MP2483DS-LF-Z

MP2483DS-LF-Z is Monolithic Power Systems’ high-efficiency synchronous buck regulator. It is a DC-DC step-down converter with integrated high-side and low-side MOSFETs, designed to convert a higher input bus (typical automotive/industrial ranges) down to a stable lower rail.
Key points
- Input range and output: supports a broad input window and adjustable output via an external feedback network.
- Control and performance: uses current-mode control for fast transient response and good loop stability.
- Protections and features: includes undervoltage lockout, overcurrent/short-circuit protection, thermal shutdown, soft-start, and an enable input (often with a Power-Good indication in some variants).
- Packaging: LF lead-free variant; -Z denotes packaging/tape options.
- Applications: suitable for point-of-load rails in CPUs/GPUs, telecom/industrial power supplies, and automotive electronics.
For exact pinout, electrical specs, recommended external components, and evaluation boards, refer to the MP2483DS-LF-Z data sheet on MPS’ website.

Here are the core features of MP2483DS-LF-Z:
- Wide input range suitable for automotive and standard rails (high voltage tolerance)
- Synchronous buck with integrated high-side and low-side MOSFETs
- Adjustable output via external feedback network
- Fixed-frequency operation with high efficiency (PWM/PFM modes for light load)
- Enable pin with soft-start and output voltage ramp control
- Protective functions: undervoltage lockout, overvoltage protection, cycle-by-cycle current limit, and thermal shutdown
- Compact, lead-free (LF) Z-pack packaging
- External inductor and components required for a complete buck converter
Note: Verify exact voltage ranges and current specs from the datasheet for your design.

MP2483DS-LF-Z uses an 8-pin DFN package (3.0 × 3.0 mm), lead-free (LF), RoHS-compliant.

- Pin count: 8 pins in an DFN-8 (3×3 mm) package with an exposed pad (GND).
- Function: High-efficiency buck regulator with an integrated high-side MOSFET. Inputs: VIN; outputs: SW (switch node to the inductor), GND. Control/auxiliary pins include EN (enable), FB (output feedback), BST (bootstrap for gate drive), and SS/COMP (soft-start/compensation). The exposed pad is typically ground for thermal/contacts.

Manufacturer: Monolithic Power Systems, Inc. (MPS).
What kind of company: A fabless semiconductor company that designs and markets high-performance power-management ICs (e.g., DC-DC converters, regulators) for consumer, automotive, and industrial applications.

MP2483DS-LF-Z is a high‑efficiency synchronous buck regulator. Typical applications: automotive electrical systems (12–24V), industrial and telecom equipment, consumer electronics, and embedded systems. It generates local low-voltage rails (e.g., 3.3V/5V) from higher inputs, used for motherboard VRMs, FPGA/DSP power rails, set‑top boxes, servers, and compact/power-modules in rugged or solar-powered applications.

There isn’t an official one-to-one cross reference published. MP2483DS-LF-Z is a 3 A high-voltage buck regulator; functionally similar substitutes from other vendors include:
- TI TPS5430/TPS54331
- Richtek RT8250/RT8251
- Analog Devices ADP2302/ADP2303
- Intersil ISL85410
Note: pinouts, voltage ranges and packages differ—use datasheet cross-reference tools or compare specs (output current, input voltage, switching freq) to choose a suitable substitute.