The RT7249 is a high efficiency, monolithic synchronous step-down DC/DC converter with a power switch. The Buck converter can deliver up to 3A output current from 4.5V to 18V input supply. The RT7249's current-mode architecture and external compensation allow the transient response to be optimized over a wide input range and loads. Cycle-by-cycle current limit provides protections against shorted output and soft-start eliminates input current surge during start-up. The RT7249 also provides under-voltage protection and thermal shutdown. PWM frequency is adjustable by the ROSC pin and Power Switch current limit can also be adjusted by the RLIM pin. The low current (<3μA) in shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7249 is available in the WQFN-16L 4x4 package.
Applications
- Wireless AP/Router
- Set-Top-Boxes
- Industrial and Commercial Low Power Systems
- LCD Monitors and TVs
- Green Electronics/Appliances
- Point of Load Regulation of High-Performance DSPs
- USB Bus/Self Powered Hubs
- USB Peripheral Ports
- ACPI Power Distribution
- Battery Power Equipment
- 3G/3.5G Data Card