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Monolithic Power Systems
MP8864 - 4A Step-Down Converter
MP8864
4A, 21V High Efficiency Synchronous Step-Down Converter with I2C Interface
Product Introduction
The MP8864 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. It offers a very compact solution to achieve a 4 A continuous output current with excellent load and line regulation over a wide input supply range. The MP8864 has synchronous-mode operation for higher efficiency over the output load range. The reference voltage level is controlled, on-the-fly through a 3.4 Mbps I2C serial interface. The voltage range can be adjusted from 0.6 V to 1.87 V in 10 mV 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 shutdown (TSD). The MP8864 requires a minimal number of readily available, standard external components and is available in a 15-pin QFN15 (3mm x 3mm) package.Designed for High-Speed Applications
- Wide 4.5 V to 21 V Operation Input Range
- 50 mO/23 mO Low RDS(ON) Internal Power MOSFETs
- 1% VOUT Accuracy
- I2C Programmable Reference Voltage Range from 0.6 V to 1.87 V in 10 mV Steps with Slew-Rate Control
- I2C Selectable Switching Frequency. Default 600 kHz Switching Frequency
- Programmable Output Voltage
- Power-Saving Mode, OTP, and OCP via I2C
- Power Good Indication
- 1-Bit I2C Address Set Pin
- OCP in Hiccup Mode
- External Soft-Start
- Available in a QFN 3mm x 3mm Package
For 8A Development, Find MP8867
The MP8867 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. It achieves an 8A output current with excellent load and line regulation over a wide input supply range.
*MPS Authorized Distributor
