描述 Description

The RT7297C 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 RT7297C'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 RT7297C 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 RT7297C is available in an SOP-8 (Exposed Pad) package.

特性 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

應用 Application

? 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