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Monolithic Power Systems Inc. MEZD71202A-A
- Part No.:
- MEZD71202A-A
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD71202A-A.pdf
- Description:
- DC DC CONVERTER 1V
- Quantity:
- Payment:
- Shipping:
Inventory:2,539
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Product details
Overview
MEZD71202A-A from Monolithic Power Systems is a 2A, synchronous step-down DC/DC power supply module with fixed 1.0V output, 4.5–24V input range, ±2.5% output voltage accuracy, hiccup-mode short-circuit protection, and -40°C to +85°C operating temperature. It integrates power MOSFETs, inductor, and compensation circuitry for compact point-of-load regulation in industrial control and embedded power rails.
For engineers reviewing the MEZD71202A-A datasheet, MEZD71202A-A pinout, MEZD71202A-A application, or MEZD71202A-A equivalent, key selection criteria include input voltage headroom (VIN > VOUT + 1V), thermal derating above 65°C, load transient response (0.75ms rise time), and compatibility with 0402/0805/1206 passive footprints in DIY board integration.
Technical Context
The MEZD71202A-A implements a fully integrated buck converter architecture with internal high- and low-side MOSFETs, fixed-frequency 400kHz PWM control, and internal compensation. It operates in continuous conduction mode (CCM) across full 2A load range at 12V input and 1.0V output.
Protection features include over-current detection triggering hiccup-mode shutdown, over-temperature shutdown at 150°C, and under-voltage lockout (UVLO) with hysteresis. Output voltage is set by internal resistor divider; no external feedback required for fixed-output variants like -A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports 5V, 12V, and 24V industrial bus rails with ≥1V headroom over output |
| Output Voltage | 1.0V fixed - internally trimmed; eliminates external feedback network and saves PCB area |
| Max Output Current | 2A continuous - rated at full load with natural convection cooling up to 65°C ambient |
| Output Voltage Accuracy | ±2.5% (typ.) - ensures stable core voltage for low-power microcontrollers and FPGAs |
| Switching Frequency | 400kHz (typ.) - balances EMI performance and inductor size; enables use of ≤3.3µH shielded power inductors |
| Ripple Voltage | 33.6mV pk-pk @ 12VIN, 3.3VOUT, full load - measured with 2.2µF/10µF ceramic input/output caps |
| Thermal Shutdown | 150°C (OTP trip) - latches off until junction cools; prevents permanent damage during sustained overload |
Pinout & Package
FCQFN3x3-16 package with exposed thermal pad; 3.0mm × 3.0mm footprint, 0.75mm height, RoHS-compliant matte tin lead finish. Pin 1 marked by dot; pins arranged in 4×4 grid with corner thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 5, 8, 9, 12, 13, 16 | GND / PGND / AGND | Common ground return path; PGND carries high di/dt switch node current; AGND isolates analog feedback reference |
| 2 | VIN | Main input power rail connection; requires local 0.22µF ceramic decoupling per datasheet layout guidelines |
| 3 | VOUT | Regulated output node; connects directly to load; requires 22µF ceramic bulk capacitance per side |
| 6 | EN | Active-high enable input; pulled high internally; 1.2V threshold allows direct MCU GPIO control |
| 7 | PGND | Power ground for high-side switch; must be routed separately from AGND to minimize noise coupling |
| 10 | BST | Bootstrap capacitor connection (to SW); enables high-side MOSFET gate drive; requires 0.1µF X7R ceramic |
| 11 | SW | Switch node; connects to internal MOSFETs and external inductor; high dv/dt node requiring tight loop layout |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor | 3.3µH shielded power inductor embedded in module - eliminates external magnetics and reduces design iteration time |
| Hiccup Short-Circuit Protection | Auto-retry shutdown on sustained short - limits average power dissipation and prevents thermal runaway during fault conditions |
| Open Design Files | Gerber files, BOM, and schematic available from MPS - enables rapid validation and custom layout adaptation |
| Wide Input Range | 4.5V–24V operation - supports single module across multiple input rails without redesign (e.g., 5V logic, 12V motor, 24V industrial) |
| Natural Convection Rated | 2A output with no forced airflow - simplifies thermal management in sealed enclosures and space-constrained modules |
Applications
| Industrial PLC I/O Module | Low-Power FPGA Core Rail |
|---|---|
Use Scenario: Powering isolated digital I/O channels in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 1.0V core regulator for ARM Cortex-M7 microcontroller and level-shifting buffers. Use Value: Delivers clean, regulated 1.0V at 1.8A with <34mV ripple - meets tight noise budget for analog sensor interface circuits sharing same PCB. | Use Scenario: Supplying configurable logic fabric in Xilinx Artix-7 FPGA-based edge inference accelerators. IC Role / Device Role / Timing Role: Dedicated core voltage regulator with fast transient response for dynamic clock-gated logic blocks. Use Value: 0.75ms output rise time and ±1% load regulation ensure reliable startup and state retention during partial reconfiguration events. |
| Medical Sensor Node | Automotive Body Control Unit |
