RT7237A

® RT7237A 2A, 18V, 340kHz Synchronous Step-Down Converter General Description The RT7237A is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 18V input supply. The RT7237A's current mode architecture and external compensation allow the transient response to be optimized over a wide input range and loads. Cycle-bycycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7237A also provides under voltage protection and thermal shutdown protection. The low current (<3 μ A) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7237A is available in an SOP-8 (Exposed Pad) package. Features z z z z z z z z z z z z z z z ±1.5% High Accuracy Reference Voltage 4.5V to 18V Input Voltage Range 2A Output Current Integrated N-MOSFET Switches Current Mode Control Fixed Frequency Operation : 340kHz Output Adjustable from 0.8V to 15V Stable with Low ESR Ceramic Output Capacitors Up to 95% Efficiency Adjustable Soft-Start Cycle-by-Cycle Current Limit Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection RoHS Compliant and Halogen Free Applications z z z z z z Wireless AP/Router Set-Top-Box Industrial and Commercial Low Power Systems LCD Monitors and TVs Green Electronics/Appliances Point of Load Regulation of High-Performance DSPs Simplified Applicat...