描述 Description

The MP4246 is a synchronous, four-switch buck-boost converter with integrated MOSFETs. The device can deliver up to 6A of output current (IOUT) at certain input supply ranges with excellent efficiency.

The MP4246 is suitable for USB power delivery (PD) and wireless charging application. It can work well with an external PD or wireless charging controller through the I2C interface. The I2C interface and one-time programmable (OTP) memory provide flexibility and configurable features. Fault condition protections include constant-current (CC) current limiting, output over-voltage protection (OVP), input OVP, and thermal shutdown (TSD).

The MP4246 requires a minimal number of readily available, standard external components. The MP4246 is available in a small QFN-19 (4mmx5mm) package with wettable flanks.

特性 Features

? 6A Buck-Boost Converter with Four Integrated MOSFETs
? Operation Input Voltage (VIN) Range: 4V to 22V, Withstands 36V Input
? 24V VIN Over-Voltage (OV) Shutdown Protection
? 1V to 22V Output Voltage (VOUT) Range
? I2C-Configurable Reference Voltage (VREF) Range: 0.1V to 2.147V with 1mV Resolution
? Up to 98.82% Peak Efficiency
? Integrated 5V/60mA Low-Dropout (LDO) Regulator to Supply External Microcontroller (MCU)
? Constant Current Limit with 5% Accuracy
? Selectable Input or Output Constant-Current (CC) Limit with 5% Accuracy via Factory Trim
? Accurate Output Current (IOUT) Monitor
? Selectable 280kHz, 420kHz, 600kHz, or 1MHz Frequency with Frequency Spread Spectrum (FSS)
? Selectable Automatic Pulse-Frequency Modulation (PFM)/Pulse-Width Modulation (PWM) Mode and Forced PWM Mode
? Configurable I2C Slave Address
? Line Drop Compensation
? I2C, Alert, and One-Time Programmable (OTP) Memory
? EN Shutdown Passive Discharge
? Available in a QFN-19 (4mmx5mm) Package with Wettable Flanks