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Monolithic Power Systems Inc. MEZD71202A-F
- Part No.:
- MEZD71202A-F
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD71202A-F.pdf
- Description:
- DC DC CONVERTER 3.3V
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
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Product details
Overview
MEZD71202A-F from Monolithic Power Systems is a 4.5V–24V input, 3.3V output, 2A synchronous step-down DC/DC power supply module with integrated inductor, FCQFN3x3-16 package, ±2.5% output voltage accuracy, and hiccup-mode short-circuit protection - used in industrial I/O modules requiring compact, pre-validated 3.3V rail generation.
For engineers reviewing the MEZD71202A-F datasheet, MEZD71202A-F pinout, MEZD71202A-F application, or MEZD71202A-F equivalent, key selection criteria include input voltage range (4.5–24V), output current capability (2A continuous), thermal derating above 85°C ambient, and compatibility with DIY board layout files provided by MPS.
Technical Context
This module integrates a controller, power MOSFETs, and a 3.3µH shielded inductor in a single FCQFN3x3-16 package. It operates at a fixed 400kHz switching frequency and uses internal compensation to simplify design while maintaining ±1% line and load regulation at 3.3V output.
The device implements over-temperature protection (trip at 150°C), over-current protection, and hiccup-mode recovery on short-circuit events. Input under-voltage lockout ensures operation only when VIN exceeds VOUT + 1V, supporting stable 3.3V output across its full 4.5–24V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide industrial input rails including 12V and 24V systems without external pre-regulation. |
| Output Voltage | 3.3V (fixed via F option) - factory-set, no external resistor network required for regulation. |
| Max Output Current | 2A continuous - delivers full rated current up to 85°C ambient with natural convection cooling. |
| Output Voltage Accuracy | ±2.5% (typ.) - ensures reliable logic-level compliance for 3.3V microcontrollers and FPGAs. |
| Switching Frequency | 400kHz (typ.) - balances EMI performance and inductor size; enables use of compact 3.3µH integrated inductor. |
| Protections | Hiccup short-circuit, OTP (150°C), OVP/UVP - autonomous fault recovery without system-level intervention. |
| Efficiency @ 12V→3.3V/2A | ~89% - measured value enables thermal management without forced airflow in sealed enclosures. |
Pinout & Package
Package: FCQFN3x3-16, 3mm × 3mm × 1.7mm, exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 4.5–24V; requires local 0.22µF ceramic decoupling per datasheet layout. |
| 2 (GND) | Power Ground | Primary PGND connection; tied directly to thermal pad for low-impedance return path. |
| 3 (VOUT) | Regulated Output | Delivers 3.3V/2A; requires 22µF X7T/X5R ceramic output capacitance per reference design. |
| 4–16 | Thermal Pad / NC | Pins 4–16 are internally connected to exposed thermal pad or no-connect; must be soldered to PCB copper for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor | 3.3µH, 4.1A saturation current - eliminates external magnetics and reduces BOM count by 3–5 components. |
| Open Design Files | Gerber, schematic, and BOM publicly available - accelerates validation and custom layout integration. |
| Natural Convection Operation | Full 2A output at ≤85°C ambient - removes need for heatsinks or fans in space-constrained industrial designs. |
| Fixed-Frequency Control | 400kHz constant switching - simplifies EMI filtering and avoids variable-frequency noise spread. |
| Hiccup Short-Circuit Recovery | Auto-restart after fault clearance - maintains system uptime without manual reset or host intervention. |
Applications
| Programmable Logic Controller (PLC) I/O Module | Industrial Ethernet Gateway |
|---|---|
Use Scenario: Powering isolated 3.3V digital logic and RS-485 transceivers in DIN-rail mounted PLC backplanes. IC Role / Device Role / Timing Role: Primary 3.3V point-of-load regulator delivering clean, regulated power to FPGA configuration circuitry and communication PHYs. Use Value: ±2.5% output accuracy and <34mV ripple ensure reliable SPI/I²C timing margins and UART signal integrity at 10 Mbps. | Use Scenario: Generating 3.3V rail for ARM Cortex-M7-based gateways connecting Modbus TCP, PROFINET, and MQTT endpoints. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC stage supplying core voltage to dual-core MCU and Ethernet MAC/PHY silicon. Use Value: 2A capacity supports burst-mode packet processing; hiccup protection prevents latch-up during transient cable ESD events. |
| Factory Automation Sensor Hub | Smart Energy Meter Interface Board |
Use Scenario: Powering multi-sensor fusion boards (temperature, vibration, current) deployed in motor control cabinets. IC Role / Device Role / Timing Role: Single-component 3.3V source for ADC front-ends, low-power wireless SoCs (e.g., nRF52840), and isolated CAN transceivers. Use Value: Wide 4.5–24V input accommodates fluctuating 24V DC bus; -40°C to +85°C rating matches industrial enclosure thermal profiles. | Use Scenario: Providing regulated 3.3V to metrology ADCs, secure element ICs, and optical IR comms in Class 0.5S revenue-grade meters. IC Role / Device Role / Timing Role: Precision power stage ensuring stable reference voltage for 24-bit sigma-delta ADCs and cryptographic co-processors. Use Value: ±1% load regulation preserves ADC LSB accuracy across 0–2A dynamic current steps; low ripple minimizes quantization noise floor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530 | Successor product: same FCQFN3x3-16 package, 4.5–24V input, 2A, but with improved efficiency (up to 93%) and lower ripple (22mV). | Pin-compatible drop-in replacement with enhanced thermal performance and extended lifecycle support. | Select MPM3530 for new designs requiring longer-term availability and tighter output stability. |
| TSM12202 | Competing 2A module: 4.5–18V input, 3.3V fixed, but uses different pinout (no thermal pad tie-down requirement) and lacks hiccup-mode SC protection. | Requires PCB redesign; suitable where simplified thermal layout outweighs fault-recovery requirements. | Choose TSM12202 only if board re-spin is acceptable and hiccup recovery is not critical. |
Compared with MPM3530, MEZD71202A-F offers identical footprint and function but lower efficiency and higher ripple; versus TSM12202, it provides superior fault resilience and wider input range at the cost of stricter thermal pad implementation.
