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Monolithic Power Systems Inc. MID04W0503AGY-3R-P
- Part No.:
- MID04W0503AGY-3R-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MID04W0503AGY-3R-P.pdf
- Description:
- 0.4W, 3KVDC, REGULATED, ISOLATED
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MID04W0503AGY-3R-P from Monolithic Power Systems is a regulated, isolated 0.4W DC/DC converter delivering 3.3V output from a 4.5–5.5V input, featuring 3kVDC isolation, -40°C to +125°C operation, and integrated MOSFET/transformer/FB circuitry. It serves as bias power for isolated interfaces in industrial automation and telecom systems.
For engineers reviewing the MID04W0503AGY-3R-P datasheet, MID04W0503AGY-3R-P pinout, MID04W0503AGY-3R-P application, or MID04W0503AGY-3R-P equivalent, key selection criteria include isolation voltage rating (3kVDC), load regulation (0.3%), line regulation (0.1%), thermal shutdown threshold (160°C), and SOICW-16 package compatibility with high-reliability isolated power designs.
Technical Context
The MID04W0503AGY-3R-P implements an integrated flyback topology with internal primary-side MOSFET, transformer, and feedback control loop-enabling regulation without external optocouplers or secondary-side sensing. Its hiccup-mode short-circuit protection activates after 15ms soft-start if VOUT fails to reach 2.61V.
It achieves isolation via internal transformer winding insulation rated to 3kVDC (1s test at 3.6kVDC), with input-to-output capacitance of 7pF and resistance >50GΩ. Thermal shutdown engages at 160°C with 20°C hysteresis, and UVLO thresholds are 2.61V (rising) with 190mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 5.5V - supports stable operation across standard 5V rail tolerances including USB PD and industrial 5V supplies. |
| Output Voltage | 3.3V ±0.05V - tightly regulated for powering digital isolators, RS-485 transceivers, and CAN PHYs without external LDO. |
| Isolation Voltage | 3kVDC - meets reinforced insulation requirements per IEC62368-1 for industrial and telecom safety-critical applications. |
| Output Power | 0.4W max - sufficient for biasing up to two dual-channel digital isolators or one quad-channel RS-485 transceiver. |
| Load Regulation | 0.3% - ensures <±10mV output deviation from 0A to 120mA load, critical for precision analog sensor front-ends. |
| Line Regulation | 0.1% - maintains output stability despite ±10% input variation, eliminating need for upstream pre-regulation. |
| Efficiency | 38% at full load - optimized for low-power isolated bias where thermal footprint and EMI compliance outweigh peak efficiency. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive modules, 5G RRUs, and factory-floor PLCs without derating. |
Pinout & Package
Package: SOICW-16 (wide-body, 10.3mm × 7.5mm × 2.33mm), RoHS-compliant, MSL Level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | PGND1 | Primary-side power ground - requires large copper pour and multiple vias for thermal dissipation and noise control. |
| 3, 4 | VIN | 4.5–5.5V input - must be decoupled with 10μF + 0.1μF capacitors placed adjacent to pins to suppress switching noise. |
| 5–8 | SGND1 | Primary-side signal ground - tied to PGND1 with wide traces to minimize ground bounce in feedback path. |
| 9–12 | SGND2 | Secondary-side signal ground - connected to PGND2 via thin trace only to limit EMI coupling across isolation barrier. |
| 13, 14 | VOUT | Regulated 3.3V output - requires local 10μF + 0.1μF decoupling to PGND2; ripple ≤100mV over full load range. |
| 15, 16 | PGND2 | Secondary-side power ground - kept isolated from SGND2 with minimal copper area to reduce 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 PCB area by >40% vs discrete isolated solutions. |
| Hiccup-mode SCP | Auto-recovery after 150ms off-time - prevents thermal runaway during sustained shorts while enabling self-clearing fault conditions. |
| CISPR32 Class B compliance | Verified radiated emissions <40dBuV/m at 3m - enables direct integration into EMI-sensitive network gateways without added filtering. |
| UL1577 & CB certified | Meets global safety standards for reinforced insulation - eliminates need for system-level certification retesting when used per datasheet layout guidelines. |
| Thermal shutdown with hysteresis | 160°C trip / 140°C recovery - protects against sustained overload or poor heatsinking while avoiding oscillation near thermal limit. |
Applications
| Industrial Sensor Isolation | RS-485/RS-422 Bias Supply |
|---|---|
|
Use Scenario: Powering isolated analog front-ends for pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Provides galvanically isolated 3.3V bias to ADC driver stages and digital isolators, breaking ground loops. Use Value: Enables ±0.1% measurement accuracy by eliminating common-mode noise injection from motor drives and VFDs. |
Use Scenario: Supplying isolated VCC to half-duplex RS-485 transceivers in distributed I/O modules. IC Role / Device Role / Timing Role: Delivers clean, regulated 3.3V to transceiver logic and driver stages across isolation barrier. Use Value: Prevents bus lock-up during ESD events by maintaining stable supply during transient-induced ground shifts. |
| CAN Interface Isolation | 5G Remote Radio Unit (RRU) |
|
Use Scenario: Biasing isolated CAN FD transceivers in automotive diagnostic tools and EV battery management systems. IC Role / Device Role / Timing Role: Supplies isolated 3.3V to CAN PHY and controller side, enabling bidirectional data integrity. Use Value: Supports 5Mbps CAN FD timing margins by limiting supply-induced jitter to <1ns RMS. |
Use Scenario: Providing isolated auxiliary power to FPGA configuration memory and clock buffers in outdoor 5G RRUs. IC Role / Device Role / Timing Role: Generates 3.3V bias for low-noise clock distribution ICs and flash memory in RF front-end modules. Use Value: Maintains <100ps phase noise degradation on 100MHz reference clocks under thermal cycling from -40°C to +125°C. |
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-0503-R) | Unregulated output, 1.5kVDC isolation, 0.25W max, DIP-8 package | Lacks regulation and thermal/SCP protection; requires external feedback for stability | Select only when cost sensitivity outweighs regulation accuracy and safety certification needs. |
| Analog Devices ADuM6000 | 0.5W, 5kVrms isolation, integrated LDO, SOIC-16, but requires external transformer | Higher isolation rating but larger solution size and higher BOM complexity | Prefer when >3.75kVrms reinforcement is mandated or tighter output tolerance (<±1%) is required. |
Compared with RECOM R1SX-0503-R and ADuM6000, the MID04W0503AGY-3R-P delivers tighter regulation (0.3% vs unregulated or ±2%), built-in 3kVDC safety certification, and smallest PCB footprint-making it optimal for space-constrained, thermally demanding industrial and telecom designs where reliability trumps marginal efficiency gain.
