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Monolithic Power Systems Inc. MEZD72401A-H
- Part No.:
- MEZD72401A-H
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD72401A-H.pdf
- Description:
- 4.5V-36V INPUT, 1A, 12V OUTPUT,
- Quantity:
- Payment:
- Shipping:
Inventory:4,948
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Product details
Overview
mEZD72401A-H from Monolithic Power Systems is a 1A, synchronous step-down DC/DC power supply module with 4.5–36V input and fixed 12V output, housed in a QFN-16 package. It integrates MOSFETs, controller, compensation, and shielding, delivering ±2.5% output voltage accuracy, 400kHz switching frequency, hiccup-mode short-circuit protection, and operates from –40°C to +85°C ambient.
For engineers reviewing the mEZD72401A-H datasheet, mEZD72401A-H pinout, mEZD72401A-H application, or mEZD72401A-H equivalent, key selection criteria include input voltage range (4.5–36V), 12V/1A regulated output, thermal derating behavior, EN control interface, and compatibility with DIY board layout files and open BOM.
Technical Context
This module implements a fully integrated buck converter architecture with internal high-side and low-side MOSFETs, fixed-frequency current-mode control, and internal compensation. It supports adjustable enable threshold via external resistor divider and features built-in over-temperature (150°C trip), over-current, and hiccup-mode short-circuit protection.
The device requires no external loop compensation and uses ceramic output capacitors (22µF ×2) and a 10µH shielded inductor. Input ripple rejection is maintained across 4.5–36V input, with line regulation of ±1% (typ.) at 3.3V output and load regulation of ±1% (typ.) from min to full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports wide industrial input rails including 12V, 24V, and 36V battery or bus systems |
| Output Voltage | Fixed 12V - factory-set, no external feedback resistors required |
| Max Output Current | 1A continuous - sustained delivery under natural convection at ≤85°C ambient |
| Switching Frequency | 400kHz (typ.) - enables compact magnetics and predictable EMI profile |
| Output Voltage Accuracy | ±2.5% (typ.) - ensures stable 12V rail for downstream logic, sensors, or analog circuitry |
| Protections | Hiccup-mode short-circuit, OTP (150°C), OCP - autonomous recovery without latch-off or system reset |
| Ripple & Noise | 20mVpp @ VIN=24V, VOUT=3.3V, full load - measured with 20MHz bandwidth; actual 12V variant lower |
Pinout & Package
Package: QFN-16, exposed thermal pad, 4mm × 4mm footprint, 0.5mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16 | GND / PGND / AGND | Multi-node ground return path - separates power, analog, and thermal ground for noise isolation and thermal dissipation |
| 3 | VIN | Main input supply connection - accepts 4.5–36V with internal UVLO and overvoltage clamping |
| 6 | EN | Enable control input - active-high, 1.2V threshold; supports sequencing and standby mode |
| 9 | PGND | Power ground reference for high-side switch - routed separately to minimize switching noise coupling |
| 12 | VOUT | Regulated 12V output - low-ESR ceramic capacitor placement critical for stability and transient response |
| 15 | BST | Bootstrap capacitor connection - supplies gate drive voltage for internal high-side MOSFET |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Buck | Eliminates need for external MOSFETs, drivers, or compensation network - reduces design cycle and layout risk |
| Open Design Files & BOM | Gerber, schematic, and validated BOM provided - accelerates prototyping and enables custom PCB integration |
| Hiccup Short-Circuit Protection | Auto-retry behavior limits average power during fault - prevents thermal runaway without manual reset |
| Thermal Derating Curve | Defined power vs. ambient temperature (e.g., 100% at 25°C, ~65% at 85°C) - enables accurate system-level thermal margining |
| Wide Input Range | Supports direct connection to unregulated 12V/24V vehicle or industrial bus - avoids pre-regulation stage |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering isolated digital I/O drivers and analog sensor interfaces in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 12V point-of-load regulator supplying field-side logic and level-shifting circuitry. Use Value: Stable 12V rail maintains signal integrity across wide input transients (e.g., load dump up to 36V) and meets EN 50155 surge immunity requirements. | Use Scenario: Providing regulated 12V to microcontroller peripherals, LIN transceivers, and LED drivers in door modules. IC Role / Device Role / Timing Role: Secondary power rail derived from vehicle battery, replacing discrete LDO+pre-regulator chains. Use Value: Eliminates external pass transistor and heat sink while sustaining 1A peak current during window motor activation pulses. |
| Medical Infusion Pump Controller | Outdoor Wireless Gateway |
