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MP8869S

Active
2.85-18V, 12A, High-Efficiency, Synchronous Step-Down Converter with Integrated Telemetry via I2C Interface
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Datasheet (EN)

Product Description

The MP8869S is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8869S offers a fully integrated solution that achieves 12A of continuous current and 15A of peak output current with excellent load and line regulation over a wide input supply range. The output voltage level can be controlled on-the-fly through an I2C serial interface. The reference voltage range can be adjusted from 0.6V to 1.108V in 4mV steps. The voltage slew rate, frequency, current limit, hiccup/latch-off protection, enable, and power-saving mode are also selectable through the I2C interface. Constant-on-time (COT) control operation provides fast transient response. An open-drain power good (PG) pin indicates when the output voltage is in the nominal range. Full protection features include over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown. The MP8869S is available in a QFN-14 (3mmx4mm) package.

Product Features

  • Wide 2.85V to 18V Operating Input Range
  • 12A Continuous/15A Peak Output Current
  • 1% Internal Reference Accuracy
  • I2C-Programmable Reference Range from 0.6V to 1.108V in 4mV Steps with Slew Rate Control
  • 5% Accuracy Output Voltage and Output Current Monitoring via I2C
  • Selectable PFM/PWM Mode, Adjustable Frequency and Current Limit through I2C
  • Four Different Selectable I2C Addresses
  • External Soft Start (SS)
  • Open-Drain Power Good (PG) Indication
  • Output Over-Voltage Protection (OVP)
  • Hiccup/Latch-Off Over-Current Protection (OCP)
  • Available in a QFN-14 (3mmx4mm) Package

Parametrics

  • fsw (max) (kHz)1250
  • Vin (min) (V)2.85
  • Vin (max) (V)18
  • Iout (max) (A)12
  • Isw Limit (typ) (A)14
  • Vfb (typ) (V)0.72
  • Iq (typ) (mA)0.42
  • Vout (max) (V)5.5
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-14 (3x4)
  • Control ModeCOT
  • Common FeaturesExternal Soft Start, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features4 Different I2C Addresses Selectable, 5% Accuracy Output Voltage and Output Current Readback via I2C, I2C Interface, Programmable Frequency, Programmable Output Voltage, Selectable Current Limit, Selectable PFM/PWM Mode

EVKT-8869S


18V, 12A, High-Efficiency, Wide-Input, Synchronous, Step-Down Converter

The MP8869S is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8869S offers a fully integrated solution that achieves 12A of continuous current and 15A of peak output current with excellent load and line regulation over a wide input supply range.

Highly customizable, the MP8869S is capable of supporting a diverse array of low-voltage applications. Users can program it via MPS I2C GUI; however, changes made in I2C mode will not be retained once the EVB is powered down. 

The EVKT8869S is a valuable evaluation tool well-suited for all types of experience levels, from beginner to expert, and can help users quickly determine if the MP8869S is right for their target application.

$75.00 + tax


EV8869S-L-00A


High Efficiency,12A,18V, Synchronous Step-Down Converter with I²C Interface

The EV8869S-L-00A is used for demonstrating the performance of MPS’s MP8869S. MP8869S is a highly integrated and high frequency synchronous step-down switcher with I2C control interface. It is optimized to support up to 12A continuous/15A peak output current over an input supply range from 2.85V to 18V with excellent load and line regulation.

COT control operation provides fast transient response and eases loop stabilization. In I2C control loop, the output voltage level can be controlled, on-the fly through an I2C serial interface. Output voltage range can be adjusted from 0.6V to 1.108V in 4mV steps. Voltage scaling slew rate, enable and power saving mode are also selectable through the I2C interface. Full protection features include over voltage, over-current protection and thermal shut down.

The MP8869S is available in QFN-14(3mmx4mm) package.

$25.00 + tax


MP88xx I2C GUI


Configure multiple parameters of the MP88xx including output voltage and fsw.

This I2C GUI allows you to program the MP88xx . By using this I2C GUI, you can set the output voltage, switching frequency, slew rate, and operation mode. Please reference the parts respective user guides for installation and programing instructions.

System Requirements:

Windows 7 or later

.Net Framework 4 or later


EVKT-USBI2C-02


Communication Interface Device USB to I2C/PMBus, included with product evaluation kit or can be purchased separately. 

The EVKT-USBI2C-02 is included with the product evaluation kit, or it can be purchased separately. This communication interface provides the USB to I2C port as well as PMBus capabilities. It is designed to work with MPS I2C and PMBus products, and Virtual Bench Pro, and I2C GUI tools.  Together with MPS Virtual Bench Pro and I2C GUI tools, it provides a quick and easy way to evaluate the performance of MPS digital products.

The EVKT-USBI2C-02 kit includes:

  • 1 USB to I2C communication device interface
  • 1 USB cable
  • 1 10-pin ribbon cable
  • 1 3-pin ribbon cable
  • Thumbdrive with datasheet and driver files

$25.00 + tax