Availability
MEZD71202A-F is available at Aetrix Electronics and suitable for industrial automation, factory sensor networks, and smart metering applications requiring stable component supply despite end-of-life status.
Supply support for MEZD71202A-F 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 modules for industrial, automotive, and computing markets.
The mEZD71202A series belongs to MPS's ready-to-use DC/DC module product line, designed to eliminate power design risk in space- and time-constrained industrial applications through pre-validated layouts and open-source hardware.
FAQ
Is MEZD71202A-F still in production?
No - MEZD71202A-F is officially marked End-of-Life by Monolithic Power Systems as of Rev. 1.4 (2018). Aetrix Electronics maintains limited legacy stock and supports last-time buys with full traceability and documentation. Customers are advised to migrate to the pin-compatible MPM3530 for new designs.
What is the recommended input capacitor for MEZD71202A-F?
The datasheet specifies a 0.22µF X5R ceramic capacitor (0402) placed directly at the VIN pin. This value is optimized for high-frequency noise suppression and loop stability with the internal 400kHz controller. Larger bulk capacitance (e.g., 10µF) may be added upstream but does not replace the mandatory 0.22µF local decoupling.
Does MEZD71202A-F require external feedback resistors?
No - MEZD71202A-F is a fixed-output variant (3.3V, denoted by suffix 'F'). The output voltage is factory-programmed; no external resistor divider or compensation network is needed. This eliminates tuning errors and improves long-term output stability versus adjustable modules.
Can MEZD71202A-F operate at full 2A output above 85°C ambient?
No - the module is rated for 2A continuous output only up to +85°C ambient temperature under natural convection. Above this, derating applies: output power drops linearly to zero at +125°C. Forced airflow or heatsinking extends usable current but requires validation per the published power derating curve.
What is the purpose of the exposed thermal pad on the FCQFN3x3-16 package?
It serves as the primary thermal and electrical ground path for the internal power stage. Per MPS layout guidelines, the pad must be fully soldered to ≥2cm² of inner-layer copper pour connected to GND. Inadequate thermal pad soldering causes immediate thermal shutdown or premature failure under sustained 2A load.
Where can I obtain Gerber files and BOM for the DIY71202-AX reference board?
Monolithic Power Systems provides full open-design files including Gerbers, schematics, and BOMs for the DIY71202-AX board via direct request to [email protected]. These files are licensed for commercial use and include IPC-7351-compliant footprints and validated stack-up recommendations.
MEZD71202A-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 3-SIP Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Linear Regulator Replacement
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 24V
- Voltage - Output 1:
- 3.3V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 2A
- 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:
- -
MEZD71202A-F FAQ
1.How can I place an order for MEZD71202A-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD71202A-F 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 MEZD71202A-F reliable?
The price and inventory of MEZD71202A-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD71202A-F is usually 5 days.
3.What payment methods are accepted for MEZD71202A-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD71202A-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD71202A-F?
MEZD71202A-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD71202A-F 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 MEZD71202A-F?
For technical support, including MEZD71202A-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD71202A-F requirements.
6.How does Aetrix verify that MEZD71202A-F is sourced from the original manufacturer or authorized distributors?
All MEZD71202A-F 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 MEZD71202A-F meets industry standards.
7.What is the process for return or replacement of MEZD71202A-F?
All MEZD71202A-F units undergo pre-shipment inspection (PSI). If there is an issue with MEZD71202A-F, 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 MEZD71202A-F part is unused and in its original packaging.
Return procedure for MEZD71202A-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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