My Inquiry
My Account
Monolithic Power Systems Inc. MID04W0503AGY-2R-Z
- Part No.:
- MID04W0503AGY-2R-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MID04W0503AGY-2R-Z.pdf
- Description:
- 0.4W, 1.5KVDC, REGULATED, ISOLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,245
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MID04W0503AGY-2R-Z 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 1.5kVDC isolation, SOICW-16 package, and integrated MOSFET/transformer/FB circuit. It operates across –40°C to +125°C and supports industrial bias power for digital isolators and RS-485/CAN interfaces.
For engineers reviewing the MID04W0503AGY-2R-Z datasheet, MID04W0503AGY-2R-Z pinout, MID04W0503AGY-2R-Z application, or MID04W0503AGY-2R-Z equivalent, key selection criteria include isolation voltage rating (1.5kVDC), load regulation (0.3%), line regulation (0.1%), thermal shutdown threshold (160°C), and CISPR32 Class B compliance.
Technical Context
The MID04W0503AGY-2R-Z implements an integrated flyback architecture with primary-side regulation via internal feedback circuitry-eliminating optocouplers or secondary-side sensing components. Its transformer and power MOSFET are monolithically embedded, enabling full isolation without external magnetics.
It employs hiccup-mode short-circuit protection with ~150ms off-time and internal soft-start (~15ms ramp), while thermal shutdown activates at 160°C with 20°C hysteresis. Input under-voltage lockout triggers at 2.61V rising threshold with 190mV hysteresis, ensuring stable startup across input transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 5.5V - compatible with standard 5V rail systems; UVLO ensures no operation below 2.61V. |
| Output Voltage | 3.3V ±0.05V - tight regulation enables direct powering of logic-level interfaces (e.g., RS-485 transceivers). |
| Isolation Voltage | 1.5kVDC - certified per UL1577 and IEC62368-1; meets reinforced insulation requirements for industrial safety standards. |
| Output Power | 0.4W max - supports up to 120mA at 3.3V, sufficient for biasing multiple digital isolators or sensor signal chains. |
| Load Regulation | 0.3% - maintains output stability across full 0–120mA load range, critical for precision analog front-ends. |
| Line Regulation | 0.1% - minimizes output drift over input variation, enabling robust operation in noisy or unregulated 5V domains. |
| Efficiency | 38% at full load - optimized for low-power isolated biasing where thermal footprint and size outweigh peak efficiency concerns. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom RRU environments. |
Pinout & Package
Package: SOICW-16 (wide-body, low-profile surface-mount package with 1.27mm pitch; JEDEC MS-013 AA compliant; MSL Level 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | PGND1 | Primary-side power ground - requires large copper area and multiple vias for thermal dissipation and noise control. |
| 3, 4 | VIN | Input power supply (4.5–5.5V) - decoupled with 10μF + 0.1μF capacitors placed adjacent to pins. |
| 5–8 | SGND1 | Primary-side signal ground - tied to PGND1 with wide traces to reduce thermal resistance and improve EMI immunity. |
| 9–12 | SGND2 | Secondary-side signal ground - connected to PGND2 via thin trace only to suppress common-mode EMI radiation. |
| 13, 14 | VOUT | Regulated 3.3V output - decoupled with 10μF + 0.1μF capacitors; ripple limited to ≤100mVpp under full load. |
| 15, 16 | PGND2 | Secondary-side power ground - kept isolated from SGND2 with minimal copper to avoid EMI coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Isolation | Monolithic transformer + MOSFET + FB circuit eliminates external magnetics and optocouplers, reducing BOM count and layout complexity. |
| Hiccup-Mode SCP | Auto-recovering short-circuit protection with 150ms off-time prevents thermal runaway during sustained faults without requiring system reset. |
| CISPR32 Class B Compliance | Validated radiated emissions <60dBµV/m at 3m (30MHz–1GHz), enabling direct use in EMC-sensitive industrial gateways and CPE devices. |
| Thermal Protection | Non-latching shutdown at 160°C with 20°C hysteresis ensures safe operation in sealed enclosures or high-ambient environments. |
