General Description

The RT6316B/C is an advanced constant on-time (ACOT?)

mode synchronous buck converter. The main control loop

of the RT6316B/C using an advanced constant on-time

(ACOT?) mode control which provides a very fast transient

response. The RT6316B operates from 4.5V to 23V input

voltage and RT6316C operates from 5.1V to 23V.

Applications

? Industrial and Commercial Low Power Systems

? Computer Peripherals

? LCD Monitors and TVs

? Green Electronics/Appliances

? Point of Load Regulation for High-Performance DSPs,

FPGAs, and ASICs

Features

? 4.5V to 23V (RT6316B) and 5.1V to 23V (RT6316C)

Input Voltage Range 6A Output Current

? ACOT? Mode Performs Fast Transient Response

? ACOT? Architecture to Enable All MLCC Output

Capacitor Usage

? Fixed 750kHz (RT6316C) and 500kHz (RT6316B)

Switching Frequency

? High Efficient Internal Power MOSFET Switch-

30mΩ (High-Side) and 15mΩ (Low-Side)

? Fixed 3.3V (RT6316B) and 5V (RT6316C) LDOs

Output Supply 100mA

? Pre-biased Soft-Start

? Cycle-by-Cycle Over-Current Protection

? Input Under-Voltage Lockout

? Thermal Shutdown Protection

? Output Over-/Under-Voltage Protection

? Ultrasonic Mode (USM)