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Monolithic Power Systems Inc. MEZD71203A-D
- Part No.:
- MEZD71203A-D
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD71203A-D.pdf
- Description:
- DC DC CONVERTER 1.8V
- Quantity:
- Payment:
- Shipping:
Inventory:1,303
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Product details
Overview
MEZD71203A-D from Monolithic Power Systems is a 5V–16V input, 3A synchronous step-down DC/DC power supply module with fixed 1.8V output, FCQFN3x3-16 package, ±2.5% output voltage accuracy, hiccup-mode short-circuit protection, and -40°C to +85°C operating temperature range-used in industrial control power rails and embedded FPGA core supplies.
For engineers reviewing the MEZD71203A-D datasheet, MEZD71203A-D pinout, MEZD71203A-D application, or MEZD71203A-D equivalent, key selection factors include input voltage margin (VIN > VOUT +1V), load regulation (±1% typ.), switching frequency (400kHz), thermal derating above 85°C ambient, and compatibility with 0402/0805/1206 passive footprints in DIY board integration.
Technical Context
The MEZD71203A-D integrates a controller, power MOSFETs, and compensation network into a fully shielded FCQFN module. It operates in forced PWM mode with internal 400kHz oscillator and supports output voltages selectable via part number suffix (D = 1.8V).
It implements cycle-by-cycle over-current protection, thermal shutdown at 150°C, and hiccup-mode response to sustained short circuits. Input-to-output voltage differential must exceed 1V for stable regulation across the full 5–16V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 16V - supports 12V industrial bus and 5V/9V adapter inputs with ≥1V headroom over output |
| Output Voltage | 1.8V fixed - matches I/O voltage of LPDDR2/LPDDR3 memory and low-voltage FPGA banks |
| Max Output Current | 3A continuous - sustains full load at 85°C ambient with natural convection cooling |
| Output Voltage Accuracy | ±2.5% (typ.) - ensures compliance with 1.8V ±5% supply tolerance for JEDEC-compliant interfaces |
| Switching Frequency | 400kHz (typ.) - enables use of compact 3.3µH shielded inductors and reduces EMI filtering burden |
| Protections | Hiccup short-circuit, OTP (150°C), OVP/UVP - latches off during fault and auto-recovers after cooldown |
| Efficiency @ 12VIN/1.8VOUT | 87% at 1.5A - minimizes thermal rise in enclosed enclosures without forced airflow |
Pinout & Package
FCQFN3x3-16 package with exposed thermal pad (bottom-side GND connection); 3.0mm × 3.0mm footprint, 0.5mm pitch, 0.8mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 5–16V; requires local 0.22µF ceramic bypass adjacent to pin |
| 2 (GND) | Power Ground | Primary PGND return for high-current switch node; connects to thermal pad |
| 3 (VOUT) | Regulated Output | Delivers up to 3A at 1.8V; requires 22µF X7T/X5R ceramic output capacitance |
| 4–16 | No-connect / Thermal Pad Tie | Internally connected to GND or unused; must be soldered to PCB ground plane for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Buck Topology | Eliminates external high-side/low-side MOSFETs and gate drivers-reduces BOM count by ≥8 components |
| Open Design Files & BOM | Gerber files, schematic, and validated bill-of-materials provided for DIY layout reuse and compliance verification |
| Wide Input Range (5–16V) | Supports single-rail operation across 5V USB-PD, 9V wall adapters, and 12V industrial buses without re-design |
| Hiccup Short-Circuit Protection | Prevents thermal runaway during sustained faults-limits average power dissipation to safe levels |
| Thermal Derating Curve | Linear power reduction from 100% at 25°C to 0% at 125°C ambient-enables predictable system-level thermal margining |
Applications
| Industrial PLC I/O Power | FPGA Core & I/O Bank Supply |
|---|---|
Use Scenario: Powering isolated digital I/O modules in programmable logic controllers with 12V backplane input. IC Role / Device Role / Timing Role: Primary 1.8V point-of-load regulator delivering clean, regulated power to 24-channel digital isolators and level shifters. Use Value: ±2.5% output accuracy and ±1% load regulation ensure reliable logic-level translation across temperature and load transients. | Use Scenario: Supplying dual-rail power to Xilinx Artix-7 FPGA: 1.8V for SelectIO banks interfacing with DDR3 memory. IC Role / Device Role / Timing Role: Fixed-output buck module providing low-noise, fast-transient 1.8V rail synchronized to FPGA configuration sequence. Use Value: 0.8ms typical rise time and 30.4mV ripple at full load meet Xilinx DC and AC switching specifications for I/O banks. |
| Medical Sensor Hub Power | Automotive Infotainment MCU Core |
Use Scenario: Powering multi-sensor fusion nodes (accelerometer, gyroscope, temperature) in portable diagnostic devices. IC Role / Device Role / Timing Role: Compact, shielded DC/DC module supplying 1.8V to ultra-low-power microcontrollers and analog front-ends. Use Value: FCQFN3x3-16 footprint and natural-convection thermal design eliminate need for heatsinks in space-constrained enclosures. | Use Scenario: Providing 1.8V core supply to Renesas R-Car H3 SoC in automotive infotainment head units with 12V battery input. IC Role / Device Role / Timing Role: Robust POL regulator handling cold-crank (5V) and load-dump (16V) conditions while maintaining 1.8V stability. Use Value: Input range (5–16V) and hiccup protection enable direct connection to vehicle battery without pre-regulator stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output synchronous buck module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530DQV-1.8 | Same 1.8V output, 3A rating, but 4.5–18V input range and 1.2MHz switching frequency | Higher frequency enables smaller inductor (1.5µH), but increases EMI sensitivity in noise-critical sensor systems | Select when board space is constrained and higher-frequency filtering is acceptable |
| mEZD71203A-F | Identical platform, same package and specs, but 3.3V output instead of 1.8V | Used for MCU I/O or communication interface rails-not substitutable without redesigning feedback network | Choose only if system requires 3.3V output; not a drop-in replacement for 1.8V use case |
Compared with MPM3530DQV-1.8, MEZD71203A-D offers lower EMI and relaxed input capacitor requirements due to 400kHz operation, while mEZD71203A-F shares identical thermal and layout behavior but serves distinct voltage domains-neither replaces the 1.8V variant without electrical or mechanical revalidation.
