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Monolithic Power Systems Inc. MEZD72402A-A
- Part No.:
- MEZD72402A-A
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD72402A-A.pdf
- Description:
- DC DC CONVERTER 1V
- Quantity:
- Payment:
- Shipping:
Inventory:3,394
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Product details
Overview
MEZD72402A-A from Monolithic Power Systems is a ready-to-use, synchronous step-down DC/DC power supply module delivering 2A continuous output at 1.0V with 4.5V–36V input range, ±2.5% output voltage accuracy, and 400kHz switching frequency; used in industrial control power rails where compact, pre-validated 1V bias supplies are required.
For engineers reviewing the MEZD72402A-A datasheet, MEZD72402A-A pinout, MEZD72402A-A application, or MEZD72402A-A equivalent, key selection criteria include input voltage headroom (VIN > VOUT +1V), hiccup-mode short-circuit protection, thermal derating above 85°C ambient, and compatibility with 0402/0805/1206 passive footprints in DIY layouts.
Technical Context
This module integrates controller, MOSFETs, and compensation into a QFN-16 package with internal bootstrap circuitry and fixed-frequency current-mode control. It supports adjustable output via external resistor divider (not populated on A-version) but ships factory-set to 1.0V.
Operation requires VIN ≥ VOUT +1V (i.e., ≥2.0V minimum for 1.0V output), delivers 26.4mV peak-to-peak ripple at 24V input/3.3V output/full load, and enters hiccup mode during sustained short-circuit events-restarting after thermal recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V; supports 12V/24V industrial bus inputs with ≥1V headroom over output |
| Output Voltage | 1.0V (factory-set); fixed output eliminates need for external feedback resistors |
| Max Output Current | 2A continuous; sustained delivery verified under natural convection at ≤85°C ambient |
| Switching Frequency | 400kHz typical; enables use of compact 5.6µH shielded inductor (ETQP3M6R8KVP) |
| Output Voltage Accuracy | ±2.5% typical; ensures stable core voltage for low-voltage microcontrollers and FPGAs |
| Protections | Hiccup-mode short-circuit, over-temperature (150°C trip), over-current, and input UVLO |
| Ripple & Noise | 26.4mV p-p at VIN=24V/VOUT=3.3V/full load; measured across 22µF X7T/X5R ceramic output caps |
Pinout & Package
Package: QFN-16, 5mm × 5mm × 1.0mm body, exposed thermal pad (PGND-connected), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 4.5–36V; requires local 0.22µF ceramic bypass (0402) and bulk 4.7µF (1206) |
| 2 (GND) | Power Ground | Primary PGND connection; ties to exposed thermal pad for thermal and EMI performance |
| 3 (VOUT) | Regulated Output | Delivers 1.0V/2A; routed to dual 22µF output capacitors (0805) per layout guidelines |
| 4–16 | No Connect / Thermal Pad | Pins 4–15 are NC; Pin 16 is thermal pad-must be soldered to PCB copper for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Buck Topology | Eliminates external high-side/low-side MOSFETs and gate drivers-reduces BOM count by ≥8 components |
| Factory-Set 1.0V Output | Removes need for feedback resistor network and associated layout sensitivity-ideal for space-constrained 1V logic rails |
| Hiccup-Mode Short-Circuit Protection | Auto-recovery after fault clears; prevents thermal runaway during board-level test or field wiring errors |
| Open Design Files & BOM | Full Gerber, schematic, and validated bill-of-materials available-enables rapid copy-and-adapt for custom designs |
| Thermal Derating Curve | Defined output power vs. ambient temperature (e.g., 100% at 25°C → 60% at 105°C); supports thermal margining in sealed enclosures |
Applications
| Industrial PLC I/O Module Power | Low-Voltage FPGA Core 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 supplying FPGA I/O banks and microcontroller peripherals. Use Value: Delivers clean, regulated 1.0V at up to 2A with <27mV ripple-meets Xilinx Spartan-7 I/O bank noise tolerance (≤30mV p-p). | Use Scenario: Providing core voltage to low-power FPGA fabric operating at 1.0V nominal. IC Role / Device Role / Timing Role: Fixed-output buck module serving as main core rail for Lattice iCE40UP or Intel MAX 10 FPGA logic arrays. Use Value: Factory-trimmed ±2.5% accuracy ensures timing closure across voltage/temperature corners without dynamic calibration. |
| Embedded Motor Drive Logic Supply | Smart Sensor Node Bias Rail |
Use Scenario: Generating logic supply for gate driver ICs and position encoder interfaces in BLDC motor drives. IC Role / Device Role / Timing Role: Stable 1.0V source for isolated SPI communication buffers and PWM comparator reference circuits. Use Value: 400kHz switching frequency avoids interference with 20kHz motor PWM carrier while enabling small 5.6µH inductor footprint. | Use Scenario: Powering ultra-low-power environmental sensor clusters (e.g., BME680 + nRF52840) in battery-assisted edge nodes. IC Role / Device Role / Timing Role: Primary regulated rail for mixed-signal SoC analog front-end and RF transceiver core. Use Value: 2A capability supports burst-mode sensing/transmission peaks; hiccup protection prevents latch-up during sensor self-test shorts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC step-down module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530 | Successor part: same 4.5–36V input, 2A, 1.0V fixed output; improved efficiency (92% @ 12V→1V), smaller 4mm×4mm QFN | Supports higher ambient temps (TJ max = 125°C vs. 105°C); includes enable pin and power-good flag | Select MPM3530 for new designs requiring extended lifetime, tighter thermal specs, or system-level status signaling. |
| mEZD72401A-A | Same family, lower current: 1A max output; identical pinout, package, and 1.0V setting | Lower thermal mass and reduced inductor DCR-suitable for <1A loads where board area is constrained | Choose mEZD72401A-A only when 1A suffices and legacy layout reuse is critical. |
Compared with MEZD72402A-A, MPM3530 offers higher efficiency and integrated monitoring features at smaller size, while mEZD72401A-A provides pin-compatible down-rating for cost-sensitive 1A applications-neither is drop-in due to thermal pad layout and EN/PG pin additions.
