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Monolithic Power Systems Inc. MID02W0303AGY-2R-Z
- Part No.:
- MID02W0303AGY-2R-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MID02W0303AGY-2R-Z.pdf
- Description:
- 0.25W, 1.5KVDC, REGULATED, ISOLA
- Quantity:
- Payment:
- Shipping:
Inventory:4,159
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Product details
Overview
MID02W0303AGY-2R-Z from Monolithic Power Systems is a regulated, isolated 3.3V-output DC/DC converter delivering up to 0.25W across a 3V–3.6V input range, featuring 1.5kVDC isolation, ±0.2% load regulation, and operation from –40°C to +125°C. It integrates power MOSFET, transformer, and feedback circuitry in a single SOICW-16 package for industrial isolated bias supply applications.
For engineers reviewing the MID02W0303AGY-2R-Z datasheet, MID02W0303AGY-2R-Z pinout, MID02W0303AGY-2R-Z application, or MID02W0303AGY-2R-Z equivalent, key selection criteria include input voltage compatibility (3–3.6V), output stability under transient load (≤0.2% load regulation), thermal shutdown threshold (160°C), isolation compliance (UL1577, IEC62368-1), and PCB layout constraints for EMI control (e.g., SGND2 thin-trace routing).
Technical Context
This monolithic isolated DC/DC converter uses an internal AC/DC encode-decode architecture with integrated transformer and feedback loop to maintain tight 3.3V output regulation without external optocouplers or secondary-side controllers. Its hiccup-mode short-circuit protection and 15ms soft-start sequence ensure robust startup and fault recovery.
The device separates primary and secondary grounds via dedicated PGND1/SGND1 (input side) and PGND2/SGND2 (output side) pins, enforcing ≥8mm creepage/clearance and limiting inter-side capacitance to 7pF. Thermal shutdown activates at 160°C with 20°C hysteresis, and efficiency peaks at 50% under full 75mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 3.6V - supports standard 3.3V rail with 10% tolerance; UVLO rising threshold at 2.61V prevents erratic startup. |
| Output Voltage | 3.3V ±0.05V (±1.5%) - guaranteed accuracy over full temperature and load range enables direct powering of digital isolators and RS-485 transceivers. |
| Isolation Voltage | 1.5kVDC - certified per UL1577 and IEC62368-1; meets reinforced insulation requirements for industrial safety standards. |
| Output Power | 0.25W max (75mA @ 3.3V) - sufficient for biasing dual-channel digital isolators or low-power CAN/RS-422 transceivers. |
| Load Regulation | 0.2% - ensures ≤6.6mV output deviation from 0 to 75mA load, critical for precision analog sensor front-ends. |
| Line Regulation | 0.1% - maintains ≤3.3mV output variation across full 3V–3.6V input range, eliminating need for post-regulation LDOs. |
| Efficiency | 50% at full load - optimized for ultra-low quiescent current in always-on isolated subsystems where thermal dissipation is constrained. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive modules and industrial PLC backplanes without derating. |
Pinout & Package
Available in a low-profile SOICW-16 package (wide-body, 10.3mm × 10.3mm × 2.65mm) with exposed thermal pad on underside for enhanced heat dissipation. Pin 1 identification marked via notch or dot; JEDEC MS-013 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | PGND1 | Primary-side power ground - requires large copper pour and multiple vias to PGND1 plane for thermal management and noise suppression. |
| 3, 4 | VIN | Input power terminal - connect 10μF + 0.1μF decoupling capacitors directly between VIN and PGND1 to stabilize switching node. |
| 5–8 | SGND1 | Primary-side signal ground - tie to PGND1 with wide copper trace to minimize ground bounce during switching transitions. |
| 9–12 | SGND2 | Secondary-side signal ground - connect to PGND2 via thin trace only to prevent EMI coupling; avoid large copper areas. |
| 13, 14 | VOUT | Regulated 3.3V output - place 10μF + 0.1μF capacitors between VOUT and PGND2; ripple <80mV ensures clean bias for sensitive receivers. |
| 15, 16 | PGND2 | Secondary-side power ground - isolate from SGND2 with thin trace; do not use large copper pour to limit common-mode noise radiation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated transformer & MOSFET | Eliminates external magnetics and gate drivers - reduces BOM count by ≥7 components and board area by >40% vs. discrete isolated flyback designs. |
| Hiccup-mode SCP | Auto-recovery after 150ms off-time - sustains safe operation during intermittent shorts without latch-up or manual reset. |
