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Monolithic Power Systems Inc. MEZD72402A-G
- Part No.:
- MEZD72402A-G
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD72402A-G.pdf
- Description:
- DC DC CONVERTER 5V
- Quantity:
- Payment:
- Shipping:
Inventory:1,204
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Product details
Overview
MEZD72402A-G from Monolithic Power Systems is a ready-to-use, synchronous step-down DC/DC power supply module delivering 2 A at 5.0 V output from a 4.5–36 V input. It integrates MOSFETs, controller, and compensation in a QFN-16 package, features hiccup-mode short-circuit protection, ±2.5% output voltage accuracy, and operates across –40°C to +85°C ambient for industrial power rails.
For engineers reviewing the MEZD72402A-G datasheet, MEZD72402A-G pinout, MEZD72402A-G application, or MEZD72402A-G equivalent, key selection criteria include input voltage range (4.5–36 V), fixed 5.0 V output, 2 A continuous load capability, thermal derating behavior, and EOL status requiring migration planning to MPM3530.
Technical Context
This module implements a constant-on-time (COT) controlled synchronous buck converter with integrated high- and low-side MOSFETs. It supports fixed-output variants only (no external feedback resistor network), uses ceramic output capacitors (22 µF ×2), and relies on internal compensation tuned for stability with 5.6 µH inductors and specified capacitor ESR ranges.
Thermal management is handled via bottom-exposed thermal pad connected to PGND and AGND planes; power derating begins at 65°C ambient under natural convection. Protection includes over-temperature shutdown at 150°C, hiccup-mode short-circuit response, and input under-voltage lockout below VIN_MIN = VOUT + 1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V - Supports 12 V and 24 V industrial bus rails with ≥1 V headroom above output. |
| Output Voltage | 5.0 V (fixed) - Factory-set; no external feedback required; ±2.5% accuracy ensures stable MCU core or I/O rail compliance. |
| Max Output Current | 2 A continuous - Sustained delivery under full load at ≤65°C ambient with recommended PCB layout and airflow. |
| Switching Frequency | 400 kHz typical - Enables compact magnetics (e.g., 5.6 µH shielded inductor) and predictable EMI filtering design. |
| Output Ripple | 26.4 mV peak-to-peak @ VIN=24 V, VOUT=3.3 V, full load - Measured with specified 22 µF ×2 ceramic output caps; scales with VOUT. |
| Protection Features | Hiccup-mode short-circuit, OTP (150°C), OVP/UVP - Automatically recovers after fault removal; prevents latch-up or thermal runaway. |
| Operating Temp | –40°C to +85°C ambient - Rated for uncontrolled industrial enclosures; derates linearly above 65°C per published curve. |
Pinout & Package
Package: QFN-16 (4 mm × 4 mm × 1.0 mm), thermally enhanced with exposed PGND/AGND pad on bottom surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Primary DC input connection; requires local 0.22 µF ceramic decoupling and bulk capacitance upstream. |
| 2 (GND) | Power Ground | PGND node tied to thermal pad; must be low-inductance plane connection for switch-node integrity. |
| 3 (VOUT) | Regulated Output | Stable 5.0 V source; routed with low-impedance path to load; filtered by dual 22 µF ceramic caps. |
| 4–16 | NC / Thermal Pad / GND | Pins 4–15 are no-connect or internal; Pin 16 is part of thermal pad-must be soldered to solid ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | High- and low-side MOSFETs, driver, and gate control co-packaged - eliminates external FET selection and layout sensitivity. |
| Open Design Files | Gerber files, BOM, and schematic provided - enables rapid validation, layout reuse, and custom mechanical integration. |
| Wide Input Range | 4.5–36 V operation - accommodates automotive battery transients (load dump), 12/24 V industrial systems, and brownout resilience. |
| Hiccup Short-Circuit Response | Auto-retry current limiting - maintains system safety without manual reset; avoids thermal stress during sustained faults. |
| Thermal Derating Curve | Published ambient vs. output power graph - enables precise thermal margining for sealed enclosures without forced air. |
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 5 V rail generator for microcontroller peripherals and level-shifting logic. Use Value: Delivers clean, regulated 5 V at 2 A with hiccup protection-prevents field failures due to wiring shorts in factory-floor environments. | Use Scenario: Supplying 5 V to CAN transceivers, LIN interface ICs, and LED drivers in non-safety-critical vehicle subsystems. IC Role / Device Role / Timing Role: Secondary DC/DC stage converting 12 V battery to stable 5 V for communication and lighting functions. Use Value: Withstands 36 V load-dump transients and operates down to –40°C-meets automotive ambient and surge requirements without external TVS. |
| Medical Diagnostic Sensor Hub | Outdoor Wireless Gateway |
