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Monolithic Power Systems Inc. MEZD71201A-G
- Part No.:
- MEZD71201A-G
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD71201A-G.pdf
- Description:
- DC DC CONVERTER 5V
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
MEZD71201A-G from Monolithic Power Systems is a 4.5V–24V input, 5.0V output, 1A synchronous step-down DC/DC power supply module with integrated inductor, housed in a FCQFN3x3-16 package. It delivers ±2.5% output voltage accuracy, 400kHz switching frequency, hiccup-mode short-circuit protection, and operates across –40°C to +85°C ambient. Used in industrial control I/O modules requiring compact, pre-validated 5V rail generation.
For engineers reviewing the MEZD71201A-G datasheet, MEZD71201A-G pinout, MEZD71201A-G application, or MEZD71201A-G equivalent, key selection criteria include input voltage range (4.5–24V), fixed 5.0V output, thermal derating behavior above 65°C, hiccup-mode fault response, and compatibility with 0402/0805/1206 passive footprints in DIY layouts.
Technical Context
This module implements a fully integrated buck converter with internal high-side and low-side MOSFETs, bootstrap circuitry, and PWM controller. It uses constant-on-time (COT) control for fast transient response and stable operation without external compensation.
The FCQFN3x3-16 package integrates a 4.7µH shielded inductor and supports natural-convection cooling up to 100% load at 25°C ambient; power derating begins at 65°C per published curves. Output voltage is factory-set to 5.0V via internal resistor divider (G option).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - Supports 5V, 12V, and 24V industrial bus rails without external pre-regulation. |
| Output Voltage | 5.0V (fixed, G-option) - Factory-trimmed ±2.5% accuracy enables direct replacement of linear regulators in 5V logic domains. |
| Max Output Current | 1A continuous - Sustains full load at 25°C ambient; derates linearly to zero at 125°C case temperature. |
| Switching Frequency | 400kHz typical - Enables use of compact 4.7µH inductor and reduces EMI filtering burden vs. lower-frequency converters. |
| Protections | Hiccup-mode short-circuit, over-temperature (150°C trip), over-voltage, under-voltage - Limits fault energy and enables safe auto-recovery without system latch-up. |
| Output Ripple | 28mVpp @ 12VIN, 3.3VOUT, full load - Measured peak-to-peak noise level defines required downstream capacitance for noise-sensitive analog circuits. |
| Efficiency | 95% @ 12VIN, 5VOUT, 0.5A - Peak efficiency point informs thermal design margin and battery runtime estimation in portable systems. |
Pinout & Package
FCQFN3x3-16 package with wettable flank leads, 0.5mm pitch, exposed thermal pad. Dimensions: 3.0mm × 3.0mm × 1.8mm (max height). Thermal pad must be soldered to PCB ground plane for rated current and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 4.5–24V unregulated input; requires local 0.22µF ceramic decoupling adjacent to pin. |
| 2 (GND) | Power Ground | Primary return path for high-current switch node; connects directly to thermal pad and input/output capacitors. |
| 3 (VOUT) | Regulated Output | Delivers 5.0V ±2.5%; requires 22µF X7T/X5R ceramic output capacitance for stability and ripple suppression. |
| 4–16 | Thermal Pad / NC | Pins 4–15 are no-connect; Pin 16 is tied internally to GND and serves as secondary thermal relief path. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor | 4.7µH shielded power inductor co-packaged - Eliminates external magnetics, reduces layout sensitivity, and ensures consistent EMI performance. |
| Open Design Files | Gerber, BOM, and schematic available - Enables rapid customization, compliance validation, and failure analysis without NDA restrictions. |
| Natural Convection Cooling | Rated for 1A at 25°C ambient with no airflow - Simplifies thermal design in sealed enclosures and avoids fan-related reliability risks. |
| Hiccup Short-Circuit Response | Auto-restarts after 100ms off-time upon fault clearance - Prevents thermal runaway while maintaining system observability during intermittent faults. |
| Wide Input Range | Supports 4.5V–24V with <1V dropout - Enables single-module deployment across 5V, 12V, and 24V industrial platforms without redesign. |
Applications
| Programmable Logic Controller (PLC) I/O Module | Industrial Ethernet Gateway |
|---|---|
Use Scenario: Powering isolated digital I/O channels and RS-485 transceivers in DIN-rail mounted PLC backplanes. IC Role / Device Role / Timing Role: Primary 5V point-of-load regulator supplying FPGA configuration logic, optocoupler drivers, and level-shifting buffers. Use Value: ±2.5% output accuracy ensures reliable CMOS logic thresholds; hiccup protection prevents bus lockup during field-wiring shorts. | Use Scenario: Generating clean 5V rail for ARM Cortex-M7 MCU, Ethernet PHY, and USB interface ICs in edge-node gateways. IC Role / Device Role / Timing Role: Main system power stage delivering low-noise 5V to mixed-signal SoC domains and high-speed serial interfaces. Use Value: 28mVpp output ripple meets Ethernet PHY power-supply noise requirements; 400kHz switching avoids interference with 100MHz+ signal bands. |
| Factory Automation Sensor Hub | Medical Diagnostic Peripheral |
Use Scenario: Powering multi-channel ADCs, precision op-amps, and CAN transceivers in modular sensor aggregation units. IC Role / Device Role / Timing Role: Central 5V supply regulating auxiliary rails for analog front-end and communication subsystems. Use Value: –40°C to +85°C operating range matches industrial ambient specs; open BOM allows traceable component sourcing for ISO 13485-aligned builds. | Use Scenario: Providing regulated 5V to microcontroller, display driver, and low-power wireless (BLE/Wi-Fi) modules in handheld diagnostic tools. IC Role / Device Role / Timing Role: Compact, self-contained power solution minimizing board area in space-constrained medical enclosures. Use Value: FCQFN3x3-16 footprint saves >60% PCB area vs. discrete buck + inductor; natural convection eliminates fan noise critical for acoustic-sensitive diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530 | Successor part: 4.5–24V input, 5V fixed output, 3A rating, 1.2MHz switching, smaller 3x3mm QFN. | Higher current capacity and faster transient response; requires updated loop compensation and smaller output capacitor. | Select when upgrading to >1A loads or needing tighter regulation under dynamic load steps. |
| TSM10505 | Pin-compatible drop-in: Same 3x3mm FCQFN, 1A, 5V fixed, but ±3% accuracy and no hiccup mode (latch-off on short). | Lacks hiccup recovery and has looser voltage tolerance; suitable only where fault handling is managed upstream. | Choose only if legacy qualification data exists and short-circuit events are physically prevented in end equipment. |
Compared with MPM3530, MEZD71201A-G offers proven thermal derating curves and open-design support but lacks higher current capability; versus TSM10505, it provides superior fault resilience and tighter output accuracy at the cost of slightly larger solution size.