| CISPR32 Class B compliance | Verified radiated emissions <40dBuV/m at 3m - achieved via internal Y-capacitor formation using overlapping PCB mid-layers and ferrite CLC filter. |
| Thermal shutdown with hysteresis | 160°C trip / 140°C recovery - prevents thermal runaway while allowing graceful recovery after transient overload or ambient rise. |
| Under-voltage lockout | 2.61V rising threshold with 190mV hysteresis - ensures reliable start-up only when input rail is stable, avoiding brown-out oscillation. |
Applications
| Isolated Bias for Digital Isolators | RS-485/RS-422 Transceiver Bias |
|---|---|
|
Use Scenario: Providing independent 3.3V bias to ADuM series or Si86xx digital isolators in PLC I/O modules. IC Role / Device Role / Timing Role: Primary-side isolated power source enabling galvanic separation between microcontroller and field-side peripherals. Use Value: Eliminates need for external isolated DC/DC modules; 0.2% load regulation ensures consistent logic thresholds across temperature and load. |
Use Scenario: Powering isolated RS-485 transceivers (e.g., MAX14870, SN65HVD230) in factory automation networks. IC Role / Device Role / Timing Role: Secondary-side regulated supply maintaining driver/receiver VCC stability during bus contention and ESD events. Use Value: 1.5kVDC isolation and 8mm creepage meet IEC61000-4-5 surge immunity requirements; 50% efficiency minimizes self-heating in sealed enclosures. |
| CAN Interface Isolation | Industrial Sensor Signal Conditioning |
|
Use Scenario: Supplying isolated 3.3V to CAN FD transceivers (e.g., TCAN1042, TJA1044) in motor drive control units. IC Role / Device Role / Timing Role: Galvanically separated bias rail preventing ground-loop currents from corrupting high-speed CAN timing integrity. Use Value: 0.1% line regulation ensures stable transceiver operation across battery voltage fluctuations (e.g., 12V system sag to 9V). |
Use Scenario: Powering isolated bridge sensors or RTD front-ends in hazardous-area temperature monitoring systems. IC Role / Device Role / Timing Role: Low-noise, thermally stable 3.3V source for precision ADC reference and excitation circuits. Use Value: 40–80mV output ripple and –40°C to +125°C operation enable sub-0.1% measurement accuracy in uncontrolled environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RECOM RxxPxx Series (e.g., R1SX-0505-P) | 5V input, 5V output; 1W output power; through-hole DIP-24 package; no integrated feedback loop. | Requires external optocoupler and compensation network; larger footprint; higher efficiency (80%) but lower temperature rating (–40°C to +105°C). | Select when higher output power or wider input range is required; not drop-in due to different pinout, regulation method, and thermal profile. |
| Analog Devices ADuM5020 | 5V input, 5V output; 0.5W; integrated iCoupler® isolation; 16-pin SOIC; 50% efficiency at full load. | Uses magnetic isolation instead of transformer-based topology; lacks hiccup-mode SCP; rated for –40°C to +105°C only. | Choose for tighter integration with ADI's isolated gate drivers or when leveraging existing iCoupler ecosystem; verify thermal margin at 125°C. |
Compared with RECOM R1SX-0505-P and ADuM5020, MID02W0303AGY-2R-Z offers superior high-temperature operation (125°C), built-in hiccup protection, and smaller SOICW-16 footprint-making it optimal for space-constrained, thermally demanding industrial nodes where 3.3V bias is mandatory.
Availability
MID02W0303AGY-2R-Z is available at Aetrix Electronics and suitable for industrial automation systems, isolated sensor power supplies, and telecom network gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MID02W0303AGY-2R-Z 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, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
This device belongs to MPS's MID series of monolithic isolated DC/DC converters-designed specifically to replace discrete isolated power solutions in space- and reliability-critical industrial and automotive applications.
FAQ
What is the maximum continuous output current supported by MID02W0303AGY-2R-Z?
The device delivers up to 75mA continuously at 3.3V output (0.25W), verified across –40°C to +125°C. Output current is limited by internal thermal protection: junction temperature must remain below 150°C, and thermal shutdown triggers at 160°C. Derating is not required within the specified ambient range when PCB layout follows MPS guidelines (e.g., adequate PGND1 copper area).