Use Scenario: Providing noise-sensitive 5 V bias to precision ADC front-ends and optical sensor arrays in portable diagnostic tools. IC Role / Device Role / Timing Role: Low-noise, fixed-output power source with minimal ripple (<30 mV) for analog signal chain integrity. Use Value: Ceramic-capacitor-based output filter and COT control yield low EMI and fast transient response-preserves SNR in sub-mV measurement paths. | Use Scenario: Powering 5 V radios, GPS modules, and cellular modems in IP66-rated outdoor enclosures with wide ambient swings. IC Role / Device Role / Timing Role: Main 5 V supply for wireless connectivity stack operating across –40°C to +70°C ambient. Use Value: Verified thermal derating curve allows accurate lifetime estimation in passive-cooled housings-supports 10+ year field deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output DC/DC module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530GQV-5.0 | Same manufacturer, newer generation; 4.5–36 V input, 5 V/3 A output, 1.2 MHz switching frequency, smaller 3 mm × 4 mm QFN. | Higher current, higher frequency, tighter regulation (±1%), but requires updated layout and inductor selection. | Preferred for new designs needing higher density or headroom; pinout and footprint differ. |
| TSM12050 | 4.5–36 V input, 5 V/2 A, SIP-3 package; no enable or power-good; lower efficiency (~90% at 1 A). | Through-hole mounting, no thermal pad, simpler layout but limited thermal performance above 60°C ambient. | Suitable for cost-sensitive, low-volume, or space-constrained through-hole assemblies where thermal margin is less critical. |
Compared with MEZD72402A-G, MPM3530GQV-5.0 offers higher current and frequency in a smaller footprint but demands layout revision, while TSM12050 trades thermal performance and feature set for mechanical simplicity and legacy compatibility.
Availability
MEZD72402A-G is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical sensor hubs, and outdoor wireless gateways requiring stable component supply despite end-of-life status.
Supply support for MEZD72402A-G 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 applications.
The mEZD72402A series belongs to MPS's ready-to-use power module product line, designed to accelerate time-to-power for engineers needing validated, drop-in DC/DC solutions without custom regulator design.
FAQ
Is MEZD72402A-G still in active production?
No. MEZD72402A-G is officially marked End-of-Life (EOL) by Monolithic Power Systems, with migration guidance pointing to MPM3530GQV-5.0 as the designated replacement. Aetrix Electronics holds final-buy inventory and supports legacy design continuity through coordinated obsolescence management.
What is the recommended input capacitor configuration?
The reference design specifies a 0.22 µF X5R ceramic capacitor (0402) placed directly at the VIN pin, plus bulk capacitance upstream (e.g., 10 µF–47 µF). This combination suppresses high-frequency switching noise and maintains stable input impedance across the 4.5–36 V range.
Can MEZD72402A-G be used with an output voltage other than 5.0 V?
No. MEZD72402A-G is a fixed-output variant (suffix 'G' = 5.0 V). Other output voltages (1.0–3.3 V) require different part numbers (e.g., MEZD72402A-F for 3.3 V). The device lacks external feedback pins and cannot be adjusted.
Does it require an external enable signal to operate?
No. MEZD72402A-G has no EN pin and powers up automatically when VIN exceeds UVLO threshold (~4.2 V). It lacks programmable sequencing or remote on/off control-operation is strictly input-dependent.
What is the thermal pad soldering requirement?
The exposed thermal pad (pins 4–15 and underside) must be fully soldered to a dedicated, low-thermal-resistance PGND/AGND copper plane. Minimum 90% solder coverage is required to meet published thermal derating curves and prevent junction temperature exceedance at full load.
How does hiccup-mode protection behave during a short circuit?
Upon output short, the module shuts down, waits ~100 ms, then attempts restart. If the fault persists, it repeats the cycle indefinitely-limiting average power dissipation to safe levels and preventing damage to internal MOSFETs or PCB traces.
Is there a power-good indicator signal?
No. MEZD72402A-G does not include a power-good (PG) pin or flag. System-level monitoring of output voltage stability must be implemented externally using a supervisor IC or ADC sampling of VOUT.
MEZD72402A-G 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):
- 6.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 5V
- 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-G FAQ
1.How can I place an order for MEZD72402A-G through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD72402A-G 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-G reliable?
The price and inventory of MEZD72402A-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD72402A-G is usually 5 days.
3.What payment methods are accepted for MEZD72402A-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD72402A-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD72402A-G?
MEZD72402A-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD72402A-G 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-G?
For technical support, including MEZD72402A-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD72402A-G requirements.
6.How does Aetrix verify that MEZD72402A-G is sourced from the original manufacturer or authorized distributors?
All MEZD72402A-G 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-G meets industry standards.
7.What is the process for return or replacement of MEZD72402A-G?
All MEZD72402A-G units undergo pre-shipment inspection (PSI). If there is an issue with MEZD72402A-G, 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-G part is unused and in its original packaging.
Return procedure for MEZD72402A-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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