6A High Efficient Synchronous Step-Down Converter with I2C Interface
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The EV8865-Q-00A is used for demonstrating the performance of MPS’s MP8865. MP8865 is a highly integrated and high frequency synchronous step-down switcher with I2C control interface. It is optimized to support up to 6A load current over an input supply range from 4.5V to 21V with excellent load and line regulation.
Current-Mode operation provides fast transient response and eases loop stabilization. The output voltage level can be controlled, on-the fly through a 3.4Mbps I2C serial interface. Voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Voltage slew rate, switching frequency and power savings mode are also selectable through the I2C interface. Fully protection features includes over current protection, over voltage protection and over temperature protection.
MP8865 is available in QFN15 (3mmx3mm) package.
- Wide 4.5V-to-21VOperationInputRange
- 45mΩ/18mΩ Low RDS(ON) Internal Power MOSFETs
- 1% VOUT Accuracy
- I2C ProgrammableOutputRange from 0.6V to 1.87V in 10mV Steps with Slew Rate Control
- I2C Selectable Switching Frequency. Default 600kHz Switching Frequency.
- Programmable Default Output Voltage
- Power Saving Mode, OTP and OCP Via I2C
- Power Good Indication
- 1 bit I2C Address Set pin
- OCP Protection and Hiccup
- External Soft Start
- Available in QFN3x3 Package
- IC Supported 1MP8865
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The MP8865 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with a I2C control interface. It offers a very compact solution to achieve a 6A continuous output current with excellent load and line regulation over a wide input-supply range. The MP8865 has synchronous-mode operation for higher efficiency over the output-load range. The reference voltage level can be controlled, on-the-fly through a 3.4Mbps I2C serial interface. The voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Also, the voltage slew rate, switching frequency, enable, and power-saving mode are selectable through the I2C interface. Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection (OCP), over-voltage protection (OVP), and thermal shut down (TSD). The MP8865 requires a minimal number of readily available, standard, external components and is available in a 15-pin QFN15 (3x3mm) package.