Does MID02W0303AGY-2R-Z require external feedback components?
No. The device integrates a complete closed-loop regulation system-including internal error amplifier, reference, and transformer-coupled feedback path-eliminating the need for external optocouplers, TL431 shunt regulators, or compensation networks. Output voltage is factory-trimmed to 3.3V ±0.05V and remains stable without user-adjustable components.
How does the hiccup-mode short-circuit protection operate?
When VOUT fails to reach 2.61V after the 15ms internal soft-start period-indicating a short or excessive capacitive load-the device enters hiccup mode: it disables switching for ~150ms, then re-attempts soft-start. This cycle repeats until fault clearance, limiting average power dissipation to <100mW and preventing thermal damage without requiring external reset circuitry.
Can MID02W0303AGY-2R-Z be used with input voltages below 3V?
No. The under-voltage lockout (UVLO) rising threshold is 2.61V, but the device is only characterized and guaranteed for stable operation between 3V and 3.6V. Operation below 3V may result in insufficient gate drive, unstable regulation, or failure to sustain output under load-even if VIN exceeds UVLO. Designers must ensure minimum system rail voltage stays ≥3V.
What are the PCB layout requirements to meet CISPR32 Class B emissions?
To achieve Class B compliance, implement a 4-layer board with overlapping mid-layer planes forming a low-ESL Y-capacitor (PGND1 top plate, GND2 bottom plate), place ferrite beads (BLM18HE102) in series with VOUT/PGND2, and route SGND2 to PGND2 via a thin trace (<0.2mm width). Avoid large copper pours on secondary-side pins and maintain ≥8mm creepage between primary and secondary sections.
Is MID02W0303AGY-2R-Z compatible with lead-free reflow soldering?
Yes. The SOICW-16 package is rated for JEDEC J-STD-020 moisture sensitivity level (MSL) 3 and supports standard lead-free reflow profiles with peak temperature up to 260°C. The device is RoHS-compliant, halogen-free, and qualified for Pb-free assembly per IPC/JEDEC J-STD-020 Rev F.
How does the isolation barrier withstand voltage stress over time?
The 1.5kVDC rating is validated per UL1577 (1-minute test at 1.5kVDC) and IEC62368-1 (1.2×1.5kVDC for 1 second, 100% production test). Input-to-output resistance exceeds 50GΩ and capacitance is limited to 7pF, ensuring long-term dielectric integrity. No derating is required for typical industrial operating lifetimes when creepage/clearance rules are followed.
MID02W0303AGY-2R-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Isolated Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output 1:
- 3.3V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 75mA
- Power (Watts):
- 250 mW
- Voltage - Isolation:
- 1.5 kV
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output
- Operating Temperature:
- -40°C ~ 125°C (With Derating)
- Efficiency:
- 50%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Control Features:
- -
- Approval Agency:
- CB
- Standard Number:
- 62368-1
MID02W0303AGY-2R-Z FAQ
1.How can I place an order for MID02W0303AGY-2R-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MID02W0303AGY-2R-Z 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 MID02W0303AGY-2R-Z reliable?
The price and inventory of MID02W0303AGY-2R-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MID02W0303AGY-2R-Z is usually 5 days.
3.What payment methods are accepted for MID02W0303AGY-2R-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MID02W0303AGY-2R-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MID02W0303AGY-2R-Z?
MID02W0303AGY-2R-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MID02W0303AGY-2R-Z 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 MID02W0303AGY-2R-Z?
For technical support, including MID02W0303AGY-2R-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MID02W0303AGY-2R-Z requirements.
6.How does Aetrix verify that MID02W0303AGY-2R-Z is sourced from the original manufacturer or authorized distributors?
All MID02W0303AGY-2R-Z 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 MID02W0303AGY-2R-Z meets industry standards.
7.What is the process for return or replacement of MID02W0303AGY-2R-Z?
All MID02W0303AGY-2R-Z units undergo pre-shipment inspection (PSI). If there is an issue with MID02W0303AGY-2R-Z, 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 MID02W0303AGY-2R-Z part is unused and in its original packaging.
Return procedure for MID02W0303AGY-2R-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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