Availability
MEZD71201A-G is available at Aetrix Electronics and suitable for industrial control I/O modules, factory automation sensor hubs, medical diagnostic peripherals, and embedded gateway designs requiring stable component supply during legacy system maintenance.
Supply support for MEZD71201A-G 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 mEZD71201A series targets space-constrained, thermally demanding industrial applications where rapid time-to-market and design reuse are critical-delivering validated, open-layout power solutions instead of bare controllers.
FAQ
Is MEZD71201A-G still in active production?
No. MEZD71201A-G is End-of-Life (EOL) as stated in the official MPS datasheet Rev. 1.6. Monolithic Power Systems recommends migration to MPM3530 for new designs. Aetrix Electronics maintains limited legacy stock for ongoing maintenance shipments but does not offer long-term supply assurance.
What is the recommended input capacitor for MEZD71201A-G?
The datasheet specifies a 0.22µF X5R ceramic capacitor (0402) placed directly at the VIN pin, plus a bulk 4.7µF X7R (1206) capacitor nearby. This two-tier approach suppresses both high-frequency switching noise and low-frequency line ripple while maintaining stability under wide-input transients.
Can MEZD71201A-G be used with 5V input?
Yes, but only with caution: minimum input is 4.5V, so 5V input is valid. However, efficiency drops significantly below 9V input due to increased conduction losses and reduced duty cycle headroom. For 5V-only systems, verify thermal rise at full load and consider MPM3530's optimized low-VIN performance.
Does MEZD71201A-G require external feedback resistors?
No. The G-option variant has output voltage factory-set to 5.0V using an internal resistor divider. No external feedback network is needed, simplifying layout and eliminating resistor tolerance errors that affect output accuracy in adjustable modules.
How is over-temperature protection implemented?
MEZD71201A-G includes a die-temperature sensor that triggers shutdown at 150°C (typical). Recovery occurs after junction temperature falls below 135°C, and the device resumes normal operation without manual reset-enabling autonomous thermal recovery in intermittently overloaded conditions.
What is the purpose of the "DIY" designation in the product name?
"DIY" indicates Monolithic Power Systems provides complete open-design resources: Gerber files, bill of materials, test reports, and reference schematics. Engineers may modify, reproduce, and validate the design independently-unlike black-box modules-supporting full traceability and regulatory compliance documentation.
Is the thermal pad electrically connected?
Yes. The exposed thermal pad is internally connected to GND and must be soldered to a dedicated PCB copper pour tied to the main power ground plane. Failure to do so results in excessive junction temperature, premature OTP activation, and reduced output current capability.
MEZD71201A-G 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):
- 6.5V
- Voltage - Input (Max):
- 24V
- Voltage - Output 1:
- 5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1.2A
- 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:
- -
MEZD71201A-G FAQ
1.How can I place an order for MEZD71201A-G through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD71201A-G 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 MEZD71201A-G reliable?
The price and inventory of MEZD71201A-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD71201A-G is usually 5 days.
3.What payment methods are accepted for MEZD71201A-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD71201A-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD71201A-G?
MEZD71201A-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD71201A-G 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 MEZD71201A-G?
For technical support, including MEZD71201A-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD71201A-G requirements.
6.How does Aetrix verify that MEZD71201A-G is sourced from the original manufacturer or authorized distributors?
All MEZD71201A-G 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 MEZD71201A-G meets industry standards.
7.What is the process for return or replacement of MEZD71201A-G?
All MEZD71201A-G units undergo pre-shipment inspection (PSI). If there is an issue with MEZD71201A-G, 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 MEZD71201A-G part is unused and in its original packaging.
Return procedure for MEZD71201A-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MEZD71201A-G Tags
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1S4E_0505S1.5U
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