MP8719

Synchronous Buck Converter

with ±1A LDO and Buffered Reference

MP8719 Rev1.01

www.MonolithicPower.com

1

8/3/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2017 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP8719 provides a complete power supply

with the highest power density for DDR3,

DDR3L, LPDDR3, and DDR4 memory. The

MP8719

integrates

a

high-frequency,

synchronous, rectified, step-down, switch-mode

converter (VDDQ) with a 1A sink/source LDO

(VTT)

and

buffered

low-noise

reference

(VTTREF).

The MP8719 operates at high efficiency over a

wide output current load range based on MPS’s

proprietary switching loss reduction technology

Adaptive constant-on-time (COT) control mode

provides fast transient response and eases loop

stabilization. The DC auto-tune loop provides

good load and line regulation.

The VTT LDO provides 1A of sink/source

current capability and requires only a 22μF

ceramic capacitor. The VTTREF tracks VDDQ/2

with excellent 1% accuracy.

Full protection features include over-current

(OC) limit, over-voltage protection (OVP),

under-voltage

protection

(UVP),

over-

temperature warning (OTW), and thermal

shutdown.

The MP8719 requires a minimal number of

external components and is available in a QFN-

16 (3mmx3mm) package.

FEATURES

 Wide 4.5V to 26V Operating Input Range

 135μA Low Quiescent Current

 12A Continous Output Current

 13A Peak Output Current

 Selectable Ultrasonic Mode (USM)

 Selectable

500kHz/700kHz

Switching

Frequency

 Built-In ±1A VTTLDO

 1% Buffered VTTREF Output

 Adaptive COT for Fast Transient

 DC Auto-Tune Loop

 Stable with POSCAP and Ceramic Output

Capacitors

 Over-Temperature Warning (OTW)

 Internal Soft Start (SS)

 Output Discharge

 OCL, OVP, UVP, and Thermal Shutdown

 Latch-Off Reset via EN or Power Cycle

 Available

in

a

QFN-16

(3mmx3mm)

Package

APPLICATIONS



Televisions



Networking Systems



Distributed Power Systems



Set-Top-Box

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

directive. For MPS green status, please visit the MPS website under

Quality Assurance. “MPS” and “The Future of Analog IC Technology” are

registered trademarks of Monolithic Power Systems, Inc.

TYPICAL APPLICATION