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Monolithic Power Systems Inc. MEZD72401A-D
- Part No.:
- MEZD72401A-D
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD72401A-D.pdf
- Description:
- DC DC CONVERTER 1.8V
- Quantity:
- Payment:
- Shipping:
Inventory:1,129
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Product details
Overview
MEZD72401A-D from Monolithic Power Systems is a ready-to-use, 1A synchronous step-down DC/DC power supply module with fixed 1.8V output, 4.5–36V input range, ±2.5% output voltage accuracy, 400kHz switching frequency, and hiccup-mode short-circuit protection. It integrates power MOSFETs, controller, and compensation, targeting space-constrained industrial and embedded power rails.
For engineers reviewing the MEZD72401A-D datasheet, MEZD72401A-D pinout, MEZD72401A-D application, or MEZD72401A-D equivalent, key selection factors include its fixed-output configuration, thermal derating behavior up to 125°C ambient, integrated over-temperature (150°C) and over-current protection, and compatibility with standard 0805/1206 passive footprints in DIY layouts.
Technical Context
This module implements a constant-frequency current-mode synchronous buck converter with internal high-side and low-side MOSFETs, bootstrap gate drive, and internal compensation. It operates across a wide input range without external loop tuning and supports stable regulation down to 1.8V output at full 1A load.
Protection features are hardware-based: OTP triggers at 150°C junction temperature, short-circuit initiates hiccup mode with automatic recovery, and line/load regulation remains within ±1% (typ.) across full input and load ranges - critical for unregulated 24V bus or automotive battery-supplied systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports direct connection to 12V/24V industrial buses and automotive batteries with transient tolerance. |
| Output Voltage | Fixed 1.8V - factory-set; no external resistor divider required; optimized for low-voltage logic rails (e.g., FPGA I/O, ARM core supplies). |
| Max Output Current | 1A continuous - sustained under natural convection at ≤85°C ambient; derates linearly above 85°C per published curve. |
| Switching Frequency | 400kHz (typ.) - enables use of compact 10µH shielded inductors and reduces EMI filtering burden vs. lower-frequency converters. |
| Output Voltage Accuracy | ±2.5% (typ.) - includes initial tolerance, line/load/temperature drift; sufficient for non-critical digital supply domains. |
| Protections | Hiccup short-circuit, over-temperature (150°C), over-current - autonomous recovery without host intervention; no latch-off. |
| Ripple & Noise | 20mVpp @ VIN=24V, VOUT=3.3V, full load - measured with 20MHz bandwidth; actual 1.8V variant meets <30mVpp with same filter. |
Pinout & Package
Package: Integrated QFN-based module (non-standard footprint), 16-pin QFN-16 outline per DIY72401-AX reference design; board-level assembly with exposed thermal pad soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 4.5–36V; requires local 0.22µF ceramic bypass and bulk capacitance (C2/C3); connects to high-current trace. |
| 2 (GND) | Power Ground | PGND pin; must be tied directly to thermal pad and low-impedance ground plane; separates power and analog return paths. |
| 3 (VOUT) | Regulated Output | Delivers 1.8V/1A; requires 22µF X7T/X5R output capacitance (C3/C4) placed adjacent to pin for stability and ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Buck Topology | Eliminates need for external MOSFETs, drivers, and loop compensation components - reduces BOM count by ≥12 parts vs. controller-based designs. |
| Open Design Files & BOM | Gerber files, schematic, and validated bill-of-materials publicly available - accelerates layout verification and second-source procurement. |
| Thermal Derating Curve Provided | Published power vs. ambient temperature graph (up to 125°C) enables accurate system-level thermal margining without empirical testing. |
| Wide Input Range with No External Bias | Operates from 4.5V without auxiliary bias supply - supports cold-crank automotive (≥6.5V min) and brownout-tolerant industrial 24V systems. |
| Hiccup Short-Circuit Recovery | Auto-restarts after fault clearance - avoids system lockup during intermittent shorts (e.g., connector mating, PCB contamination). |
Applications
| Industrial PLC I/O Module | FPGA Configuration Supply |
|---|---|
Use Scenario: Powering isolated 1.8V I/O banks in DIN-rail mounted programmable logic controllers with 24V DC field power. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, protected 1.8V to digital isolators and level-shifters. Use Value: Eliminates need for external current limiting and thermal monitoring circuitry due to integrated hiccup and OTP. | Use Scenario: Supplying configuration voltage to Xilinx Artix-7 FPGA bank VCCO_0 during boot and runtime. IC Role / Device Role / Timing Role: Fixed-output DC/DC module ensuring stable 1.8V rail within FPGA's ±3% tolerance window across temperature. Use Value: Meets FPGA's fast transient response requirement (<10µs) via low-ESR ceramic output caps and integrated control loop. |
| Automotive Body Control Unit | Medical Sensor Interface Board |
Use Scenario: Regulating 1.8V for CAN transceiver logic and microcontroller peripherals in 12V battery-powered body modules. IC Role / Device Role / Timing Role: Input-tolerant buck module handling cold-crank (6.5V min) and load-dump (40V max) transients via upstream TVS. Use Value: Maintains regulation during 15ms 24V battery dips - verified per ISO 16750-2 Pulse 4a test profile. | Use Scenario: Powering low-noise ADC front-end and digital signal processor on portable ultrasound sensor boards. IC Role / Device Role / Timing Role: Low-ripple 1.8V source minimizing PSRR-induced noise coupling into analog signal chain. Use Value: 20mVpp ripple (measured) ensures <−70dBc spurious content in 16-bit ADC sampling at 1MSPS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530DQV-1.8 | Same manufacturer; 1A, 1.8V fixed, 4.5–36V input, but uses smaller 3mm×3mm QFN and higher 1.5MHz switching frequency. | Higher frequency allows smaller 2.2µH inductor; reduced board area but increased switching loss at high ambient. | Select when footprint reduction >25% is prioritized and thermal headroom permits higher core loss. |
| TSM10501.8 | 1A, 1.8V fixed, 4.5–36V input; integrated inductor; 2.1MHz switching; ±2% accuracy; no hiccup mode (latch-off on SC). | Latch-off protection requires system reset; no open design files; inductor not replaceable. | Select only if board-level repairability and field service recovery are non-critical. |
Compared with MEZD72401A-D, MPM3530DQV-1.8 offers higher density but tighter thermal constraints, while TSM10501.8 trades autonomous recovery for integration - making MEZD72401A-D optimal for field-deployed equipment requiring robust fault resilience and design transparency.
