MPQ2918

4V - 40V Input, Current Mode,

Synchronous, Step-Down Controller

AEC-Q100 Qualified

MPQ2918 Rev. 1.01

www.MonolithicPower.com

1

8/17/2017

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© 2017 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MPQ2918 is a high-voltage, synchronous,

step-down controller that steps down voltages

directly from up to 40V. The MPQ2918 uses

pulse-width modulation (PWM) current control

architecture

with

accurate

cycle-by-cycle

current limiting and is capable of driving dual N-

channel MOSFETs.

Advanced asynchronous mode (AAM) enables

non-synchronous operation to optimize light-

load efficiency.

The operating frequency of the MPQ2918 can

be programmed by an external resistor or

synchronized to an external clock for noise-

sensitive applications. Full protection features

include precision output over-voltage protection

(OVP), output over-current protection (OCP),

and thermal shutdown.

The MPQ2918 is available in TSSOP20-EP and

QFN-20 (3mmx4mm) packages.

FEATURES

 Wide 4V to 40V Operating Input Range

 Dual N-Channel MOSFET Driver

 0.8V Voltage Reference with ±1.5%

Accuracy Over Temperature

 Low Dropout Operation: Maximum Duty

Cycle at 99.5%

 Programmable Frequency Range: 100kHz -

1000kHz

 External Sync Clock Range: 100kHz -

1000kHz

 180° Out-of-Phase SYNCO Pin

 Programmable Soft Start (SS)

 Power Good (PG) Output Voltage Monitor

 Selectable Cycle-by-Cycle Current Limit

 Output Over-Voltage Protection (OVP)

 Over-Current Protection (OCP)

 Internal LDO with External Power Supply

Option

 Programmable Forced CCM and AAM

 Available in TSSOP20-EP and QFN-20

(3mmx4mm) Packages

 AEC-Q100 Grade-1

APPLICATIONS

 Automotive

 Industrial Control Systems

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