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DC-DC Switching Synchronous Step-Down Regulator, Adjustable, 2.5V-5.5V in, 0.6V-5V out, 3A, TSOT23-8


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Technical Datasheet:
MP2143DJ-LF-Z   Datasheet
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Product Overview

MP2143 is a monolithic, step-down, switch mode converter with internal power MOSFETs. It can achieve up to 3A continuous output current from a 2.5V to 5.5V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V. Constant-on-time control provides fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. The MP2143 is available in small TSOT23-8 package and requires only a minimal number of readily available standard external components. The MP2143 is ideal for a wide range of applications including high-performance DSPs, FPGAs, smartphones, portable instruments and DVD drivers. Applications include low voltage I/O system power, handheld/battery-powered systems and wireless/networking cards.
  • COT (constant-on-time) synchronous step down switcher
  • 100% duty cycle in dropout
  • Up to 3A output current, low IQ: 40µA
  • 80mohm and 40mohm internal power MOSFET switches
  • Default 1.2MHz switching frequency
  • EN and power-good for power sequencing
  • Cycle-by-cycle overcurrent protection
  • Auto discharge at power off
  • Short circuit protect with hicc-up mode
  • Stable with low-ESR output ceramic capacitors


MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.


Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

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Synchronous Buck (Step Down)











MSL 1 - Unlimited

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Technical Documents (1)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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Packaging type Re-Reel
A £3.50 re-reeling charge will be added for this product"
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Cut Tape :3818567 Check stock

Back order today stock arriving week commencing 05/04/23

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£1.74 ( ex VAT  ) £2.088 ( inc VAT )

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100 (Cut Tape 3818567) x 1.74 = £174.00
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100 (Re-reel 3818567RL) x 1.74 = £174.00
100 (Re-reel 3818567RL) x 2.088 = £208.80
Total Price: £174.00 ( ex VAT  )
Total Price: £208.80 ( inc VAT )
For the quantity ordered, some or all of your order will be placed on backorder. See 'Check stock and lead times' for details.
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