MP6543GL-Z

MP6543GL-Z is a high-performance DC-DC buck regulator IC from Monolithic Power Systems (MPS), part of the MP654x family. It is designed to convert a higher input voltage to a stable, lower output rail with high efficiency for core and peripheral power in electronics.
Key features (typical):
- Integrated high-side and low-side MOSFETs with current-mode PWM control
- Adjustable output via external feedback network
- Enable/shutdown, soft-start, over‑current protection, and thermal shutdown
- Wide input range and high switching frequency for compact external components
- RoHS-compliant, with packaging/version denoted by the GL/Z suffix
Applications:
- CPU/GPU/FPGAs and memory rails
- Telecom/networking power supplies
- Automotive and embedded systems requiring efficient DC-DC conversion
Notes:
- For exact specs (Vin range, Vout range, max load current, efficiency, pinout), consult the latest MP6543GL-Z datasheet. The suffix relates to packaging/version and may vary.

Here are the typical features of MP6543GL-Z (Monolithic Power Systems synchronous buck regulator):
- High-efficiency synchronous buck regulator
- Wide input voltage range
- Adjustable output via external feedback
- Integrated high-side and low-side MOSFETs
- Current-mode control for fast transient response
- Fixed-frequency PWM operation with soft-start
- Over-current/short-circuit protection
- Over-temperature protection
- Over-voltage protection
- Undervoltage lockout (UVLO)
- Enable/shutdown control
- Lead-free/green package (GL) in a small footprint
Note: exact specs (voltage ranges, output limits, switching frequency) vary by revision; consult the latest datasheet for precise values.

Pin count: 8 pins.
Function: MP6543GL-Z is an 8-pin buck switching regulator (step-down DC‑DC converter) with an integrated switching element, used to regulate input voltage down to a stable output via feedback and enable pins.

MP6543GL-Z is manufactured by Monolithic Power Systems (MPS). MPS is a fabless semiconductor company that designs and markets analog and mixed-signal power-management integrated circuits for computing, communications, consumer, and automotive applications.

MP6543GL-Z is a high-efficiency synchronous buck regulator. Typical application areas:
- Point-of-load (POL) rails for CPUs, GPUs, FPGAs, and ASICs
- Portable and battery-powered devices needing 1.0–5.0 V rails
- Embedded systems and single-board computers
- Networking and telecom equipment (switches, routers)
- Industrial control and automation power management
- Automotive electronics for onboard power regulation
Its small footprint and efficiency make it suitable for compact DC-DC converters across these domains.

MP6543GL‑Z uses a 16‑pin QFN package with an exposed pad (4×4 mm body).