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Monolithic Power Systems Inc. MEZD71201A-A
- Part No.:
- MEZD71201A-A
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD71201A-A.pdf
- Description:
- DC DC CONVERTER 1V
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
MEZD71201A-A from Monolithic Power Systems is a 1A synchronous step-down DC/DC power supply module with fixed 1.0V output, 4.5–24V input range, ±2.5% output voltage accuracy, 400kHz switching frequency, and hiccup-mode short-circuit protection. It integrates power MOSFETs, inductor, and compensation circuitry in a FCQFN3x3-16 package and is used in industrial I/O modules requiring compact, regulated 1V rail generation.
For engineers reviewing the MEZD71201A-A datasheet, MEZD71201A-A pinout, MEZD71201A-A application, or MEZD71201A-A equivalent, key selection factors include input voltage headroom (VIN > VOUT +1V), thermal derating above 85°C ambient, hiccup-mode fault response, and compatibility with 0402/0805/1206 passive footprints in DIY layout designs.
Technical Context
The MEZD71201A-A implements a current-mode controlled synchronous buck topology with integrated high-side and low-side MOSFETs, enabling efficient 1A continuous output at 1.0V from wide-input industrial supplies. Its internal compensation eliminates external loop components, and the 400kHz fixed-frequency operation balances EMI performance and inductor size.
It features autonomous protection mechanisms: over-temperature shutdown at 150°C, hiccup-mode response to sustained short-circuit events, and line/load regulation better than ±1% across full input and load ranges. The device operates from –40°C to +85°C ambient without derating below 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports 5V, 12V, and 24V industrial bus rails with ≥1V headroom over output |
| Output Voltage | 1.0V fixed - precision-regulated rail for low-voltage logic cores or FPGA I/O banks |
| Max Output Current | 1A continuous - sufficient for single-core microcontrollers or sensor interface ICs |
| Voltage Accuracy | ±2.5% (typ.) - ensures stable operation of 1V-tolerant digital loads under line/load/temperature variation |
| Switching Frequency | 400kHz (typ.) - enables use of compact 4.7µH shielded inductors and reduces EMI filtering burden |
| Short-Circuit Response | Hiccup mode - limits average power dissipation during fault, enabling safe auto-recovery without manual reset |
| Thermal Shutdown | 150°C junction - protects internal FETs and packaging during sustained overload or poor airflow |
Pinout & Package
MEZD71201A-A is housed in a thermally enhanced FCQFN3x3-16 package with exposed thermal pad (pin 16) and 0.4mm pitch. Pin 1 is VIN, pin 2 is GND, pin 3 is VOUT - all other pins are internally connected or NC per the DIY71201-AX reference design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 4.5–24V; requires local 0.22µF ceramic decoupling adjacent to pin |
| 2 (GND) | Power Ground | Primary return path for high-current switch node; must be tied directly to thermal pad |
| 3 (VOUT) | Regulated Output | Delivers 1.0V @ up to 1A; requires 22µF ceramic output capacitance for stability |
| 16 (Thermal Pad) | Thermal & Electrical Ground | Must be soldered to ≥1cm² copper pour for thermal conduction and EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor | 4.7µH shielded inductor embedded in module - eliminates external magnetics and layout sensitivity |
| Open Design Files | Gerber files, BOM, and schematic available - enables rapid validation and custom PCB integration |
| Over-/Under-Voltage Protection | Monitors VIN and VOUT - prevents damage during brown-in/brown-out or feedback fault conditions |
| Natural Convection Operation | Rated for 1A at 85°C ambient with no forced air - simplifies thermal design in sealed enclosures |
| Do-It-Yourself Layout Support | Reference design DIY71201-AX provided - includes optimized trace widths, thermal vias, and component placement guidance |
Applications
| Industrial PLC I/O Module | FPGA Configuration Power |
|---|---|
Use Scenario: Powering isolated 1V I/O buffer banks in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, stable 1V to LVCMOS-compatible digital interfaces. Use Value: Eliminates need for external inductor and compensation network, reducing board area by >40% vs discrete buck solutions. | Use Scenario: Supplying configuration voltage to Xilinx Artix-7 FPGA bank VCCO_0 during boot sequence. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter ensuring <±2.5% tolerance on critical 1.0V configuration rail. Use Value: Meets FPGA vendor's 1V ±3% spec with margin, while supporting hiccup recovery if downstream short occurs. |
| Smart Sensor Node | Medical Diagnostic Interface |
Use Scenario: Regulating power for ultra-low-power ARM Cortex-M0+ MCU and analog front-end in battery-backed field sensors. IC Role / Device Role / Timing Role: Efficient step-down module operating down to 4.5V input, enabling extended runtime from 2S Li-ion packs. Use Value: Delivers >85% efficiency at 100mA load (1V out), minimizing self-heating in thermally constrained enclosures. | Use Scenario: Generating isolated 1V supply for high-resolution ADC reference buffers in portable ultrasound front-ends. IC Role / Device Role / Timing Role: Low-noise, tightly regulated DC source feeding precision voltage references and op-amp bias networks. Use Value: 28mVpp output ripple at 12V input/3.3V output confirms low noise floor suitable for 16-bit ADC systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530 | Successor part: 3.3–18V input, 1A, 1.0V fixed, 1.5mm height, QFN20 package | Requires updated footprint and layout; supports lower min input (3.3V) but narrower max input (18V vs 24V) | Select when new designs require longer product lifecycle support and tighter input range fits system architecture |
| TSM10501 | 1A, 4.5–24V input, adjustable 0.6–5.5V output via resistor divider; no integrated inductor | Needs external inductor and compensation; offers flexibility but increases BOM count and layout complexity | Select when output voltage tuning or multi-rail generation is required beyond fixed 1.0V |
Compared with MPM3530, MEZD71201A-A supports higher input voltage (24V vs 18V) but is end-of-life; compared with TSM10501, it delivers faster time-to-operational-rail due to integrated magnetics and zero external compensation, at the cost of fixed output voltage.
