ACT4751M中文资料40 V, 4.0 A, USB Fast Charger Power IC for Automotive数据手册Qorvo规格书

描述 Description

Qorvo's ACT4751M is an automotive grade, programmable voltage regulator with bias supply rails for microcontrollers or USB PD controllers. It supports a wide input voltage range from 4.5 to 40 V and uses a synchronous step-down (buck) DC-to-DC architecture. It integrates both the high side and low side MOSFETS. These 50 mOhm on-resistance transistors enable high efficiency to reduce power losses.
The product's main buck converter can be dynamically programed to an output voltage between 3 and 24 V in 12.5 mV steps via the I2C interface or analog feedback. It also can dynamically program output current between 0 and 4 A in 256 steps via the I2C interface in a constant-current (CC) operation mode. The main buck operates in a proprietary current mode control that supports external clock syncing for switching frequencies between 450 kHz and 2.25 MHz with features of 100% duty, out-of-AM radio frequency and spread-spectrum operation.
ACT4751M is a perfect solution for USB Fast Charger applications based on the Power Delivery (PD) 3.0 and Programmable Power Supply (PPS) applications. The product integrates a 5 V / 350 mA mini-buck converter and a 20 mA AUX LDO of 0.9 V to 4.0 V to simplify application system designs. These rails can power up a controller and the 1.5 W VCONN line in active USB-C cables.
ACT4751M provides an I2C port supporting fast-mode plus (Fm+, 1 MHz) with configurable address and also provides a full set of protections including UVLO, over-voltage input voltage lockout, OVP, UVP (Hiccup/Latch-off), OCP and TSD.
ACT4751M is available in an AEC-Q100 grade, step-cut, side-wall-plating, 32-pin 5mm x 5mm QFN package with a power optimized footprint and exposed pad for improved thermal performance.

特性 Features

• AEC-Q100 Grade 1: -40 to +125°C
• CISPR 25 Class 3: PASS
• Certified USB Fast Charger, Reference Designs
• Qualcomm Certified, Quick Charger 4+ Designs
• 4.5 to 40 V operational input voltage
• Programmable output voltage by I2C from 3 to 24 V in 12.5 mV steps
• Programmable output current limit from 0 to 4 A in 256 step resolution
• Automotive, side-wall-plating, 5 mm x 5 mm QFN package

应用 Application

• USB Fast Charger (PD 3.0 PPS), USB PD Charger
• Quick Charge 4+, Quick Charge 4, Quick Charge 3.0
• High Power LED Lighting