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Monolithic Power Systems Inc. MEZD71203A-C
- Part No.:
- MEZD71203A-C
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 3-SIP Module
- Datasheet:
-
MEZD71203A-C.pdf
- Description:
- DC DC CONVERTER 1.5V
- Quantity:
- Payment:
- Shipping:
Inventory:2,719
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Product details
Overview
MEZD71203A-C from Monolithic Power Systems is a 3A, synchronous step-down DC/DC power supply module with fixed 1.5V output, 5–16V input range, ±2.5% output voltage accuracy, 400kHz switching frequency, and hiccup-mode short-circuit protection-designed for compact industrial control power rails.
For engineers reviewing the MEZD71203A-C datasheet, MEZD71203A-C pinout, MEZD71203A-C application, or MEZD71203A-C equivalent, key selection criteria include input voltage headroom (VIN > VOUT +1V), thermal derating above 85°C ambient, load regulation stability under 3A step transients, and compatibility with 0805/1206 external ceramic output capacitors.
Technical Context
The MEZD71203A-C integrates a controller, power MOSFETs, and compensation into a fully shielded FCQFN3x3-16 package. It operates in forced PWM mode with internal 400kHz oscillator and supports output voltages selectable at manufacturing via laser-trimmed feedback network (C option = 1.5V).
Thermal management relies on exposed thermal pad connected to PGND and AGND planes; over-temperature protection triggers at 150°C with automatic recovery. Input line regulation is ±1% over 5–16V, and load regulation holds ±1% from 0.1A to 3A at 3.3V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 16V - requires ≥1V headroom above VOUT; invalid below 5V or above 16V absolute max |
| Output Voltage | 1.5V (fixed, factory-set) - trimmed during production; not adjustable in-circuit |
| Max Output Current | 3A continuous - derates linearly above 85°C ambient per published power curve |
| Switching Frequency | 400kHz typical - enables use of compact 3.3µH inductor and low-ESR ceramic output caps |
| Output Voltage Accuracy | ±2.5% at 25°C - includes initial tolerance, line/load/temperature drift combined |
| Short-Circuit Response | Hiccup mode - cycles ON/OFF with ~100ms off-time until fault clears |
| Operating Temp Range | −40°C to +85°C - full spec guaranteed; OTP trips at 150°C junction temperature |
Pinout & Package
FCQFN3x3-16 package with wettable flank leads and integrated thermal pad (exposed die attach area). Dimensions: 3.0mm × 3.0mm × 1.0mm height. Pin 1 marked by dot; top-side silkscreen indicates VIN, GND, VOUT labels.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 5, 6, 9, 10, 11, 14, 15, 16 | PGND / AGND | Power and analog ground return paths - must be connected to common low-impedance PCB plane |
| 2 | VIN | Main input supply - decoupled externally with 0.22µF (C1) and bulk capacitance |
| 3 | VOUT | Regulated 1.5V output - routed with low-inductance trace to load; filtered by 22µF (C3/C4) |
| 7, 8, 12, 13 | Thermal Pad | Internal die attach - soldered to solid copper pour for thermal conduction and EMI shielding |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous FETs | Eliminates need for external high-side/low-side MOSFETs and gate drivers |
| Open Design Files & BOM | Gerber, schematic, and validated bill-of-materials available from MPS upon request |
| Wide Input Range (5–16V) | Supports 12V rail systems with brown-out margin and accommodates automotive transients up to 16V |
| Hiccup Short-Circuit Protection | Prevents thermal runaway during sustained overload while enabling self-recovery without manual reset |
| Over-/Under-Voltage Lockout | Disables operation if VIN falls below 4.5V or exceeds 16.5V - protects internal circuitry |
Applications
| Industrial PLC I/O Module | Embedded Vision Sensor Node |
|---|---|
Use Scenario: Powering FPGA I/O banks and isolated digital interfaces in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 1.5V core supply for configurable logic blocks requiring tight voltage tolerance and fast transient response. Use Value: ±2.5% accuracy and ±1% load regulation ensure stable I/O signaling across 0–3A dynamic current steps. | Use Scenario: Supplying image sensor analog front-end and MIPI CSI-2 serializer in compact edge cameras. IC Role / Device Role / Timing Role: Dedicated low-noise 1.5V rail decoupled from noisy digital domains using separate AGND/PGND routing. Use Value: Integrated shielding and 400kHz fixed frequency simplify EMI filtering versus variable-frequency alternatives. |
| Medical Patient Monitor Display | Automotive Body Control Module |
Use Scenario: Generating 1.5V for LCD bias and touch controller ASIC in battery-backed portable monitors. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 12V main supply; supports cold-cranking down to 5V input. Use Value: 5–16V input range maintains regulation during vehicle start-stop events without external pre-regulator. | Use Scenario: Powering CAN transceiver logic and microcontroller peripherals in under-hood ECUs. IC Role / Device Role / Timing Role: Compact, thermally robust point-of-load converter mounted near load to minimize IR drop. Use Value: FCQFN3x3-16 footprint and thermal pad enable direct mounting to heatsinked metal chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3530GQV | Same manufacturer, newer generation; 4.5–18V input, 3A, 1.5V fixed, 1.2MHz switching, smaller 2.5×2.5mm QFN | Higher frequency allows smaller inductor (1.5µH); tighter output accuracy (±1.5%) | Select for space-constrained designs needing improved efficiency above 1A and faster transient response |
| TPSM84203A | Texas Instruments; 4.5–17V input, 3A, 1.5V fixed, 500kHz, integrated inductor, larger 7.5×7.5mm module | Includes shielded inductor; higher thermal resistance (45°C/W vs. 32°C/W) | Select when board-level EMI filtering is impractical and full magnetic shielding is required |
Compared with MEZD71203A-C, MPM3530GQV offers higher integration density and better light-load efficiency, while TPSM84203A trades size for simplified layout and inherent inductor EMI containment-both require PCB redesign due to non-pin-compatible footprints.
