The RT7243GQW is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT7243GQW current-mode architecture with external compensation 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.
Feature
- Low RDS(ON) Power MOSFET Switches 26mΩ/19mΩ
- Input Voltage Range : 4.5V to 18V
- Adjustable Switching Frequency : 200kHz to 1.6MHz
- Current-Mode Control
- Synchronous to External Clock : 200kHz to 1.6MHz
- Accurate Voltage Reference 0.8V ± 1.25%
- Monotonic Start-Up into Pre-biased Outputs
- Adjustable Soft-Start
- Power Good Indicator
- Under-Voltage and Over-Voltage Protection
- Input Under-Voltage Lockout
- RoHS Compliant and Halogen Free
Applications
- High Performance Point of Load Regulation
- Notebook Computers
- High Density and Distributed Power Systems
