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MP2143DJ-LF-Z

MP2143DJ-LF-Z

Monolithic Power Systems Inc.
Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 3A SOT-23-8 Thin, TSOT-23-8
NRND3,636 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The MP2143DJ-LF-Z is a monolithic, step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 3A of continuous output current from a 2.5V to 5.5V input voltage range with excellent load and line regulation. The output voltage can be regulated as low as 0.6V, making it suitable for powering low-voltage core rails in modern digital systems.

Why Choose This Part

This regulator features high efficiency across a wide load range and is stable with low-ESR ceramic output capacitors to minimize PCB footprint. It includes comprehensive protection features such as cycle-by-cycle over-current protection and hiccup mode for short-circuit conditions. The inclusion of a Power Good (PG) pin and enable control simplifies complex power-up sequencing.

Applications

Low Voltage I/O Systems
Providing high-efficiency power conversion for FPGA, DSP, and MCU I/O banks requiring up to 3A.
Battery-Powered Devices
Extending runtime in handheld electronics due to low quiescent current and 100 percent duty cycle capability in dropout.
Optical Modules
Fitting into tight form factors like SFP modules thanks to the compact TSOT23-8 package.

Key Specifications

Function Step-Down
Topology Buck
Output Type Adjustable
Mounting Type Surface Mount
Package / Case SOT-23-8 Thin, TSOT-23-8
Current - Output 3A
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 1.2MHz
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier Yes
Voltage - Input (Max) 5.5V
Voltage - Input (Min) 2.5V
Voltage - Output (Max) 5V
Supplier Device Package TSOT-23-8
Voltage - Output (Min/Fixed) 0.6V

Getting Started

To evaluate this part, use the EV2143-J-00A evaluation board which provides a pre-configured layout for testing transient response and efficiency. When designing a custom PCB, place the input capacitor as close to the VIN and GND pins as possible to minimize high-frequency switching noise. Ensure the feedback resistors are placed away from the switching node to maintain regulation accuracy.

Categories

Power Management > Switching Regulators