Availability
MEZD71203A-D is available at Aetrix Electronics and suitable for industrial PLC I/O power, FPGA I/O bank supply, and medical sensor hub power requiring stable component supply through extended production cycles.
Supply support for MEZD71203A-D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs and integrated power modules for industrial, computing, and automotive markets.
The mEZD71203A series targets rapid prototyping and small-volume production of compact, reliable DC/DC solutions-designed to reduce layout risk and accelerate time-to-power in embedded systems with tight space and thermal budgets.
FAQ
Is MEZD71203A-D still in active production?
No-MEZD71203A-D is End-of-Life per Monolithic Power Systems' official notice. Aetrix Electronics maintains limited legacy stock and supports transition to MPM3530DQV-1.8 with full cross-reference documentation, layout adaptation guidance, and sample availability for qualification testing.
What is the recommended input capacitor configuration?
The datasheet specifies a 0.22µF X5R ceramic capacitor (0402) placed directly at the VIN pin, plus bulk capacitance upstream. This local high-frequency bypass suppresses switching noise injection into the input rail and stabilizes the internal bootstrap circuit during high di/dt transitions.
Can MEZD71203A-D be used with 5V input at full 3A load?
Yes-5V input is supported, but output voltage must be ≥1V per the VIN > VOUT +1V requirement. At 5VIN/1.8VOUT, efficiency drops to ~78% at 3A, increasing thermal stress; derating to 2.5A is recommended for continuous operation above 60°C ambient.
Does the module require external feedback resistors?
No-MEZD71203A-D is a fixed-output device. The 1.8V regulation is internally trimmed and factory-set; no external resistor divider or compensation network is needed, simplifying layout and eliminating tuning errors.
How is thermal performance verified on the PCB?
Thermal validation requires soldering the exposed thermal pad to a minimum 100mm² copper pour on the PCB's inner or bottom layer, connected via ≥6 thermal vias (0.3mm diameter). Measured case temperature must stay ≤115°C at full load and 85°C ambient per the published derating curve.
What does "Do-It-Yourself" mean in the mEZ product family?
"Do-It-Yourself" refers to Monolithic Power's open-design approach: complete Gerber files, schematic, BOM, and layout guidelines are publicly provided, enabling customers to manufacture, modify, and certify the module themselves-without NDA or licensing restrictions.
Is there an enable pin or power-good signal?
No-MEZD71203A-D has no EN or PG pins. It powers up automatically when VIN exceeds UVLO threshold (~4.3V). Output voltage ramp is controlled internally (0.8ms typical rise time), and no external sequencing or monitoring signals are provided.
MEZD71203A-D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 3-SIP Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Linear Regulator Replacement
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 5V
- Voltage - Input (Max):
- 16V
- Voltage - Output 1:
- 1.8V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 3A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OCP, OTP, OVP, SCP, UVLO
- Operating Temperature:
- -40°C ~ 85°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MEZD71203A-D FAQ
1.How can I place an order for MEZD71203A-D through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD71203A-D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MEZD71203A-D reliable?
The price and inventory of MEZD71203A-D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD71203A-D is usually 5 days.
3.What payment methods are accepted for MEZD71203A-D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD71203A-D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD71203A-D?
MEZD71203A-D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD71203A-D order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MEZD71203A-D?
For technical support, including MEZD71203A-D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD71203A-D requirements.
6.How does Aetrix verify that MEZD71203A-D is sourced from the original manufacturer or authorized distributors?
All MEZD71203A-D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MEZD71203A-D meets industry standards.
7.What is the process for return or replacement of MEZD71203A-D?
All MEZD71203A-D units undergo pre-shipment inspection (PSI). If there is an issue with MEZD71203A-D, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MEZD71203A-D part is unused and in its original packaging.
Return procedure for MEZD71203A-D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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