Availability
MEZD71203A-C is available at Aetrix Electronics and suitable for industrial automation, embedded vision systems, and medical display power supplies requiring stable component supply despite end-of-life status.
Supply support for MEZD71203A-C 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 mEZD71203A series targets cost-sensitive, space-constrained DC/DC conversion where rapid design-in and open reference layouts reduce time-to-market for mid-power embedded systems.
FAQ
Is MEZD71203A-C still in production?
No - MEZD71203A-C is officially End-of-Life per MPS documentation dated February 2018. Aetrix Electronics maintains limited legacy stock and supports last-time buys with full traceability and extended warranty terms for qualified industrial programs.
Can output voltage be adjusted externally?
No - MEZD71203A-C has factory-laser-trimmed feedback resistors for fixed 1.5V output. There are no external resistor pads or pins for adjustment; changing output voltage requires selecting a different variant (e.g., MEZD71203A-F for 3.3V).
What is the recommended input capacitor configuration?
MPS specifies a 0.22µF X5R 0402 ceramic capacitor (C1) placed within 2mm of VIN pin, plus bulk capacitance (≥10µF) elsewhere on the 5–16V rail. Total input RMS current rating must exceed 1.8A to handle 400kHz ripple.
Does it support remote sensing?
No - MEZD71203A-C lacks dedicated sense pins. Output voltage regulation is local to the module's VOUT pin; PCB trace resistance between VOUT and load causes proportional voltage drop not compensated by internal feedback.
How does hiccup-mode protection behave under sustained short?
Upon short-circuit detection, the device disables switching, waits ~100ms, then attempts restart. If fault persists, it repeats the cycle indefinitely - drawing <100µA average current - until short is removed or input is cycled.
Is the thermal pad electrically connected?
Yes - the exposed thermal pad is internally connected to PGND. It must be soldered to a dedicated PGND copper pour with ≥6 thermal vias (0.3mm diameter) to inner ground layers to meet thermal and reliability specifications.
What is the minimum load requirement?
None - MEZD71203A-C operates down to zero load. No minimum current is specified; light-load efficiency drops but regulation remains within ±2.5% accuracy limit across full temperature range.
MEZD71203A-C 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):
- 5V
- Voltage - Input (Max):
- 16V
- Voltage - Output 1:
- 1.5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 3A
- 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:
- -
MEZD71203A-C FAQ
1.How can I place an order for MEZD71203A-C through Aetrix?
Please submit a Request for Quotation (RFQ) for MEZD71203A-C 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 MEZD71203A-C reliable?
The price and inventory of MEZD71203A-C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEZD71203A-C is usually 5 days.
3.What payment methods are accepted for MEZD71203A-C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEZD71203A-C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEZD71203A-C?
MEZD71203A-C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEZD71203A-C 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 MEZD71203A-C?
For technical support, including MEZD71203A-C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEZD71203A-C requirements.
6.How does Aetrix verify that MEZD71203A-C is sourced from the original manufacturer or authorized distributors?
All MEZD71203A-C 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 MEZD71203A-C meets industry standards.
7.What is the process for return or replacement of MEZD71203A-C?
All MEZD71203A-C units undergo pre-shipment inspection (PSI). If there is an issue with MEZD71203A-C, 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 MEZD71203A-C part is unused and in its original packaging.
Return procedure for MEZD71203A-C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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