Use Scenario: Supplying 12V to motor drivers and display backlight in battery-backed portable medical equipment. IC Role / Device Role / Timing Role: Main DC/DC stage converting 12–24V LiFePO₄ pack voltage to stable system rail. Use Value: High efficiency (>85% at mid-load) extends runtime; hiccup protection prevents fault propagation during motor stall events. | Use Scenario: Powering RF front-end, Ethernet PHY, and MCU in IP66-rated outdoor base stations. IC Role / Device Role / Timing Role: Isolated 12V source supporting PoE-powered auxiliary circuits and environmental sensor clusters. Use Value: Robust operation across –40°C to +85°C ambient with no derating loss below 70°C - verified per MIL-HDBK-217F MTBF model. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12V, 1A buck module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530GQV | Same manufacturer, newer generation; 4.5–36V input, 12V/1A, QFN-16, 2.2MHz switching frequency, higher efficiency (92% typ.), smaller footprint | Requires updated layout due to 2.2MHz operation and different BST cap placement; supports tighter transient response | Select when upgrading legacy designs requiring improved efficiency, smaller solution size, or extended lifecycle support |
| TFS7701-12 | Off-the-shelf 12V/1A module (Torex); 4.5–36V input, ±2% accuracy, 500kHz, no EN pin, fixed 12V only, larger 7.5×7.5mm package | Lacks enable control and thermal pad access; limited layout flexibility and no open design files | Select only for cost-sensitive, non-sequenced applications where board space and design reuse are secondary |
Compared with mEZD72401A-H, MPM3530GQV offers higher frequency and efficiency but demands layout revision, while TFS7701-12 trades control flexibility and thermal performance for simplicity and lower unit cost - choice depends on upgrade scope and production volume.
Availability
mEZD72401A-H is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical portable equipment requiring stable component supply despite end-of-life status.
Supply support for mEZD72401A-H 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 ready-to-use power module product line, designed to simplify DC/DC conversion in space-constrained, thermally demanding applications where reliability and fast time-to-market are critical.
FAQ
Is mEZD72401A-H still in production?
No - mEZD72401A-H is officially marked End-of-Life by Monolithic Power Systems as of Rev. 1.5 (July 2019). Aetrix Electronics maintains limited legacy stock and supports transition planning to MPM3530GQV with cross-reference documentation and layout guidance.
What is the recommended replacement for mEZD72401A-H?
The MPM3530GQV is the direct, pin-compatible successor from MPS, offering identical 12V/1A output, enhanced efficiency, and extended lifecycle support. It shares the same QFN-16 package and thermal pad layout, though BST capacitor placement differs slightly due to higher switching frequency.
Does mEZD72401A-H require external compensation components?
No - the device integrates full compensation circuitry. No external RC networks or type-II/type-III compensators are needed. The internal control loop is factory-tuned for stability with the specified 10µH inductor and dual 22µF output capacitors.
Can mEZD72401A-H be used with input voltages below 4.5V?
No - the absolute minimum input voltage is 4.5V. Below this, the internal UVLO prevents startup. The device also requires VIN to exceed VOUT by at least 1V; thus, 12V output mandates ≥13V input for regulation, consistent with its 4.5–36V rating.
What is the thermal pad soldering requirement for QFN-16 package?
The exposed thermal pad must be soldered to a dedicated copper pour connected to GND with ≥4 thermal vias (0.3mm diameter, spaced ≤1mm apart). Insufficient thermal relief causes junction temperature rise beyond 150°C OTP threshold under 1A load at >60°C ambient.
Is the EN pin compatible with 3.3V logic levels?
Yes - the EN pin has a 1.2V threshold with hysteresis and supports direct connection to standard 3.3V GPIO. Pull-up to VIN is not required; a 10kΩ pull-down ensures default disable state during power-up sequencing.
Where can I obtain the Gerber files and BOM for the DIY board?
Gerber files, schematic, and full BOM are available directly from Monolithic Power Systems upon request to [email protected]. Aetrix Electronics provides technical assistance in interpreting these files and adapting them for custom PCB revisions.
MEZD72401A-H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 3-SIP Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 12V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (With Derating)
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MEZD72401A-H FAQ
1.How can I place an order for MEZD72401A-H through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD72401A-H 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-H reliable?
The price and inventory of MEZD72401A-H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD72401A-H is usually 5 days.
3.What payment methods are accepted for MEZD72401A-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD72401A-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD72401A-H?
MEZD72401A-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD72401A-H 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-H?
For technical support, including MEZD72401A-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD72401A-H requirements.
6.How does Aetrix verify that MEZD72401A-H is sourced from the original manufacturer or authorized distributors?
All MEZD72401A-H 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-H meets industry standards.
7.What is the process for return or replacement of MEZD72401A-H?
All MEZD72401A-H units undergo pre-shipment inspection (PSI). If there is an issue with MEZD72401A-H, 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-H part is unused and in its original packaging.
Return procedure for MEZD72401A-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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