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MP8870 3-18V, 15A Synchronous Step-Down Converter QFN-21
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pMPS MP8870 — synchronous step-down converter, 3-18V input, 15A output, QFN-21./p
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MP8870 3-18V, 15A Synchronous Step-Down Converter QFN-21
MPS MP8870 is a synchronous step-down converter that accepts 3 V to 18 V input, delivers 15 A, supplied in a QFN-21 package.
Key Specifications
| Part Number | MP8870 |
| Input Voltage | 3 V to 18 V |
| Output Current | 15 A |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-21 |
| Ordering Codes | MP8870 |
Features
- Wide 3V to 18V Input Voltage (VIN) Range
- 15A Continuous/20A Peak Output Current (IOUT)
- 8mΩ/2.5mΩ Low-RDS(ON) Internal Power MOSFETs
- Two-Time Multiple-Time Programmable (MTP) Memory (1)
- PMBus Compliant
- Differential Output Voltage (VOUT) Remote Sense
- 60μA Low Quiescent Current
- Adaptive Constant-On-Time (COT) Control for Ultra-Fast Transient Response
- Stable with Zero-ESR Output Capacitor (COUT)
- I2C-Configurable Reference Voltage (VREF) from 0.3V to 1.536V (in 1.5mV Steps) with Slew Rate Control
Applications
- Solid-State Drives (SSDs)
- System-On-Chip (SoC), FPGA, and DSP Cores
- Networking/Servers
- Flat-Panel Televisions and Monitors
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN-21 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP8870?
3–18 V input and 15 A output.
Which package is the MP8870 available in?
QFN-21.
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