Availability
MEZD72401A-D is available at Aetrix Electronics and suitable for industrial PLCs, FPGA power sequencing, automotive body control units, and medical sensor interfaces requiring stable component supply amid end-of-life transitions.
Supply support for MEZD72401A-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 modules for industrial, automotive, and computing markets.
The mEZD72401A series belongs to MPS's integrated power module product line, designed to simplify point-of-load conversion with validated layouts, open documentation, and robust protection - targeting engineers needing rapid, reliable power subsystem deployment.
FAQ
Is MEZD72401A-D still in active production?
No - MEZD72401A-D is marked End-of-Life (EOL) by Monolithic Power Systems as of Rev. 1.5 (July 2019). It is superseded by the MPM3530 family. Aetrix Electronics maintains limited legacy stock and supports last-time-buy programs with full traceability and extended warranty for qualified industrial customers.
Can MEZD72401A-D be used with input voltages below 4.5V?
No - the absolute minimum input voltage is 4.5V (6.5V for versions marked 'G'). Operation below 4.5V will cause dropout, unregulated output, or startup failure. For sub-4.5V inputs, consider the MPM3510A or MPQ4572 series, which support 2.7V minimum input.
What is the recommended output capacitor for MEZD72401A-D?
The datasheet specifies two 22µF X7T/X5R ceramic capacitors (0805 case) in parallel at the VOUT pin. Total effective capacitance must be ≥44µF with ≤10mΩ ESL; GRM21BD71A226ME44L or GRM21BR61A226ME51L are validated equivalents per the BOM.
Does MEZD72401A-D require an external enable signal?
No - MEZD72401A-D has no EN pin and powers up automatically when VIN exceeds 4.5V. The module lacks remote ON/OFF control; for sequenced startup, add an external ideal diode or load switch upstream of VIN.
How is thermal performance validated for this module?
Thermal performance is validated using MIL-HDBK-217F reliability modeling (MTBF = 4185×10³ hrs) and empirical derating curves showing output power vs. ambient temperature. The thermal pad must be soldered to ≥250mm² of 2oz copper with ≥4 thermal vias to internal ground planes per design guide.
Are Gerber files and schematics available for MEZD72401A-D?
Yes - Monolithic Power Systems provides complete open design files including Gerber layers, schematic PDF, and BOM (with manufacturer PNs) for the DIY72401-AX reference board. These are accessible via [email protected] or the MPS website under "mEZ Design Resources".
What is the maximum allowable output capacitance?
The module supports up to 100µF total output capacitance. Exceeding this may cause startup overshoot or instability. The recommended 44µF (2×22µF) balances transient response, ripple suppression, and startup reliability per characterization data in Rev. 1.5 datasheet.
MEZD72401A-D 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:
- 1.8V
- 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-D FAQ
1.How can I place an order for MEZD72401A-D through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD72401A-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 MEZD72401A-D reliable?
The price and inventory of MEZD72401A-D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD72401A-D is usually 5 days.
3.What payment methods are accepted for MEZD72401A-D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD72401A-D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD72401A-D?
MEZD72401A-D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD72401A-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 MEZD72401A-D?
For technical support, including MEZD72401A-D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD72401A-D requirements.
6.How does Aetrix verify that MEZD72401A-D is sourced from the original manufacturer or authorized distributors?
All MEZD72401A-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 MEZD72401A-D meets industry standards.
7.What is the process for return or replacement of MEZD72401A-D?
All MEZD72401A-D units undergo pre-shipment inspection (PSI). If there is an issue with MEZD72401A-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 MEZD72401A-D part is unused and in its original packaging.
Return procedure for MEZD72401A-D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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