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Monolithic Power Systems Inc. MEZD72401A-A
- Part No.:
- MEZD72401A-A
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD72401A-A.pdf
- Description:
- DC DC CONVERTER 1V
- Quantity:
- Payment:
- Shipping:
Inventory:1,718
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Product details
Overview
mEZD72401A-A from Monolithic Power Systems is a 1A, synchronous step-down DC/DC power supply module with 4.5V–36V input range, fixed 1.0V output, ±2.5% output voltage accuracy, 400kHz switching frequency, and hiccup-mode short-circuit protection-designed for space-constrained industrial control and embedded power rails.
For engineers reviewing the mEZD72401A-A datasheet, mEZD72401A-A pinout, mEZD72401A-A application, or mEZD72401A-A equivalent, key selection criteria include input voltage headroom (VIN > VOUT +1V), thermal derating above 85°C ambient, hiccup-mode fault response, and compatibility with 0402/0805 passive footprints in DIY layout mode.
Technical Context
The mEZD72401A-A integrates a controller, power MOSFETs, and compensation network into a QFN-16 module, operating in continuous conduction mode (CCM) with internal 400kHz oscillator. It supports adjustable soft-start via external capacitor on EN pin and delivers regulated 1.0V at up to 1A across -40°C to +85°C ambient.
Input-to-output headroom requirement (VIN ≥ VOUT +1V) enforces minimum 2.0V input for 1.0V output operation. Over-temperature protection triggers at 150°C junction temperature with automatic recovery, and line/load regulation remains within ±1% under full-load and input variation conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V–36V - supports 12V/24V industrial bus rails and wide-input battery systems |
| Output Voltage | 1.0V (fixed) - targets low-voltage logic rails (e.g., FPGA core, ASIC I/O) |
| Max Output Current | 1A - sufficient for single-rail microcontroller or sensor subsystems |
| Switching Frequency | 400kHz - enables compact 10µH inductor and <20mV output ripple at 3.3V/1A |
| Output Accuracy | ±2.5% (typ.) - meets tight tolerance requirements for digital core supplies |
| Protections | Hiccup-mode short-circuit, OTP (150°C), OVP/UVP - ensures self-recovery under fault without latch-up |
| Rise Time | 0.75ms (typ.) - provides controlled power-up sequencing for downstream logic |
Pinout & Package
Package: QFN-16, 4mm × 4mm × 1.0mm body, exposed thermal pad (PGND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16 | PGND / AGND | Power and analog ground terminals - require low-impedance copper pour and direct connection to thermal pad |
| 3 | VIN | Main input supply - must be decoupled with ≥0.22µF ceramic close to pin |
| 6 | EN | Enable control - active-high; pulled high internally; optional RC soft-start |
| 9 | PGOOD | Open-drain power-good signal - asserts after output reaches 90% of target |
| 12 | VOUT | Regulated output - requires 22µF ceramic output capacitance (X7T/X5R) per datasheet |
| 15 | BST | Bootstrap capacitor node - connects to 0.1µF ceramic between BST and SW for high-side FET drive |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Topology | Integrated high-/low-side MOSFETs eliminate external diode, enabling >90% efficiency at mid-load |
| Thermal Derating Curve | Linear power reduction above 85°C ambient - enables predictable operation in sealed enclosures |
| Open Design Files | Gerber, BOM, and schematic provided - accelerates layout validation and custom footprint integration |
| Hiccup Short-Circuit Response | Current-limit + auto-restart cycle - prevents thermal runaway during sustained overload |
| Wide Input Range | 4.5V–36V - accommodates 12V/24V systems with transient spikes up to 40V |
Applications
| Industrial PLC I/O Module | FPGA Core Power Supply |
|---|---|
Use Scenario: Powering isolated digital I/O banks in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 1.0V point-of-load regulator delivering stable rail to 3.3V-tolerant interface ICs and level shifters. Use Value: Integrated thermal protection and hiccup mode prevent field failures during wiring faults or ESD events. | Use Scenario: Supplying FPGA core logic (e.g., Xilinx Artix-7) requiring tightly regulated 1.0V at ≤1A. IC Role / Device Role / Timing Role: Fixed-output buck module replacing discrete controller + FET solution to reduce layout area by >40%. Use Value: ±2.5% output accuracy and <0.75ms rise time ensure clean power-up sequencing aligned with FPGA configuration timing. |
| Medical Sensor Node | Automotive Body Control Unit |
Use Scenario: Compact wearable sensor hub with ultra-low-noise analog front-end and BLE SoC. IC Role / Device Role / Timing Role: Secondary 1.0V rail generator from 3.3V intermediate bus, minimizing noise coupling into ADC reference path. Use Value: 400kHz switching frequency places fundamental noise beyond sensitive 10–100kHz biosignal bands. | Use Scenario: Powering microcontroller peripherals (CAN transceivers, LIN drivers) in non-safety-critical BCM modules. IC Role / Device Role / Timing Role: Robust 1.0V supply tolerant to 24V battery transients and cold-crank dips down to 4.5V. Use Value: Input range and hiccup protection meet ISO 7637-2 Pulse 4 (load dump) survivability requirements without external TVS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530 | Same manufacturer, pin-compatible successor; improved efficiency (94% vs 92%), lower quiescent current (25µA vs 50µA), extended temp range (–40°C to +125°C) | Supports higher ambient temperatures in engine bay or industrial enclosures | Select MPM3530 for new designs requiring longer lifecycle support and enhanced thermal performance |
| TSM10501 | 1A, 4.5–36V input, but fixed 3.3V output only; no 1.0V option; uses different package (SIP-7) | Limited to 3.3V applications; lacks PGOOD and BST pin access | Only viable if system redesign allows 3.3V rail consolidation and board re-layout is acceptable |
Compared with mEZD72401A-A, MPM3530 offers direct upgrade path with broader temperature capability and lower IQ, while TSM10501 sacrifices output flexibility and monitoring features for SIP-7 simplicity-making it unsuitable for 1.0V core rail replacement without architecture change.
