RT6318B中文資料RichTek數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

General Description

The RT6318B/C is an advanced constant on-time

(ACOT? ) mode synchronous buck converter. The main

control loop of the RT6318B/C using an advanced constant

on-time (ACOT? ) mode control which provides a very fast

transient response. The RT6318B operates from 4.5V to

23V input voltage and the RT6318C 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 (RT6318B) and 5.1V to 23V (RT6318C)

Input Voltage Range 8A Output Current

? ACOT? Mode Performs Fast Transient Response

? ACOT? Architecture to Enable All MLCC Output

Capacitor Usage

? Fixed 750kHz (RT6318C) and 500kHz (RT6318B)

Switching Frequency

? High Efficient Internal Power MOSFET Switch-

20mΩ (High-Side) and 10mΩ (Low-Side)

? Fixed 3.3V (RT6318B) and 5V (RT6318C) 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)