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Monolithic Power Systems Inc. MEZD72402A-D
- Part No.:
- MEZD72402A-D
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD72402A-D.pdf
- Description:
- DC DC CONVERTER 1.8V
- Quantity:
- Payment:
- Shipping:
Inventory:1,886
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Product details
Overview
MEZD72402A-D from Monolithic Power Systems is a ready-to-use, synchronous step-down DC/DC power supply module delivering 2 A at 1.8 V output from a 4.5–36 V input. It integrates MOSFETs, controller, and compensation in a QFN-16 package with hiccup-mode short-circuit protection, ±2.5% output voltage accuracy, and 400 kHz switching frequency. Used in industrial control power rails requiring compact, pre-validated 1.8 V biasing.
For engineers reviewing the MEZD72402A-D datasheet, MEZD72402A-D pinout, MEZD72402A-D application, or MEZD72402A-D equivalent, key selection criteria include verified 1.8 V output stability under 2 A load, thermal derating behavior up to 85°C ambient, hiccup-mode fault response, and compatibility with 0402/0805/1206 passive footprints in DIY layout support.
Technical Context
This module implements a fixed-frequency current-mode synchronous buck converter with integrated high- and low-side MOSFETs, internal compensation, and power-good signaling. Input voltage range spans 4.5 V to 36 V, supporting 12 V and 24 V industrial bus systems.
Output voltage is factory-set to 1.8 V (suffix -D), with ±2.5% accuracy over line, load, and temperature. Protection features include thermal shutdown at 150°C, hiccup-mode short-circuit response, and over-/under-voltage lockout - all implemented without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V - supports 12 V/24 V industrial buses and tolerates automotive cold-crank dips down to 4.5 V |
| Output Voltage | 1.8 V (fixed) - factory-trimmed for FPGA core logic or low-voltage microcontroller I/O rails |
| Max Output Current | 2 A continuous - sustains full load at 85°C ambient with natural convection cooling |
| Switching Frequency | 400 kHz (typ.) - enables use of compact 5.6 µH shielded inductor and reduces EMI filtering burden |
| Output Voltage Accuracy | ±2.5% (typ.) - ensures reliable operation of 1.8 V digital ICs across temperature and line variation |
| Short-Circuit Response | Hiccup mode - limits average power dissipation during sustained fault, enabling safe auto-recovery |
| Thermal Shutdown | 150°C (rising) - protects silicon integrity during overload or airflow loss |
Pinout & Package
Package: QFN-16, 4 mm × 4 mm × 1.0 mm, exposed thermal pad (PGND-connected). RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 4.5–36 V; requires local 0.22 µF ceramic decoupling at pin |
| 2 (GND) | Power Ground | System power return; tied to exposed thermal pad for thermal conduction |
| 3 (VOUT) | Regulated Output | Delivers 1.8 V @ 2 A; requires 22 µF X7T/X5R ceramic output capacitance |
| 4–16 | NC / Thermal Pad / GND | Pins 4–15 are no-connect; Pin 16 is thermal pad (internally connected to PGND) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Buck Topology | Eliminates need for external MOSFET drivers and gate resistors; reduces BOM count by ≥7 components |
| Pre-Validated Layout & Open BOM | Includes Gerber files, test reports, and manufacturer-qualified 0402/0805/1206 passive list for rapid prototyping |
| Hiccup-Mode Short-Circuit Protection | Clamps fault current to <1.5 A average, preventing board damage during connector miswiring or PCB shorts |
| Wide Input Range (4.5–36 V) | Operates directly from unregulated 12 V or 24 V supplies without upstream pre-regulator |
| Thermal Derating Curve Provided | Clear output power vs. ambient temperature data (e.g., 100% power at ≤65°C, 50% at 105°C) for system-level thermal design |
Applications
| Industrial PLC I/O Module Power | FPGA Core Voltage Supply |
|---|---|
Use Scenario: Powering isolated 1.8 V digital I/O banks in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 24 V backplane to clean 1.8 V for level-shifting buffers and isolation drivers. Use Value: Delivers stable 1.8 V at 2 A with <26.4 mV ripple (24 VIN, full load), meeting FPGA I/O bank noise margin requirements. | Use Scenario: Providing core voltage to Xilinx Artix-7 or Intel Cyclone V FPGA banks requiring tight 1.8 V tolerance. IC Role / Device Role / Timing Role: Fixed-output synchronous buck module supplying FPGA core logic rail with fast transient response. Use Value: ±2.5% output accuracy and 0.75 ms rise time ensure reliable configuration and timing closure under dynamic load steps. |
| Smart Sensor Node Power | Motor Drive Control Logic Supply |
