The RT8251GQW is a monolithic step-down switch mode converter with a built-in internal power MOSFET. It achieves 5A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization.The RT8251GQW provides protection functions such as cycle-by-cycle current limiting and thermal shutdown. In shutdown mode, the regulator draws 25μA of supply current. Programmable soft-start minimizes the inrush supply current and the output overshoot at initial startup. The RT8251GQW requires a minimum number of external components. The RT8251GQW is available in WQFN-16L 3x3 and SOP-8 (Exposed Pad) packages.
Feature
- Wide Operating Input Voltage Range : 4.75V to 24V
- Adjustable Output Voltage Range : 0.8V to 15V
- Output Current up to 5A
- 25μA Low Shutdown Current
- Internal Power MOSFET : 70mΩ
- High Efficiency up to 95%
- 570kHz Fixed Switching Frequency
- Stable with Low ESR Output Ceramic Capacitors
- Thermal Shutdown Protection
- Cycle-By-Cycle Over Current Protection
- RoHS Compliant and Halogen Free
Applications
- Distributed Power Systems
- Battery Charger
- DSL Modems
- Pre-regulator for Linear Regulators
