MP8763D

High Efficiency, 12A, 18V

Synchronous Step-down Converter

With Output Discharge

MP8763D Rev. 1.1

www.MonolithicPower.com

1

1/15/2015

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© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP8763D is a fully integrated high

frequency synchronous rectified step-down

switch mode converter. It offers a very compact

solution to achieve 12A output current over a

wide input supply range with excellent load and

line regulation. The MP8763D operates at high

efficiency over a wide output current load range.

The MP8763D 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 and the

frequency keeps nearly constant as input

supply

varies

with

the

feedforward

compensation.

The default under voltage lockout threshold is

internally set at less than 4.1V, but a resistor

network on the enable pin can increase this

threshold. An open drain power good signal

indicates that the output is within nominal

voltage range.

The MP8763D employs a programmable soft

start and shut-down scheme. With the soft shut-

down feature, it discharges the output voltage

smoothly when the enable signal is deserted.

It has fully integrated protection features that

include over-current protection, over-voltage

protection and thermal shutdown.

The MP8763D requires a minimal number of

readily available standard external components

and is available in a 3mm×4mm package.

FEATURES

• 2.5V to 18V Operating Input Range with

External 5V Bias

• 4.5V to 18V Operating Input Range with

Internal Bias

• 12A Output Current

• Proprietary

Switching

Loss

Reduction

Technique

• Adaptive COT for Ultrafast Transient

Response

• 1.5% Reference Voltage Over -40°C to

125

°C Junction Temperature Range

• Programmable Soft Start and Shut-down

Time

• Pre-Bias Start up

• Output Discharge after EN Shut down

• Programmable Switching Frequency from

200kHz to 1MHz

• Non-latch

OCP,

OVP

and

Thermal

Shutdown

• Output Adjustable from 0.611V to 13V

APPLICATIONS

•

Storage

•

Set-Top Boxes

•

XDSL Modem/DSLAM

•

Small-Cell Base Stations

•

Personal Video Recorders

•

Flat Panel Television and Monitors

•

Distributed Power Systems

All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For

MPS green status, please visit MPS website under Quality Assurance. “MPS”

and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.