24V, 3A, 340KHz Synchronous Step-Down DC/DC Converter - AN6484

The AN6484 is a synchronous step-down DC/DC converter that provides wide 4.5V to 24V input voltage range and 3A continuous load current capability. Fault protection includes cycle-by-cycle current limit, input UVLO , output over voltage protection and thermal shutdown. Besides, adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme that provides fast transient response. In shutdown mode, the supply current is about 10uA. The AN6484 is available in an 8-pin SOIC package, provides a very compact system solution and good thermal conductance.

AN6484

Rectified Type

SYNC 1CH

Vin(Min)[V]

4.5

Vin(Max)[V]

24

Vout(Min)[V]

0.923

Vout(Max)[V]

19

Current[A]

3

Freq(Min)[MHz]

Freq(Max)[MHz]

Freq(Typ)[MHz]

0.34

Efficiency[%]

95

Package Type

SOP8-EP
Remark
Ext Comp/ADJ

Features

  • Wide Input Voltage from 4.5V to 24V
  • 3A Output Current
  • Adjustable Output Voltage from 0.92V to 20V
  • 85mΩ integrated Power MOSFET
  • High Efficiency Up to 95%
  • Fixed 340KHz Switching Frequency
  • Current Mode Operation
  • Adjustable Soft-Start
  • Cycle-by-Cycle current limit
  • Input Under Voltage Lockout
  • Over-Temperature Protection
  • Thermal Enhanced SOP-8 Package
  • RoHS Compliant

Application

  • Set-Top-Box
  • DVD
  • LCD Displays
  • OLPC
  • Netbook
  • Distributed Power Systems
  • Datacom
  • XDSL
English