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Overview
| Topology | Buck Converter |
| Input voltage | 4-40 V |
| Output 1 | 24 V / 4 A |
| IC revision | 1.1 |
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.
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
More information
Products
| Order Code | Datasheet | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Wire Section | C | VR (V (DC)) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | DF (%) | Pitch (mm) | Ø D (mm) | L (mm) | Technical Reference | Tol. C | Size | RISO | Ceramic Type | W (mm) | H (mm) | Fl (mm) | RDC (mΩ) | L (µH) | ISAT (A) | fres (MHz) | Mount | Pins (mm) | Rows | Gender | Type | IR (A) | Packaging | Color | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691214110002S | SPEC | 6 files | WR-TBL Series 2141S - 3.50 mm Horizontal Entry Modular w. Rising Cage Clamp | Rising Cage Clamp | PCB | Yes | 30 to 16 (AWG) 0.05 to 1.31 (mm²) | – | – | – | -30 °C up to +120 °C | – | – | – | 3.5 | – | 7 | – | – | – | – | – | – | – | – | – | – | – | – | – | 2 | – | – | Horizontal | 10 | Box | Green | |
 | 74439358047 | SPEC | 9 files | WE-XHMI SMT Power Inductor | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | – | – | 8.8 | – | – | 8080 | – | – | 8.3 | 7.8 | – | 8.65 | 4.7 | 20.5 | 25 | SMT | 2 | – | – | – | 9.5 | – | – | |
 | 860010674014 | SPEC | 7 files | WCAP-ATG8 Aluminum Electrolytic Capacitors | – | – | – | – | 100 µF | 50 | 2000 | -40 °C up to +85 °C | 286 | 50 | 10 | 3.5 | 8 | 11.5 | ATBE115101M050DSPA7B000 | ±20% | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
 | 885012006051 | SPEC | 7 files | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | 10 pF | 50 | – | – | – | – | – | – | – | 1.6 | NP00603100J050DFCT10000 | ±5% | 0603 | 10 GΩ | NP0 Class I | 0.8 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | |
 | 885012206071 | SPEC | 7 files | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | 100 nF | 25 | – | -55 °C up to +125 °C | – | – | 3.5 | – | – | 1.6 | X7R0603104K025DFCT10000 | ±10% | 0603 | 5 GΩ | X7R Class II | 0.8 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | |
| 885012206080 | SPEC | 7 files | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | 330 pF | 50 | – | – | – | – | 2.5 | – | – | 1.6 | X7R0603331K050DFCT10000 | ±10% | 0603 | 10 GΩ | X7R Class II | 0.8 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | |
| 885012106010 | SPEC | 7 files | WCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | 1 µF | 10 | – | – | – | – | 10 | – | – | 1.6 | X5R0603105M010DFCT10000 | ±20% | 0603 | 0.1 GΩ | X5R Class II | 0.8 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | |
| 885012207103 | SPEC | 7 files | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | 1 µF | 50 | – | – | – | – | 10 | – | – | 2 | X7R0805105K050DFCT10000 | ±10% | 0805 | 0.1 GΩ | X7R Class II | 1.25 | 1.25 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | |
| 885012107010 | SPEC | 7 files | WCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | 10 µF | 10 | – | – | – | – | 10 | – | – | 2 | X5R0805106M010DFCT10000 | ±20% | 0805 | 0.01 GΩ | X5R Class II | 1.25 | 1.25 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | |
 | 60910213421 | SPEC | 3 files | WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | 2.54 | – | 5.08 | – | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | 2 | – | Jumper | – | 3 | Bag | Black | |
 | 61300111121 | SPEC | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | 2.54 | – | 2.54 | – | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | THT | 1 | Single | Pin Header | Straight | 3 | Bag | – | |
 | 61300211121 | SPEC | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | 2.54 | – | 5.08 | – | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | THT | 2 | Single | Pin Header | Straight | 3 | Bag | – | |
| 61300411121 | SPEC | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | 2.54 | – | 10.16 | – | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | THT | 4 | Single | Pin Header | Straight | 3 | Bag | – |
| Samples |
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| Order Code | Datasheet | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Wire Section | C | VR (V (DC)) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | DF (%) | Pitch (mm) | Ø D (mm) | L (mm) | Technical Reference | Tol. C | Size | RISO | Ceramic Type | W (mm) | H (mm) | Fl (mm) | RDC (mΩ) | L (µH) | ISAT (A) | fres (MHz) | Mount | Pins (mm) | Rows | Gender | Type | IR (A) | Packaging | Color | Samples |
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