RT7271A

® RT7271A 6A, 17V, 500kHz CSP Synchronous Step-Down Converter General Description The RT7271A is a high efficiency, synchronous step-down DC/DC converter for applications operating from 4.5V to 17V and requiring up to 6A maximum load. The current mode architecture of RT7271A allows the transient response to be optimized. Cycle-by-cycle current limit provides protection against shorted output and soft-start eliminates input current surge during start-up. Fault conditions also include output under voltage protection, output over voltage protection, and thermal shutdown. The low current shutdown mode provides output disconnect, enabling easy power management in battery powered systems. Features z z z z z z z z 4.5V to 17V Input Voltage Range 6A Output Current Current Mode Control 0.6V ± 1% Voltage Reference Over Temperature Latch Off when Short Circuit Monotonic Start-Up in Pre-biased Output 500kHz Switching Frequency Low On-Resistance 45mΩ of High Side MOSFET 25mΩ of Low Side MOSFET Cycle-by-Cycle Current Limit Power Good Monitor for UVP & OVP Input Under Voltage Lockout Thermal Shutdown RoHS Compliant and Halogen Free z z z Pin Configurations (TOP VIEW) A1 A2 A3 z z Applications z z z LX B1 LX B2 LX B3 VIN C1 GND C2 GND C3 COMP D1 PGOOD D2 BOOT D3 z FB EN AGND z Industrial and Commercial Low Power Systems Computer Peripherals LCD Monitors and TVs Point of Load Regulation for High Performance DSPs, FPGAs and ASICs Green Electronics/Appliances WL-CSP-12B 1...