Use Scenario: Powering ultra-low-power biomedical signal acquisition ASICs in wearable ECG patches. IC Role / Device Role / Timing Role: Efficient 1.0V supply for mixed-signal front-end with integrated ADC and digital controller. Use Value: 90% peak efficiency at 0.5A and -40°C to +85°C rating support battery-operated, long-duration clinical monitoring. | Use Scenario: Regulating 1.0V for CAN FD transceiver PHY and microcontroller core in door module ECUs. IC Role / Device Role / Timing Role: Secondary point-of-load regulator downstream of main 5V/3.3V system rail. Use Value: Hiccup-mode protection prevents latch-up during load dump transients; 24V max input withstands automotive load-dump surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530GQV | Same manufacturer, pin-compatible successor; 4.5–24V input, 2A, 1.0V fixed, 1.2MHz switching frequency | Higher frequency enables smaller external components; improved light-load efficiency | Select for new designs requiring extended lifecycle support and reduced solution size |
| TPSM84203SILR | Texas Instruments 2A module; 4.5–17V input, 1.0V fixed, 1.2MHz, integrated inductor, different pinout and thermal pad layout | Lower max input voltage; requires PCB redesign; includes PMBus telemetry | Consider only if telemetry or TI ecosystem alignment outweighs redesign cost |
Compared with MPM3530GQV, MEZD71202A-A offers proven field reliability but lacks newer efficiency optimizations; versus TPSM84203SILR, it provides broader input range and simpler enable/control interface at the cost of telemetry capability.
Availability
MEZD71202A-A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, low-power FPGA core rails, medical sensor nodes, and automotive body control units requiring stable component supply despite end-of-life status.
Supply support for MEZD71202A-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 mEZD71202A series targets compact, easy-to-integrate DC/DC solutions for space-constrained embedded systems where layout simplicity and rapid prototyping are critical design goals.
FAQ
Is MEZD71202A-A still in production?
No - MEZD71202A-A is officially End-of-Life per Monolithic Power Systems documentation. MPS recommends migration to MPM3530GQV as the direct functional and pin-compatible replacement with active production status and extended support.
What is the recommended input capacitor for MEZD71202A-A?
MPS specifies a 0.22µF X5R ceramic capacitor (0402) placed adjacent to VIN pin, plus a 4.7µF X7R ceramic (1206) on the input net. These values minimize high-frequency switching noise and ensure stable operation across the full 4.5–24V input range.
Can MEZD71202A-A operate with 5V input?
Yes - the 4.5V minimum input allows reliable operation at 5V nominal, provided output voltage is ≥1.0V and VIN exceeds VOUT by at least 1V. At 5VIN/1.0VOUT, efficiency drops to ~78% at full 2A load due to reduced duty cycle headroom.
Does MEZD71202A-A require external feedback resistors?
No - MEZD71202A-A is a fixed-output variant (1.0V). Internal resistor divider sets output voltage; no external feedback network is needed or supported. Only adjustable versions (e.g., -X suffix with external resistor) require external resistors.
How is thermal performance affected above 65°C ambient?
Per MPS derating curve, output current must be linearly reduced from 2A at 65°C to zero at 125°C ambient. At 85°C, maximum continuous output is 1.4A with natural convection; forced airflow extends usable current range.
What is the purpose of the BST pin?
The BST (bootstrap) pin connects to a 0.1µF X7R ceramic capacitor between BST and SW. It supplies gate drive voltage for the internal high-side MOSFET. Incorrect BST capacitor placement or value causes erratic switching or startup failure.
Is the EN pin internally pulled up?
Yes - the EN pin has an internal pull-up to VCC. It requires no external pull-up resistor. Driving EN low (<0.4V) disables the regulator; leaving it open or tied high enables operation. Threshold is 1.2V typical, compatible with 1.8V and 3.3V GPIOs.
MEZD71202A-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):
- 24V
- 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:
- -
MEZD71202A-A FAQ
1.How can I place an order for MEZD71202A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD71202A-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 MEZD71202A-A reliable?
The price and inventory of MEZD71202A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD71202A-A is usually 5 days.
3.What payment methods are accepted for MEZD71202A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD71202A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD71202A-A?
MEZD71202A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD71202A-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 MEZD71202A-A?
For technical support, including MEZD71202A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD71202A-A requirements.
6.How does Aetrix verify that MEZD71202A-A is sourced from the original manufacturer or authorized distributors?
All MEZD71202A-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 MEZD71202A-A meets industry standards.
7.What is the process for return or replacement of MEZD71202A-A?
All MEZD71202A-A units undergo pre-shipment inspection (PSI). If there is an issue with MEZD71202A-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 MEZD71202A-A part is unused and in its original packaging.
Return procedure for MEZD71202A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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