Monolithic Power Systems MPQ8636-10

Description

The MPQ8636 is a fully-integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a very compact solution to achieve 10A/20A output current over a wide input supply range, with excellent load and line regulation. The MPQ8636 operates at high efficiency over a wide output-current–load range.The MPQ8636 uses Constant-On-Time (COT) control to provide a fast transient response and ease loop stabilization.An external resistor programs the operating frequency from 200kHz to 1MHz, and the frequency keeps nearly constant as input supply varies with the feed-forward compensation.The default under-voltage lockout threshold is internally set at 4.1V, but a resistor network on the enable pin can increase this threshold. Thesoft-start pin controls the output-voltage startup ramp. An open-drain power-good signal indicates that the output is within nominal voltage range.It has fully-integrated protection features that include over current protection, over-voltage protection and thermal shutdown.The MPQ8636 requires a minimal number of readily-available standard external components and is available in a 16-Pin QFN 3mm×4mm or a29-Pin QFN 5mm×4mm package.

Features

• Wide 4.5V-to-18V Operating Input Range
• 10A/20A Output Current
• Optimal Low RDS(ON) Internal Power MOSFETs Per Device
• Proprietary Switching-Loss–Reduction Technique
• Adaptive COT for Ultrafast Transient Response
• 0.5% Reference Voltage Over 0°C to 70°C Junction Temperature Range
• Programmable Soft-Start Time
• Pre-Bias Start-Up
• Programmable Switching Frequency from 200kHz to 1MHz
• Non-Latch OCP, OVP, and ThermalShutdown
• Output Adjustable from 0.611V to 13V

Typical applications

• Base Stations
• Telecom and Networking Systems
• Distributed Power Systems
• Personal Video Recorders
• Flat Panel Television and Monitors
• Servers

More information

• Datasheet
• IC product information