| Low-Profile Packaging | SOICW-16 footprint (10.3×10.3mm) enables dense PCB layouts in space-constrained modules like 5G RRUs and PLC I/O cards. |
Applications
| Industrial Sensor Signal Conditioning | Isolated RS-485 Transceiver Bias |
|---|---|
|
Use Scenario: Providing clean, isolated 3.3V bias to analog front-end ICs and ADC drivers in harsh factory-floor sensor nodes. IC Role / Device Role / Timing Role: Isolated DC/DC converter supplying regulated secondary-side power for signal chain components, breaking ground loops between field sensors and controller. Use Value: Enables ±0.3% load regulation and <100mVpp ripple to preserve 16-bit ADC accuracy despite varying sensor current draw (0–120mA). |
Use Scenario: Powering RS-485 transceivers in multi-node industrial networks where galvanic isolation prevents bus contention and ground potential differences. IC Role / Device Role / Timing Role: Primary-side powered, secondary-side regulated 3.3V source for transceiver VCC, decoupled from host MCU domain. Use Value: 1.5kVDC isolation and CISPR32 Class B compliance ensure reliable communication in electrically noisy motor drive cabinets and PLC backplanes. |
| Digital Isolator Auxiliary Supply | 5G Remote Radio Unit (RRU) Control Logic Bias |
|
Use Scenario: Delivering isolated 3.3V to high-speed digital isolators (e.g., ISO7741) used for SPI/I²C level-shifting between MCU and high-voltage power stages. IC Role / Device Role / Timing Role: Compact, self-contained isolated power source replacing discrete transformer + regulator solutions for data channel isolation. Use Value: SOICW-16 footprint and integrated design reduce board area by >40% versus discrete alternatives while maintaining <0.1% line regulation for timing-critical interfaces. |
Use Scenario: Supplying isolated 3.3V bias to FPGA configuration memory, clock buffers, and monitoring ICs inside compact 5G RRUs exposed to elevated ambient temperatures. IC Role / Device Role / Timing Role: High-reliability isolated converter operating continuously at +105°C ambient, supporting thermal management and fault reporting subsystems. Use Value: –40°C to +125°C junction rating and 160°C thermal shutdown allow uninterrupted operation in outdoor base station enclosures without derating. |
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 (±10% tolerance), 1W output, DIP-8 package, no integrated feedback loop. | Suitable for non-critical biasing where load regulation >5% is acceptable; lacks hiccup-mode SCP and thermal shutdown. | Select when cost sensitivity outweighs regulation precision and protection features; requires external LDO for 3.3V logic rails. |
| Analog Devices ADuM6000 | 0.5W output, 5kVrms isolation, integrated LDO post-regulator, SOIC-16 package, higher efficiency (up to 45%). | Targeted at high-isolation medical/industrial systems requiring tighter safety margins; larger footprint due to internal LDO. | Prefer when 5kVrms isolation and sub-1% output accuracy are mandatory; accept higher unit cost and reduced temperature range (–40°C to +105°C). |
Compared with RECOM R1SX-0503-R and ADuM6000, the MID04W0503AGY-2R-Z uniquely balances 1.5kVDC isolation, 0.3% load regulation, hiccup-mode SCP, and SOICW-16 compactness for cost-sensitive industrial automation designs needing guaranteed 3.3V stability without secondary regulation.
Availability
MID04W0503AGY-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 MID04W0503AGY-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, including DC/DC converters, LED drivers, and motor controllers, with global manufacturing and quality certifications.
This device belongs to MPS's MID series of fully integrated isolated DC/DC converters-designed specifically for space-constrained, high-reliability industrial and telecom applications requiring certified isolation and minimal external components.
FAQ
What is the maximum continuous output current supported by the MID04W0503AGY-2R-Z?
The device delivers up to 120mA continuously at 3.3V (0.4W), verified across –40°C to +125°C ambient. Output current is limited by thermal design and internal current-sense thresholds; exceeding 120mA triggers hiccup-mode SCP. Derating is not required within its specified temperature range.
