MPQ8626

16V, 6A, High Efficiency, Synchronous,

Step-Down Converter with

Adjustable Current Limit

MPQ8626 Rev. 1.1

www.MonolithicPower.com

1

8/16/2022

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

© 2022 MPS. All Rights Reserved.

DESCRIPTION

The MPQ8626 is a fully integrated, high-

frequency, synchronous, buck converter. The

MPQ8626 offers a very compact solution that

achieves up to 6A of output current with

excellent load and line regulation over a wide

input supply range. The MPQ8626 operates at

high efficiency over a wide output current load

range.

The

MPQ8626

adopts

an

internally

compensated constant-on-time (COT) control

that provides fast transient response and eases

loop stabilization.

The operating frequency can be set to 600kHz,

1100kHz,

or

2000kHz

easily

with

MODE

configuration, allowing the MPQ8626 frequency

to remain constant regardless of the input and

output voltages.

The output voltage start-up ramp is controlled

by an internal 1.5ms timer, which can be

increased by adding a capacitor on TRK/REF.

An open-drain power good (PGOOD) signal

indicates if the output is within its nominal

voltage range. PGOOD is clamped at around

0.7V with an external pull-up voltage when the

input supply fails to power the MPQ8626.

Full protection features include over-current

protection

(OCP),

over-voltage

protection

(OVP), under-voltage protection (UVP), and

over-temperature protection (OTP).

The MPQ8626 requires a minimal number of

readily

available,

standard,

external

components and is available in a QFN-14

(2mmx3mm) package.

FEATURES

• Wide Input Voltage Range

o

2.85V to 16V with External 3.3V VCC

Bias

o

4V to 16V with Internal VCC Bias or

External 3.3V VCC Bias

• 6A Output Current

• Programmable Accurate Current Limit Level

• Low R

DS(ON) Integrated Power MOSFETs

• Proprietary Switching Loss Reduction

Technique

• Adaptive Constant-On-Time (COT) for

Ultrafast Transient Response

• Stable with Zero ESR Output Capacitor

• 0.5% Reference Voltage Over 0°C to +70°C

Junction Temperature Range

• 1% Reference Voltage Over -40°C to

+125°C Junction Temperature Range

• Selectable Forced CCM or Pulse-Skip

Operation

• Excellent Load Regulation

• Output Voltage Tracking

• Output Voltage Discharge

• PGOOD Active Clamped at Low Level

during Power Failure

• Programmable Soft-Start Time from 1ms

and Up

• Pre-Bias Start-Up

• Selectable Switching Frequency from

600kHz, 1100kHz, and 2000kHz

• Non-Latch for OCP, OVP, UVP, OTP, and

UVLO

• Output Adjustable from 0.6V to 0.9 x VIN Up

to 6V Max

• Available in a QFN-14 (2mmx3mm)

Package

APPLICATIONS

• Telecom and Networking Systems

• Server, Cloud-Computing, Storage

• Base Stations

• General Purpose Point-of-Load (PoL)

• 12V Distribution Power Systems

• High-end TV

• Game Consoles and Graphic Cards

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.