DESCRIPTION

The MP8861 is a high-frequency, synchronous,

rectified, step-down, switch-mode converter

with an I2C control interface. The MP8861 offers

a fully integrated solution that achieves 6A of

continuous output current with excellent load

and line regulation over a wide input supply

range.

The output voltage level can be controlled onthe-

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-save mode (PSM)

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 that the output

voltage is in the nominal range. Full protection

features include over-voltage protection (OVP),

over-current protection (OCP), and thermal

shutdown.

The MP8861 is available in a QFN-14

3mmx4mm) package.

FEATURES

 Wide 2.85V to 18V Operating Input Range

 6A Continuous 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)

 VOUT Adjustable up to 5.5V using FB pin

 Available in a QFN-14 (3mmx4mm)

Package

APPLICATIONS

 Solid-State Drives (SSD)

 Flat-Panel Televisions and Monitors

 Digital Set-Top Boxes

 Distributed Power Systems

 Networking/Servers