RT2852BH Datasheet | Richtek

® 3A, 18V, Synchronous Step-Down Converter General Description The RT2852BH is a high efficiency, monolithic synchronous step-down DC-DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply. The RT2852BH current-mode architecture with external pensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Fault condition protections include output under-voltage protection, output over-voltage protection, and over-temperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. Applications - High Performance Point of Load Regulation - Notebook puters - High Density and Distributed Power Systems Features - Low RDS(ON) Power MOSFET Switches 46mΩ/36mΩ - Input Voltage Range : 4.5V to 18V - Adjustable Switching Frequency : 200k Hz to 1.2MHz - Current-Mode Control - Synchronous to External Clock : 200k Hz to 1.2MHz - Accurate Voltage Reference 0.8V ± 1.25%, Over - 40°C to 105°C - Monotonic Start-Up into Pre-biased Outputs - Adjustable Soft-Start - Power Good Indicator - Under-Voltage and Over-Voltage Protection - Input Under-Voltage Lockout Ordering Information Package Type QW : WQFN-14AL 3.5x3.5 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are :  Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in Sn Pb or Pb-free soldering processes. Simplified Application Circuit Enable PGOOD ROSC...