The Future of Analog IC Technology
75V, 0.3A Synchronous
Step-Down Converter with Watchdog
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
The MP2420 is available in a TSSOP-16 EP
• 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
• Low Shutdown Mode Current of 5μA
• Available in a TSSOP-16 EP Package
• 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.
MP2420 Rev. 1.0
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