Richtek RT8813DGQW

降压降压4.5V ~ 26V

Overview

The RT8813DGQW is a 3/2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and computer applications. The IC integrates a Constant-On-Time (COT) PWM controller, two MOSFET drivers with internal bootstrap diodes, as well as channel current balance and protection functions including Over Voltage Protection (OVP), Under Voltage Protection (UVP), current limit, and thermal shutdown into the WQFN-24L 4x4 package. The RT8813DGQW adopts RDS(ON) current sensing technique. Current limit is accomplished through continuous inductor-current-sense, while RDS(ON) current sensing is used for accurate channel current balance. Using the method of current sampling utilizes the best advantages of each technique. The RT8813DGQW features external reference input and PWM-VID dynamic output voltage control, in which the feedback voltage is regulated and tracks external input reference voltage. Other features include adjustable switching frequency, dynamic phase number control, internal soft-start, power good indicator, and enable functions.

Features

Tape & Reel (TR) Package
Transistor Driver Output Type
Positive Output Configuration
Buck Topology
1 Number of Outputs
1 Output Phases
4.5V ~ 26V Voltage - Supply (Vcc/Vdd)
150kHz ~ 600kHz Frequency - Switching
Yes Synchronous Rectifier
No Clock Sync
Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start Control Features
Surface Mount Mounting Type