • Low Shutdown Current
  • Adjustable Sourcing Current Limit
  • Internal Boot Diode
  • Thermal Shutdown
  • Halogen and Lead Free, RoHS Compliant

Applications

  • Game Console
  • Desktop PC
  • Storage & Peripherals
  • Video Game Console
  • Workstation
  • Set Top Boxes
  • Server & Mainframe
  • Routers & LAN Switches
  • PC Server
  • Other Industrial
  • Other Data Processing
  • Other Consumer Electronics
  • DVD/Set Top Boxes
  • Consumer
  • Broadband Access

Application Notes

Design Tools

Design Tool Design Tool
Synchronous Buck Regulator - TinyBuck™ Online Simulation Tool for TinyBuck Family (FAN23xx Devices)
ODT-00026 Online Simulation Tool for TinyBuck Family (FAN23xx Devices)


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