General Description
The RT8253B is a high-efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 23V input supply. The RT8253Bs current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors.

Features
● ±1.5% High Accuracy Feedback Voltage
● 4.5V to 23V Input Voltage Range
● 3A Output Current
● Integrated N-MOSFET Switches
● Current Mode Control
● Fixed Frequency Operation : 1.2MHz
● Adjustable Output from 0.8V to 20V
● Up to 95% Efficiency
● Programmable Soft-Start
● Stable with Low-ESR Ceramic Output Capacitors
● Cycle-by-Cycle Over Current Protection
● Input Under Voltage Lockout
● Output Under Voltage Protection
● Thermal Shutdown Protection
● RoHS Compliant and Halogen Free

Applications
● External Storage Device
● 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