PWM Control 2A Step-Down Converter

RS6513 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced from 350KHz to 30KHz. Also, an internal compensation block is built in to minimum external component count.

FEATUREs
• Input voltage: 3.6V to 18V.
• Output voltage: 0.8V to VCC.
• Duty ratio: 0% to 100% PWM control
• Oscillation frequency: 350KHz typ.
• Soft-start, Current limit, Enable function
• Thermal Shutdown function
• Built-in internal SW P-channel MOS
• SOP-8L Pb-Free Package.

APPLICATIONs
• PC Motherboard
• LCD Monitor
• Graphic Card
• DVD-Video Player
• Telecom Equipment
• ADSL Modem
• Printer and other Peripheral Equipment
• Microprocessor core supply
• Networking power supply