Availability
MID04W0503AGY-3R-P is available at Aetrix Electronics and suitable for industrial automation systems, telecom network gateways, and isolated sensor power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MID04W0503AGY-3R-P 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, founded in 1997 and headquartered in Kirkland, Washington.
The MID series targets compact, certified isolated DC/DC conversion for industrial, telecom, and automotive applications-designed to replace discrete transformer-based solutions with single-chip reliability and safety compliance.
FAQ
What is the maximum continuous output current supported by the MID04W0503AGY-3R-P?
The device supports up to 120mA continuous output current at 3.3V, corresponding to its 0.4W maximum output power rating. This is verified across the full -40°C to +125°C operating temperature range with 10μF input/output capacitance and proper thermal layout per the datasheet's SOICW-16 PCB guidelines.
Does the MID04W0503AGY-3R-P require external feedback components?
No. The device integrates a complete feedback circuit-including error amplifier, reference, and isolation-coupled sensing-eliminating the need for optocouplers, TL431 shunt regulators, or external compensation networks. Output regulation is achieved entirely within the monolithic IC.
Can the MID04W0503AGY-3R-P be used with input voltages below 4.5V?
No. The under-voltage lockout (UVLO) rising threshold is 2.61V, but the device requires ≥4.5V to sustain regulation and deliver rated output power. Operation below 4.5V causes dropout, increased ripple, and potential hiccup-mode entry-even if VIN remains above UVLO.
How does the 3kVDC isolation rating impact PCB layout requirements?
The 3kVDC rating mandates ≥8mm minimum creepage and clearance between primary-side (pins 1–8) and secondary-side (pins 9–16) copper features. This requires physical separation of GND1/GND2 planes, no shared vias across isolation barrier, and adherence to IPC-2221B spacing rules for reinforced insulation.
Is the MID04W0503AGY-3R-P compatible with lead-free reflow soldering profiles?
Yes. It is qualified for JEDEC J-STD-020D-compliant lead-free reflow, with peak temperature up to 260°C and MSL Level 3 handling. The SOICW-16 package uses matte tin plating and passes 1000-cycle thermal shock testing per JESD22-A104.
What is the purpose of connecting SGND2 to PGND2 with a thin trace?
A thin trace limits high-frequency common-mode current flow between secondary-side grounds, reducing electromagnetic radiation across the isolation barrier. Thick copper would increase parasitic capacitance and degrade CISPR32 Class B emissions performance-verified in MPS's certified evaluation board layout.
Does the device support adjustable output voltage?
No. The MID04W0503AGY-3R-P is factory-trimmed for fixed 3.3V output with ±1.5% accuracy over temperature and line/load. There is no external resistor divider or feedback pin to modify the output voltage; alternative part numbers (e.g., MID04W0505A) are required for other voltages.
MID04W0503AGY-3R-P 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):
- 4.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output 1:
- 3.3V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 121mA
- Power (Watts):
- 400 mW
- Voltage - Isolation:
- 3 kV
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output
- Operating Temperature:
- -40°C ~ 125°C (With Derating)
- Efficiency:
- 38%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Control Features:
- -
- Approval Agency:
- CB
- Standard Number:
- 62368-1
MID04W0503AGY-3R-P FAQ
1.How can I place an order for MID04W0503AGY-3R-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MID04W0503AGY-3R-P 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 MID04W0503AGY-3R-P reliable?
The price and inventory of MID04W0503AGY-3R-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MID04W0503AGY-3R-P is usually 5 days.
3.What payment methods are accepted for MID04W0503AGY-3R-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MID04W0503AGY-3R-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MID04W0503AGY-3R-P?
MID04W0503AGY-3R-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MID04W0503AGY-3R-P 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 MID04W0503AGY-3R-P?
For technical support, including MID04W0503AGY-3R-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MID04W0503AGY-3R-P requirements.
6.How does Aetrix verify that MID04W0503AGY-3R-P is sourced from the original manufacturer or authorized distributors?
All MID04W0503AGY-3R-P 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 MID04W0503AGY-3R-P meets industry standards.
7.What is the process for return or replacement of MID04W0503AGY-3R-P?
All MID04W0503AGY-3R-P units undergo pre-shipment inspection (PSI). If there is an issue with MID04W0503AGY-3R-P, 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 MID04W0503AGY-3R-P part is unused and in its original packaging.
Return procedure for MID04W0503AGY-3R-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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