MP2499AGQB-Z

MP2499AGQB-Z is Monolithic Power Systems’ synchronous buck regulator IC with integrated high- and low-side MOSFETs. It’s designed for efficient DC-DC power conversion, suitable for applications like CPU/GPU rails, memory, telecom, and other low-voltage/high-current rails.
Key points
- Synchronous buck converter with integrated FETs
- Current-mode PWM control
- Programmable switching frequency
- Soft-start and enable control
- Protections: overcurrent/short-circuit, overtemperature, overvoltage
- RoHS-compliant QFN package (suffix -Z indicates the package variant)
As with most buck regulators, it requires external passive components: inductor, input/output capacitors, feedback resistors, and a compensation network.
For exact electrical specs, pinout, package details, and typical application circuits, refer to the MP2499AGQB-Z datasheet on the Monolithic Power Systems website.

- Pin count: 28 pins (QFN package)
- Function: Synchronous buck DC-DC regulator controller with integrated high-side/low-side gate drivers (used to drive a switching regulator).

- Manufacturer: Monolithic Power Systems, Inc. (MPS).
- What kind of company: A fabless semiconductor company that designs and markets high-performance analog and mixed-signal integrated circuits, especially power-management ICs, outsourcing fabrication to foundries.

Applications for MP2499AGQB-Z (concise):
- CPU/GPU voltage regulator modules (VRMs) and multi‑phase DC‑DC power stages
- Notebook and portable computer power rails
- Desktop/server multi‑rail DC‑DC converters
- Automotive 12V DC‑DC converters and battery charging stages
- Industrial and telecom equipment power supplies requiring high efficiency and fast transient response

Quad Flat No-Lead (QFN) package.