Dual Regulators are suited for graphics cards and PCs.

Press Release Summary:



Supplied in 14-pin package, RT9205/A RoHS-compliant dual-output power controllers integrate synchronous buck controller, linear controller, and protection functions. Internally compensated voltage mode PWM control simplifies design, and internal 0.8 V reference enables precise regulation of output voltage. Also, fixed 300 kHz oscillation frequency reduces component size for conserving board space. Other features dynamic 0-100% duty cycle.



Original Press Release:



RT9205/RT9205A : Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller



General Description

The RT9205/A is a dual-output power controllers designed for high performance graphics cards and personal computers. The IC integrates a synchronous buck controller, a linear controller and protection functions into a small 14-pin package.

The RT9205/A uses an internal compensated voltage mode PWM control for simplying design. An internal 0.8V reference allows the output voltage to be precisely regulated to meet low output voltage requirement. A fixed 300kHz oscillation frequency reduces the component size for saving board area.

The RT9205/A also features over voltage protection (OVP) and under voltage lock-out (UVLO).

Features

  • Operates at 5V
  • 0.8V Internal Reference
  • Drives Two N-MOSFET
  • Voltage Mode PWM Control
  • Fast Transient Response
  • Fixed 300kHz Oscillator Frequency
  • Dynamic 0 to 100% Duty Cycle
  • Internal PWM Loop Compensation
  • Internal Soft-Start
  • Adaptive Non-Overlapping Gate Driver
  • Over-Voltage Protection Uses Lower MOSFET
  • RoHS Compliant and 100% Lead (Pb)-Free

    Application

  • PC Motherboard
  • Cable Modems, Set-Top-Box, and XDSL Modems
  • DSP and Core Communications Processor Supplies
  • Memory Power Supplies
  • Personal Computer Peripherals
  • Industrial Power Supplies
  • 5V Input DC-DC Regulators
  • Low Voltage Distributed Power Supplies
  • Graphic Cards
  • All Topics