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MP8859 2.8-22V, 3A, 500kHz Buck-Boost Converter QFN-16
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pMPS MP8859 — buck-boost converter, 2.8-22V input, 3A output, 500 kHz, QFN-16./p
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MP8859 2.8-22V, 3A, 500kHz Buck-Boost Converter QFN-16
MPS MP8859 is a buck-boost converter that accepts 2.8 V to 22 V input, delivers 3 A, switches at 500 kHz, supplied in a QFN-16 package.
Key Specifications
| Part Number | MP8859 |
| Input Voltage | 2.8 V to 22 V |
| Output Current | 3 A |
| Switching Frequency | 500 kHz |
| Topology | Buck-Boost Converter |
| Package | QFN-16 |
| Ordering Codes | MP8859 |
Features
- Wide 2.8V to 22V Operating Input Voltage Range
- 1V (1) to 20.47V Output Voltage Range (5V Default) with 10mV Resolution through I2C
- 3A Output Current or 4A Input Current
- Four Low RDS(ON) Internal Buck Power MOSFETs
- Adjustable Accurate CC Output Current Limit with Internal Sensing MOSFET via I2C
- 500kHz Switching Frequency
- Output Over-Voltage Protection (OVP) Hiccup
- Output Short-Circuit Protection (SCP) with Hiccup
- Over-Temperature Warning and Shutdown
- I2C Interface with ALT Pin
Applications
- USB PD Sourcing Ports
Design Notes
- Buck-boost operation keeps the output regulated either side of the input, which costs efficiency compared with a pure buck at the same rating.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN-16 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP8859?
2.8–22 V input and 3 A output.
What switching frequency does the MP8859 run at?
500 kHz, programmable.
Which package is the MP8859 available in?
QFN-16.
Shenzhen Gaorunxin Technology Co., Ltd
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