ACT4751M AEC-Q100, USB Fast Charger Power IC with 40V Input, 4A, Programmable Output Voltage and Current FEATURES GENERIC DESCRIPTION AEC-Q100 Grade 1: -40 to +125C The ACT4751M is a programmable DC-to-DC buck converter with bias supply rails. This synchronous step- CISPR 25 Class 3: PASS down voltage regulator supports a wide input voltage of 4.5 Certified USB Fast Charger, Reference Designs V to 40 V and integrates both the high side and low side Qualcomm Certified, Quick Charger Designs MOSFETS. These 50m R transistors enable high DSON efficiency by reducing power losses. 4.5 V to 40 V Operational Input Voltage 2 The ACT4751M main buck converter can be dynamically Programmable Output Voltage by I C programmed to an output voltage between 3 V and 24 V 3 V to 24 V in 12.5 mV Step 2 in 12.5 mV steps via the I C or analog feedback. Also, it Programmable Output Current Limit can dynamically program output current between 0 A to 4 A in 256 Step Resolution 2 4 A in 256 steps via the I C in a constant-current (CC) 450 kHz to 2.25 MHz Fixed-Frequency Current-Mode operation mode. The main-buck operates in a proprietary Control with External Clock Sync, 100% Duty Operation, current mode control that supports external clock syncing for Stable with Low-cost MLCC switching frequencies between 450 kHz and 2.25 MHz. Out of AM Radio / Spread-Spectrum Operation The ACT4751M is a perfect solution for USB Power Delivery 50 m Integrated High-Side / Low-Side FETs 3.0 Programmable Power Supply (PD 3.0 PPS) charging 5 V / 350 mA Bias Buck Converter applications. The ACT4751M integrates a 5 V / 350 mA 20 mA AUX LDO, Programmable Output Voltage mini-buck converter and a 20 mA AUX LDO to simplify 2 I C Interface, Fast-mode Plus (Fm+, 1 MHz) with application system designs. These rails can power up USB Configurable Address PD controllers and the 1.5W VCONN line in active USB-C Protections: cables. UVLO, OVP, UVP (Hiccup/Latch-off), OCP, TSD The ACT4751M is available in an AEC-Q100 grade, half- Automotive, Side-wall-plating, 5 mm 5 mm QFN etched-lead side-wall-plating, 5 mm x 5 mm QFN package Package with a power optimized footprint and exposed pad for improved thermal performance. APPLICATIONS USB Fast Charger (PD 3.0 PPS) Quick Charge 4, Quick Charge 4+, Quick Charge 3.0 High Power LED Lighting ACT4751M-101-REF04 (Test ID: 2254) ACT4751M-101-REF05 (QC20191223118) 12V Input, USB Charger (USB PD 3.0) 4-Port Total 280W: Quick Charge 4 (USB-C 80W 2) DC Reference Design: USB-C 80W 1 + Quick Charge 3.0 (Type-A 60W 2) ACT4751M Data Sheet, Rev. E, 16-Jul-2020 1 www.qorvo.com Subject to change without noticeACT4751M AEC-Q100, USB Fast Charger Power IC with 40V Input, 4A, Programmable Output Voltage and Current Ordering Information Figure 1. Part Numbering Structure 1. Standard product options are identified in this table. Contact factory for custom options, minimum order quantity required. 2. This device is RoHS Compliant and with Pb-free plating unless specified differently. The term Pb-free means semiconductor products that are in compliance with current RoHS (Restriction of Hazardous Substances) standards. 3. Package Code designator Q represents QFN 4. Pin Count designator I represents 32 pins 5. See the Factory Programming Options section for more information about CMI. ACT4751M Data Sheet, Rev. E, 16-Jul-2020 2 www.qorvo.com Subject to change without notice