MPQ4253AGU-AEC1-Z

The MPQ4253A-AEC1 integrates a monolithic, step-down, switch-mode converter with two USB current-limit switches and charging port identification circuitry for each port. The MPQ4253A-AEC1 achieves up to 6A of output current (IOUT), with excellent load and line regulation across a wide input supply range. The USB outputs are fixed as one Type-A port and one Type-C port. Each USB switch is current-limited. The USB1 port supports USB Type-C 5V @ 3A DFP mode. The USB2 port supports DCP schemes for battery charging specification (BC1.2), Apple divider 3 mode, and 1.2V/1.2V mode, eliminating the need for outside user interaction. The MPQ4253A-AEC1 buck and USB2 output is always on if EN is high. The USB1 port capability automatically changes to 1.5A when USB2 detects that a device is plugged in. The step-down converter uses peak current mode control to regulate the output voltage (VOUT). Under light-load conditions, it enters pulse-frequency modulation (PFM) mode to achieve high light-load efficiency. Full protection features include hiccup current limiting, output over-voltage protection (OVP), and thermal shutdown. The device supports load-shedding mode for the USB1 port. When entering load-shedding, the Type-C advertised current capability changes to 1.5A. The MPQ4253A-AEC1 requires a minimal number of readily available, standard external components, and is available in a QFN-26 (5mmx5mm) package.