MP21148GQD-Z

MP21148GQD-Z is a synchronous buck DC-DC regulator IC from Monolithic Power Systems. It’s designed to convert a higher input voltage down to a stable, lower output with high efficiency for point‑of‑load power in digital systems (CPUs, GPUs, embedded boards, etc.).
Key points:
- Integrates high‑ and low‑side MOSFETs and control logic for a compact solution.
- Adjustable output via feedback resistors; uses current‑mode PWM control.
- Built‑in protections: overcurrent, undervoltage/overvoltage, overtemperature/thermal shutdown.
- Package variant GQD in a RoHS-compliant -Z lead‑free QFN package.
Typical use: regulate core rails and other low‑voltage rails in power management circuits. For exact electrical specs (input range, max output current, switching frequency, soft‑start details), consult the latest MP21148GQD‑Z datasheet.

Direct one-to-one equivalents aren’t published. MP21148GQD‑Z is a 40 V input, high‑current synchronous buck regulator (MPS). For substitutes, consider other 40 V, ~4 A synchronous buck regulators from TI, Renesas, Analog Devices, or Richtek. To give precise cross‑references, please provide the desired output voltage, current, switching frequency, and package.

MP21148GQD-Z Features (concise)
- High-efficiency, synchronous buck regulator with integrated high-side/low-side MOSFETs
- Wide input voltage range suitable for DC rails
- Adjustable output via external feedback network
- Programmable switching frequency for trade-off between size and efficiency
- Fast transient response with good load regulation
- Integrated protections: UVLO, overvoltage protection, overcurrent (cycle-by-cycle), thermal shutdown
- Soft-start and enable pin; power-good/rail status signaling
- RoHS-compliant, small QFN16 (GQD-Z) package
- Suitable for VRMs, power rails in processors, VGA, and other high-performance DC-DC applications
Note: For exact electrical specs ( voltage ranges, current capability, and programming details ), please consult the MP21148GQD-Z datasheet.

Pin count: 8 pins in a QFN package (with exposed pad).
Function: High-efficiency synchronous buck DC-DC converter (step-down voltage regulator).

- Manufacturer: Monolithic Power Systems (MPS).
- Company type: A fabless semiconductor company that designs and markets high-performance analog and mixed-signal power-management integrated circuits (PMICs, DC-DC converters, controllers, etc.).

MP21148GQD-Z is used as a high-current multi-phase buck regulator. Typical application areas include:
- CPU/GPU core voltage regulators (VRMs) in desktops and servers
- Memory and chipset power rails
- FPGA/ASIC core rails and other high-current rails
- Point-of-load regulators on motherboards, graphics cards, servers
- Telecom, networking, storage equipment and data-center power supplies
- Embedded/industrial systems requiring efficient multi-phase VRMs
These cover high-demand, low-variation supply needs in modern high-performance electronics.

MP21148GQD-Z uses a QFN package (Green QFN, GQFN style), typically 4x4 mm with 28 pins.