RT3181C

Wireless Power Transmitter for 15W Solution

The RT3181C is a highly integrated and scalable solution for wireless power transmitter applications. The RT3181C is designed to support the major wireless power standards - WPC (Qi). The RT3181C can be configured to various types of transmitter according to WPC specification.

The RT3181C supports fully integrated design for WPC Base Power Profile A11 transmitter which could be powered from a 5V output of USB or AC adaptor in low power applications. The RT3181C is able to support WPC MP-A5/MP-A11 transmitter design with external power stage for medium power applications.

The RT3181C can be paired with a Smart AC adapter from selected suppliers to provide reduced system cost and optimal efficiency over the range of power usage.

Applications

Mobile Phones
Phablets, Tablets
Wearable Devices
Medical and Industrial

Key Spec.
	RT3181C
Status	Active
Vin (min) (V)	17
Vin (max) (V)	5
Iin (max) (A)	2
Power Rating (W)	15
WPC Protocol	EPP
Compliance Ver	WPC 1.2.4
Features	1.8V LDO PMU;3.3V LDO PMU;5V Buck PMU;Aux ADC Input;Buck-boost controller;Current sensing amplifier;Die Temperature Sensor;I2C Master;I2C Slave;LED driver;OCP;OTP;OVP;QC Interface
Package Type	WQFN6x6-48

Features

Wireless Power Transmitter Compliant
► WPC qi V1.3
High Integration with Internal H-Bridge Power Stage and Current Sense Amplifier, Optimized for LP-A11 Solution
High Power with External Power Stage, Optimized for MP-A5/MP-A11 Solution
No Current Transformer Required
Low Quiescent Current Plus
► Selectable Ping Cycle in Custom Applications
► Low Current Sleep Mode Options including “Off” State with Wake Up I/O Pin
Programmable Thermal Protection
Support Foreign Object Detection
Support Fan Speed Control
Notifications
► 1 Buzzer
► 2 LEDs, Resistor Programmable
I²C Host Applications Interface (Option)
Internal Watchdog Timer
WQFN-48L 6x6mm Package

Datasheet
Title	Last Update	Download
Wireless Power Transmitter for 15W Solution	2019/01/21

Technical Documents
Title	Item Type	Last Update	Download
Richtek Featured Product Tree [Aug., 2023]	Selection Guide	2023/08/07

Videos
Title	Last Update	Views
High accuracy, low quiescent current battery power management solutions for wireless portable applications	2022/09/27	417

Part Number	Package Type	Package Qty.	Free Sample	Buy From Authorized Distributor
RT3181CGQW	WQFN6x6-48	2500	Request	Buy from Distributor

Please confirm with our distributor or sales representative for actual stock status.