MP2420

75V, 0.3A Synchronous

Step-Down Converter with Watchdog

MP2420 Rev. 1.0

www.MonolithicPower.com

1

9/6/2015

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© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2420 is a step-down switching regulator

with integrated high- and low-side, high-voltage

power MOSFETs. It achieves a highly efficient

output of up to 0.3A, and the integrated

watchdog adds additional security redundancy

to the system.

The wide 4.5V to 75V input range accommodates

a variety of step-down applications in an

automotive environment. A 5μA shutdown

mode quiescent current in a full temperature

range is ideal for battery-powered applications.

The MP2420 allows for high-power conversion

efficiency over a wide load range by scaling

down the switching frequency under light-load

conditions to reduce switching and gate driver

losses. The start-up switching frequency and

short circuit can also be scaled down to prevent

an inductor current runaway.

Full protection features include under-voltage

lockout (UVLO) and thermal shutdown. Thermal

shutdown

provides

reliable,

fault-tolerant

operation.

The MP2420 is available in a TSSOP-16 EP

package.

FEATURES

• 20μA Quiescent Current for Buck Only

• Wide 4.5V to 75V Operating Input Range

(80V ABS MAX)

• 1.2Ω/0.45Ω Internal Power MOSFETs

• Programmable Soft Start

• FB Tolerance: 1% at Room Temperature,

2% at Full Temperature

• Adjustable Output Voltage

• Integrated Window Watchdog

• Power-On Reset during Power Up and

Under-Voltage Lockout (UVLO)

• Programmable Short Window Mode or Long

Window Mode

• Low Shutdown Mode Current of 5μA

• Available in a TSSOP-16 EP Package

APPLICATIONS

• Automotive Systems

• Industrial Power Systems

• Distributed Power Systems

• Battery-Powered 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