General Description
●The RT7257G 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 RT7257G"s current mode architecture and external compensation allow the transient response to be optimized over a wide input voltage range and loads. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7257G also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7257G is available in an SOP-8 (Exposed Pad) package.
●Features
●±1.5% High Accuracy Reference Voltage
●4.5V to 18V Input Voltage Range
●3A Output Current
●Integrated N-MOSFET Switches
●Current Mode Control
●Fixed Frequency Operation : 800kHz
●Output Adjustable from 0.8V to 12V
●Up to 95% Efficiency
●Programmable Soft-Start
●Stable with Low ESR Ceramic Output Capacitors
●Cycle-by-Cycle Current Limit
●Input Under Voltage Lockout
●Output Under Voltage Protection
●Thermal Shutdown Protection
●RoHS Compliant and Halogen Free
●Applications
●Wireless AP/Router
●Set-Top-Box
●ndustrial and Commercial Low Power Systems
●LCD Monitors and TVs
●Green Electronics/Appliances
●Point of Load Regulation of High-Performance DSPs
