The MPM3515GQV-Z from Monolithic Power Systems is a highly integrated synchronous step-down power module with built-in high-side and low-side power MOSFETs, an integrated inductor, and internal capacitors. MPS states that only a small number of external components are required to build a complete 1.5A step-down power supply, reducing PCB area and simplifying power design.
The module operates from a wide 4V to 36V input range and provides an adjustable output starting at 0.8V. It uses fixed-frequency peak-current-mode control with a nominal 2.2MHz switching frequency, supporting compact power components and fast load-transient response.
Integrated high-side and low-side MOSFETs provide typical on-resistances of 90mΩ and 50mΩ, respectively. The device operates in forced continuous-conduction mode (CCM) and supports external synchronization from 450kHz to 2.2MHz.
At higher input voltages, the MPM3515 supports frequency foldback, reducing switching frequency to approximately 1.1MHz when VIN exceeds about 21V. Frequency foldback is also used during soft-start and short-circuit conditions.
Protection and monitoring functions include an open-drain Power Good output, UVLO, valley-current over-current protection, hiccup protection, soft-start, and thermal shutdown. The feedback reference is typically 0.807V, and the typical thermal-shutdown threshold is approximately 170°C.
The recommended operating junction-temperature range is -40°C to +125°C, with a 150°C absolute maximum junction temperature.
The exact MPM3515GQV-Z is supplied in a compact 17-pin QFN package measuring 3 × 5 × 1.6mm. The -Z suffix indicates tape-and-reel packaging, and MPS currently lists 2500 pieces per reel. The exact part is included among MPS’s current Active Part Numbers.
Key Specifications:
- Brand: Monolithic Power Systems / MPS
- Part Number: MPM3515GQV-Z
- Product Type: Synchronous Step-Down Power Module
- Topology: Synchronous Buck
- Input Voltage: 4V to 36V
- Continuous Output Current: 1.5A
- Adjustable Output Voltage: From 0.8V
- Control Mode: Peak Current Mode
- Switching Frequency: 2.2MHz
- Synchronization Range: 450kHz to 2.2MHz
- Frequency Foldback: Yes
- Forced CCM: Yes
- High-Side RDS(on): 90mΩ Typ
- Low-Side RDS(on): 50mΩ Typ
- Integrated Inductor: 2.2µH
- Inductor DCR: 75mΩ Typ
- Feedback Reference: 0.807V Typ
- Maximum Duty Cycle: 85% Typ
- Peak Current Limit: 4A Typ
- Valley Current Limit: 2.5A Typ
- Quiescent Current: 0.6mA Typ
- Shutdown Current: 8µA Typ
- Power Good: Yes
- UVLO: Yes
- Over-Current Protection: Yes
- Hiccup Protection: Yes
- Thermal Shutdown: Yes
- Thermal Shutdown Threshold: 170°C Typ
- Soft-Start: 1.7ms Typ
- Operating Junction Temperature: -40°C to +125°C
- Maximum Junction Temperature: 150°C
- HBM ESD: ±2kV
- CDM ESD: ±750V
- Package: QFN-17
- Package Size: 3 × 5 × 1.6mm
- Mounting: SMD / SMT
- Packaging: Tape & Reel
- Reel Quantity: 2500 pcs
- Lead-Free: Yes
- Halogen-Free: Yes
- RoHS Compliant: Yes
- Product Status: Active.
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