Availability
mEZD72401A-A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA core power supplies, medical sensor nodes, and automotive body control units requiring stable component supply despite end-of-life status.
Supply support for mEZD72401A-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 integrated power modules for industrial, computing, and automotive markets.
The mEZD72401A series belongs to MPS's ready-to-use DC/DC module product line, engineered for rapid deployment in space-constrained applications where layout expertise or time-to-market constraints preclude discrete power design.
FAQ
Is mEZD72401A-A still in production?
No-mEZD72401A-A is officially End-of-Life per MPS documentation dated July 2019. Aetrix Electronics maintains limited legacy stock and supports last-time buys with full traceability. Customers are advised to migrate to MPM3530 for new designs.
What is the thermal pad connection requirement for QFN-16 package?
The exposed thermal pad (Pin 15) must be soldered to a solid PGND copper pour with ≥4 thermal vias (0.3mm diameter) connecting to inner ground planes. Failure to do so causes junction temperature rise exceeding 150°C at 1A load, triggering OTP shutdown.
Can mEZD72401A-A operate with 3.3V input?
No-minimum input voltage is 4.5V, and VIN must exceed VOUT by at least 1V. With 1.0V output, absolute minimum valid input is 2.0V, but datasheet specifies 4.5V as absolute minimum due to internal bias and gate drive requirements.
Does mEZD72401A-A support remote sensing?
No-mEZD72401A-A lacks dedicated sense pins and relies on local feedback at the VOUT pin. For applications with >100mV IR drop between module and load, output voltage accuracy degrades beyond ±2.5% due to lack of Kelvin sensing.
What is the purpose of the BST pin?
The BST pin connects to a 0.1µF ceramic capacitor between BST and SW nodes to generate boosted gate drive voltage for the internal high-side MOSFET, ensuring full enhancement and low RDS(on) across the entire input range.
How does hiccup-mode protection behave during sustained short circuit?
Upon short-circuit detection, mEZD72401A-A limits peak current, shuts down for ~500ms, then attempts restart. If fault persists, it repeats the cycle indefinitely-preventing thermal damage while allowing automatic recovery when fault clears.
Are Gerber files and BOM publicly available for mEZD72401A-A?
Yes-MPS provides complete open-design resources including Gerber files, bill of materials, and schematic for mEZD72401A-A via [email protected]. No NDA is required, and all components use standard 0402/0805 footprints.
MEZD72401A-A 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):
- 36V
- Voltage - Output 1:
- 1V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1A
- 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:
- -
MEZD72401A-A FAQ
1.How can I place an order for MEZD72401A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD72401A-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 MEZD72401A-A reliable?
The price and inventory of MEZD72401A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD72401A-A is usually 5 days.
3.What payment methods are accepted for MEZD72401A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD72401A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD72401A-A?
MEZD72401A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD72401A-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 MEZD72401A-A?
For technical support, including MEZD72401A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD72401A-A requirements.
6.How does Aetrix verify that MEZD72401A-A is sourced from the original manufacturer or authorized distributors?
All MEZD72401A-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 MEZD72401A-A meets industry standards.
7.What is the process for return or replacement of MEZD72401A-A?
All MEZD72401A-A units undergo pre-shipment inspection (PSI). If there is an issue with MEZD72401A-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 MEZD72401A-A part is unused and in its original packaging.
Return procedure for MEZD72401A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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