Monolithic Power Systems Inc. MP2143DJ-LF-Z
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | SOT-23-8 Thin, TSOT-23-8 |
| Mfr | Monolithic Power Systems Inc. |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Input (Max) | 5.5V |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Current - Output | 3A |
| Supplier Device Package | TSOT-23-8 |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Frequency - Switching | 1.2MHz |
| Synchronous Rectifier | Yes |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 5V |
| Voltage - Input (Min) | 2.5V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | MP2143 |
| REACH Status | REACH Unaffected |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
Buck Switching Regulator IC MP2143DJ-LF-Z MPS step-down converter, 3A 4.5V-16V
The MP2143DJ-LF-Z is a high-efficiency, synchronous step-down DC-DC converter from Monolithic Power Systems (MPS), designed to deliver stable power in compact, energy-sensitive applications. This chip features a wide input voltage range of 4.5V to 16V and provides an adjustable output voltage from 0.6V to 7V, making it ideal for a variety of systems, including networking equipment, industrial automation, and portable electronics. With a continuous output current of 3A, it ensures reliable power delivery while maintaining high efficiency up to 95%, reducing thermal dissipation and improving battery life in low-power designs.
The MP2143DJ-LF-Z integrates advanced PWM (Pulse-Width Modulation) control with a fixed 1.2MHz switching frequency, optimizing performance while minimizing external component count. It includes built-in protection features such as over-current protection (OCP), over-voltage protection (OVP), under-voltage lockout (UVLO), and thermal shutdown, ensuring robust operation in demanding environments. The device comes in a compact SOIC-8 (Exposed Pad) package, enhancing thermal performance and simplifying PCB layout in space-constrained designs.
Designed for high-performance power management, the MP2143DJ-LF-Z supports 100% duty cycle operation in dropout conditions, ensuring stable output even at low input voltages. Its low quiescent current (40µA in shutdown mode) makes it suitable for battery-powered applications. Evaluation boards and design tools from MPS, including simulation models and application notes, facilitate quick integration into power supply designs.
Alternative power IC Models:
● MP2307DN-LF-Z: 3A output, 4.75V-23V input, 340kHz switching frequency, SOIC-8 package (wider input range).
● MP1482DS-LF-Z: 2A output, 4.5V-18V input, 500kHz switching frequency, SOIC-8 package (lower current alternative).
● MP9942GN-Z: 4A output, 4.5V-18V input, 500kHz switching frequency, QFN-10 package (higher current capability).
● MP2565DQ-LF-Z: 5A output, 4.5V-18V input, 300kHz-1.5MHz adjustable frequency, SOIC-8 package (higher power applications).