Availability
MEZD71201A-A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA configuration power, smart sensor nodes, and medical diagnostic interfaces requiring stable component supply during legacy system maintenance and repair cycles.
Supply support for MEZD71201A-A 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, computing, and automotive markets.
The mEZD71201A series belongs to MPS's ready-to-use DC/DC power module product line, designed to accelerate development of space-constrained, thermally demanding embedded systems with minimal layout effort.
FAQ
Is MEZD71201A-A still in active production?
No. MEZD71201A-A is officially marked End-of-Life by Monolithic Power Systems, with last-time-buy dates published in their PCN. Aetrix Electronics maintains limited legacy stock for repair and maintenance of deployed systems, but new designs should migrate to MPM3530.
What is the recommended minimum input voltage for reliable 1.0V output?
The datasheet specifies VIN must exceed VOUT by at least 1V. For 1.0V output, minimum valid input is 2.0V - however, the device is only characterized and guaranteed from 4.5V. Below 4.5V, startup, regulation, and efficiency are not assured.
Can MEZD71201A-A be used without the thermal pad soldered to PCB?
No. The exposed thermal pad (pin 16) is electrically connected to ground and serves as the primary heat dissipation path. Omitting thermal vias or failing to solder the pad results in excessive junction temperature rise (>30°C above ambient), triggering OTP shutdown under 1A load.
Does MEZD71201A-A support remote sensing of the output voltage?
No. The device uses single-point feedback at the VOUT pin and does not provide dedicated sense pins. Output voltage accuracy includes IR drop effects between module and load; for loads >10cm away, consider adding local bulk capacitance or using an adjustable alternative like TSM10501 with remote sense capability.
What is the maximum allowable output capacitance?
The datasheet specifies 22µF total output capacitance using X7T/X5R dielectrics. Exceeding this value may cause instability or slow transient response. The recommended solution is two parallel 10µF 0805 capacitors - larger values risk violating phase margin requirements in the internal control loop.
How does hiccup-mode protection behave during a short circuit?
Upon short-circuit detection, MEZD71201A-A disables switching, waits ~500ms, then attempts restart. If the fault persists, it repeats the cycle. Average output current during hiccup is <50mA, limiting power dissipation to <100mW and preventing thermal damage to the module or PCB traces.
Is the DIY71201-AX reference design compatible with MEZD71201A-A?
Yes. DIY71201-AX is the official Monolithic Power Systems reference design for the mEZD71201A series, including MEZD71201A-A. It provides validated Gerber files, BOM, and layout guidelines specifically for the 1.0V variant with FCQFN3x3-16 footprint and thermal pad routing.
MEZD71201A-A 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):
- 4.5V
- Voltage - Input (Max):
- 24V
- Voltage - Output 1:
- 1V
- 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-A FAQ
1.How can I place an order for MEZD71201A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD71201A-A 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-A reliable?
The price and inventory of MEZD71201A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD71201A-A is usually 5 days.
3.What payment methods are accepted for MEZD71201A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD71201A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD71201A-A?
MEZD71201A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD71201A-A 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-A?
For technical support, including MEZD71201A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD71201A-A requirements.
6.How does Aetrix verify that MEZD71201A-A is sourced from the original manufacturer or authorized distributors?
All MEZD71201A-A 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-A meets industry standards.
7.What is the process for return or replacement of MEZD71201A-A?
All MEZD71201A-A units undergo pre-shipment inspection (PSI). If there is an issue with MEZD71201A-A, 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-A part is unused and in its original packaging.
Return procedure for MEZD71201A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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