Use Scenario: Powering 1.8 V ADCs, wireless SoCs (e.g., TI CC2652), and signal-conditioning circuitry in battery-backed field sensors. IC Role / Device Role / Timing Role: Efficient step-down converter enabling >90% efficiency at 100 mA–2 A loads across wide input range. Use Value: 400 kHz switching allows small 5.6 µH inductor and 22 µF output cap, minimizing footprint in space-constrained enclosures. | Use Scenario: Generating 1.8 V logic supply for gate drivers and position encoder interfaces in 24 V brushless motor drives. IC Role / Device Role / Timing Role: Isolated auxiliary rail generator with hiccup-mode fault containment during IGBT shoot-through events. Use Value: Hiccup protection prevents thermal runaway when encoder cables short to chassis ground during maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530 | Successor part; same 4.5–36 V input, 2 A, but with 2.5 V to 15 V adjustable output and improved light-load efficiency | Requires external resistor divider for 1.8 V setting; lacks factory-trimmed 1.8 V option | Select MPM3530 only if adjustable output or extended temperature range (–40°C to +125°C) is required |
| TFS7702-1.8 | Fixed 1.8 V, 2 A module from Texas Instruments; 3.5–36 V input; 600 kHz switching; no hiccup mode (latch-off) | Latch-off short-circuit response requires manual reset; higher EMI due to 600 kHz frequency | Choose TFS7702-1.8 only if latch-off behavior aligns with system safety architecture |
Compared with MPM3530 and TFS7702-1.8, MEZD72402A-D provides factory-calibrated 1.8 V output with hiccup recovery-ideal for field-deployed equipment where automatic fault recovery and zero-configuration setup are mandatory.
Availability
MEZD72402A-D is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA core power, smart sensor nodes, and motor drive control logic requiring stable component supply and legacy design continuity.
Supply support for MEZD72402A-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, computing, and automotive markets.
The mEZD72402A series targets rapid deployment of reliable, pre-validated DC/DC solutions for engineers needing turnkey power conversion without layout risk or qualification overhead.
FAQ
Is MEZD72402A-D still in active production?
No - MEZD72402A-D is End-of-Life (EOL) per Monolithic Power Systems' official notice. 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 recommended input capacitor for MEZD72402A-D?
A 0.22 µF X5R ceramic capacitor (0402) placed within 2 mm of the VIN pin is mandatory. This value is validated in the reference design and ensures stable loop response and reduced high-frequency input ripple.
Can MEZD72402A-D be used with 48 V input?
No - absolute maximum input voltage is 36 V. Applying 48 V will cause immediate failure. For 48 V systems, consider the MPM3530 (4.5–60 V input) or discrete buck controller solutions with appropriate MOSFET ratings.
Does MEZD72402A-D require an external feedback resistor network?
No - output voltage is factory-trimmed to 1.8 V and non-adjustable. The device has no FB pin or external resistor connections; all compensation and regulation are fully internal.
How is thermal performance validated for MEZD72402A-D?
Thermal derating curves are published in the datasheet (Rev. 1.4, p.2), showing output power vs. ambient temperature under natural convection. At 85°C ambient, it delivers 2 A with 1.8 V output and <20°C case-to-ambient rise using the recommended PCB copper area.
What does "DIY" mean in the mEZD72402A product family?
"Do-It-Yourself" refers to Monolithic Power's open-design model: full Gerber files, BOM with manufacturer PNs, test reports, and layout guidelines are provided - enabling customers to manufacture identical boards at their own CM or internal fab.
Is there a power-good signal on MEZD72402A-D?
No - MEZD72402A-D does not include a power-good (PG) pin. Status monitoring must be implemented externally via output voltage sensing or downstream supervisor ICs.
MEZD72402A-D 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:
- 1.8V
- 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-D FAQ
1.How can I place an order for MEZD72402A-D through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD72402A-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 MEZD72402A-D reliable?
The price and inventory of MEZD72402A-D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD72402A-D is usually 5 days.
3.What payment methods are accepted for MEZD72402A-D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD72402A-D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD72402A-D?
MEZD72402A-D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD72402A-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 MEZD72402A-D?
For technical support, including MEZD72402A-D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD72402A-D requirements.
6.How does Aetrix verify that MEZD72402A-D is sourced from the original manufacturer or authorized distributors?
All MEZD72402A-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 MEZD72402A-D meets industry standards.
7.What is the process for return or replacement of MEZD72402A-D?
All MEZD72402A-D units undergo pre-shipment inspection (PSI). If there is an issue with MEZD72402A-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 MEZD72402A-D part is unused and in its original packaging.
Return procedure for MEZD72402A-D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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