Availability
MEZD72402A-A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA core supplies, embedded motor drive logic, and smart sensor node bias rails requiring stable component supply amid end-of-life transitions.
Supply support for MEZD72402A-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 mEZD72402A series targets rapid deployment of reliable, pre-validated DC/DC solutions for engineers needing turnkey 1–5V, 1–2A power rails without custom design cycles.
FAQ
Is MEZD72402A-A still in production?
No-MEZD72402A-A is officially End-of-Life (EOL) per Monolithic Power Systems documentation dated February 2018. Aetrix Electronics maintains limited legacy stock and actively supports migration to the recommended replacement, MPM3530, including cross-reference design review and sample coordination.
Can MEZD72402A-A be used with input voltages below 4.5V?
No. The absolute minimum input voltage is 4.5V, and VIN must exceed VOUT by at least 1V. For a 1.0V output, VIN cannot fall below 2.0V-but the device will not start or regulate below 4.5V due to internal UVLO threshold and bootstrap capacitor charging requirements.
What is the purpose of the exposed thermal pad on the QFN-16 package?
It serves as the primary thermal and electrical connection to PGND. Proper soldering to a dedicated PCB thermal plane is mandatory for achieving rated 2A output and maintaining junction temperature below 105°C under full load and natural convection cooling.
Does MEZD72402A-A require external feedback resistors to set 1.0V output?
No. The "A" suffix denotes factory-programmed 1.0V output. Feedback resistors are omitted from the internal circuit-no external components are needed to achieve nominal 1.0V regulation, simplifying layout and reducing risk of resistor tolerance drift.
How does hiccup-mode protection behave during a short circuit?
Upon detecting sustained over-current, the module shuts down, cools, then attempts automatic restart after ~500ms. This cycle repeats until the fault clears. Unlike latch-off, hiccup mode prevents thermal damage while allowing autonomous recovery-critical for unattended industrial equipment.
Are Gerber files and BOM publicly available for MEZD72402A-A?
Yes-Monolithic Power Systems provides open design files including full Gerber stack-up, schematic PDF, and validated BOM (with manufacturer PNs like GRM155R61C224KA12D and ETQP3M6R8KVP) via direct request to [email protected].
What is the MTBF value and how was it calculated?
The calculated MTBF is 4185 × 10³ hours, derived per MIL-HDBK-217F methodology using component stress analysis at 25°C ambient. This reflects reliability under nominal conditions-not accelerated life testing-and assumes proper thermal management and input voltage derating per datasheet curves.
MEZD72402A-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):
- 36V
- Voltage - Output 1:
- 1V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 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:
- -
MEZD72402A-A FAQ
1.How can I place an order for MEZD72402A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD72402A-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 MEZD72402A-A reliable?
The price and inventory of MEZD72402A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD72402A-A is usually 5 days.
3.What payment methods are accepted for MEZD72402A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD72402A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD72402A-A?
MEZD72402A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD72402A-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 MEZD72402A-A?
For technical support, including MEZD72402A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD72402A-A requirements.
6.How does Aetrix verify that MEZD72402A-A is sourced from the original manufacturer or authorized distributors?
All MEZD72402A-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 MEZD72402A-A meets industry standards.
7.What is the process for return or replacement of MEZD72402A-A?
All MEZD72402A-A units undergo pre-shipment inspection (PSI). If there is an issue with MEZD72402A-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 MEZD72402A-A part is unused and in its original packaging.
Return procedure for MEZD72402A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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