MP8869H

MP8869H

18V, 12A, High-Efficiency, Wide-Input, Synchronous Step-Down Converter with Integrated Telemetry via I²C Interface

概要

The MP8869H is a high-frequency, synchronous, rectified, step-down switch-mode converter with an I²C control interface. The MP8869H offers a fully integrated solution that achieves up to 12A of continuous current and 15A of peak output current (I_OUT), with excellent load and line regulation across a wide input supply voltage (V_IN) range.

The output voltage (V_OUT) level can be controlled on the fly via the I²C serial interface. The reference voltage (V_REF) 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 adjustable via the I²C interface.

Constant-on-time (COT) control operation provides fast transient response. An open-drain power good (PG) pin indicates whether V_OUT is within the nominal range. Full protection features include over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown.

The MP8869H is available in a QFN-14 (3mmx4mm) package.

機能と利点

Output Voltage (V_OUT) Adjustable Up to 5.5V Using the FB Pin
Wide 2.85V to 18V Operating Input Voltage (V_IN) Range
12A Continuous/15A Peak Output Current (I_OUT)
1% Internal Reference Accuracy
I²C-Configurable Reference Voltage (V_REF) Range from 0.6V to 1.108V in 4mV Steps with Slew Rate Control
5% Accuracy V_OUT and I_OUT Monitoring via the I²C
Selectable Pulse-Frequency Modulation (PFM)/Pulse-Width Modulation (PWM) Mode, Adjustable Frequency and Current Limit via the 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