Hot-selling and scarce MP8761GL-LF-Z High Efficiency 8A 18V Synchronous Step-Down Converter QFN spot stock

Product Descriptions

​

The MP8761 is a fully-integrated, highfrequency, synchronous, rectified, step-down,  switch-mode converter. It offers a very compact  solution to achieve a 8A output current over a  wide input-supply range with excellent load and  line regulation. The MP8761 operates at high  efficiency over a wide output-current load range.

The MP8761 uses Constant-On-Time (COT)  control mode to provide fast transient response  and ease loop stabilization.

An external resistor programs the operating  frequency from 200kHz to 1MHz. The  frequency stays nearly constant as the input  supply varies with the feed-forward  compensation.

The default under voltage lockout threshold is  4.1V, but a resistor network on the enable pin  can increase this threshold. The soft 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 full integrated protection features that  include over-current protection, over-voltage  protection and thermal shutdown.

The MP8761 is available in a 3mm×4mm QFN  package, and requires a minimal number of  readily-available components.

Product Features

• 2.5V to 5V Operating Input Range with External 5V Bias

• 4.5V to 18V Operating Input Range with Internal Bias

• 8A Output Current

• Low RDS(ON) Internal Power MOSFETs

• Proprietary Switching-Loss-Reduction Technique

• Adaptive COT for Ultrafast Transient Response

• 1.5% Reference Voltage Over Junction Temperature Range (−40°C to +125°C)

• Programmable Soft-Start Time

• Pre-Bias Start-Up

• Programmable Switching Frequency from 200kHz to 1MHz

• Non-Latch OCP, OVP, and Thermal Shutdown

• Output Adjustable from 0.611V to 13V

Product Applications

• Set-Top Boxes

• XDSL Modem/DSLAM

• Small-Cell Base Stations

• Personal Video Recorders

• Flat-Panel Televisions and Monitors

• Distributed Power Systems

Product Photos

For more product information, please download the PDF