75V, 0.3A Synchronous Step-Down Converter with Watchdog

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 and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. "MPS" and "The Future of Analog IC Technology" are registered trademarks of Monolithic Power Systems, Inc.

TYPICAL APPLICATION

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