CN
Wireless Charging Transmitter
NU1705A
NU1705A is a new generation of highly integrated wireless power transmitter solution, it integrates a full-bridge power stage designed for a wide frequency range, a 32bit MCU core and a fast charge block of QC/PD protocol. The power system integrates all critical functions, such as high-efficiency power FETs, low-EMI FET drivers, bootstrap circuit, 4.8V/1.8V integrated LDO power supply, lossless current measurement.
Key Spec
Features

Wide Input Voltage: 4.5V to 14V

• Integrated High-Efficiency Full- Bridge FETs and FET Driver Optimized for Low EMI

• Integrated 4.8V and 1.8V LDO

• High-Accuracy, Lossless Current Measurement for FOD and In-Band Communication

• Integrated high precision Q Factor Measurement

• Integrated Low-Error-Rate Digital Demodulation

• Robust OVP, OCP, SCP, OJP (Juggle Protection) and OTP Protection

• I2C and UART Interfaces

• 11 channel, 15-bit ADC

• Integrated 92MHz, 32Bit/32K MTP/2K SRAM MCU Core

• Integrated QC/PD3.0/SCP/AFC protocol function

• Ultra-Low quiescent current in SLEEP mode: <20uA

• 4mm * 4mm QFN Package

Applications

• Wireless Power Transmitter Compliant with WPC V1.2.4 Basic Power Profile (BPP). Maximum 15W wireless transfer power

• Wireless Power Transmitter for Consumer, Industrial, Automotive Aftermarket, and Medical Applications

Datasheet Download
NU1705A

2025 / 08 / 22