Does the MID04W0503AGY-2R-Z require external transformers or optocouplers?
No. It integrates the power MOSFET, transformer, and feedback circuit in a single SOICW-16 package. No external magnetics, optocouplers, or compensation components are needed-only two 10μF input/output capacitors and two 0.1μF ceramic bypass capacitors are required for basic operation.
How does the hiccup-mode short-circuit protection behave during sustained overload?
When VOUT fails to reach 2.61V after the 15ms soft-start period, the device enters hiccup mode: it disables switching for ~150ms, then attempts restart. This cycle repeats until fault clearance. Unlike latch-off protection, it enables automatic recovery without manual reset or power cycling.
Can the MID04W0503AGY-2R-Z be used with input voltages outside 4.5–5.5V?
No. The absolute maximum VIN is +6V, but operation below 4.5V or above 5.5V violates recommended conditions. Below 4.5V, UVLO prevents startup; above 5.5V, internal stress increases risk of premature failure. External regulators must condition input if upstream supply exceeds this window.
What PCB layout practices are essential to meet CISPR32 Class B emissions?
Key practices include: (1) using overlapping mid-layer copper planes (PGND1 and GND2) to form a low-ESL Y-capacitor; (2) placing ferrite beads (BLM18HE102) and ≥4.7μF output capacitor close to VOUT/PGND2; (3) connecting SGND2 to PGND2 with a thin trace only; and (4) separating primary/secondary sides with ≥8mm creepage/clearance.
Is the MID04W0503AGY-2R-Z certified for safety standards beyond UL1577?
Yes. It holds CB certification per IEC62368-1 3rd Edition and meets reinforced insulation requirements for industrial equipment. The 1.5kVDC isolation rating is validated per UL1577 (input-to-output dielectric withstand) and qualifies for functional isolation in SELV circuits per IEC61000-4-5 surge immunity testing.
What is the minimum recommended output capacitance for stable regulation?
A minimum of 10μF (tantalum or aluminum electrolytic) plus 0.1μF (ceramic) is required across VOUT and PGND2. Capacitive load capability extends to 330μF with 45Ω series resistance, enabling compatibility with downstream LDOs or high-inrush loads without instability.
MID04W0503AGY-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):
- 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:
- 1.5 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-2R-Z FAQ
1.How can I place an order for MID04W0503AGY-2R-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MID04W0503AGY-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 MID04W0503AGY-2R-Z reliable?
The price and inventory of MID04W0503AGY-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 MID04W0503AGY-2R-Z is usually 5 days.
3.What payment methods are accepted for MID04W0503AGY-2R-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MID04W0503AGY-2R-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MID04W0503AGY-2R-Z?
MID04W0503AGY-2R-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MID04W0503AGY-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 MID04W0503AGY-2R-Z?
For technical support, including MID04W0503AGY-2R-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MID04W0503AGY-2R-Z requirements.
6.How does Aetrix verify that MID04W0503AGY-2R-Z is sourced from the original manufacturer or authorized distributors?
All MID04W0503AGY-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 MID04W0503AGY-2R-Z meets industry standards.
7.What is the process for return or replacement of MID04W0503AGY-2R-Z?
All MID04W0503AGY-2R-Z units undergo pre-shipment inspection (PSI). If there is an issue with MID04W0503AGY-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 MID04W0503AGY-2R-Z part is unused and in its original packaging.
Return procedure for MID04W0503AGY-2R-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MID04W0503AGY-2R-Z Tags
-
1S4E_0505S1.5U
GAPTEC Electronic
-
TPS631000DRLR
Texas Instruments
-
XCL209F083DR
Torex Semiconductor Ltd
-
SC202AMLTRT
Semtech Corporation
-
NME1S0505SC
Murata Power Solutions Inc.
-
XCL101A501ER-G
Torex Semiconductor Ltd
-
RFM-0505S
Recom Power
-
TEA 1-0505E
Traco Power
-
MIC33153YHJ-TR
Microchip Technology
-
TEA 1-0505
Traco Power
-
TPSM863252RDXR
Texas Instruments
-
RFB-0505S
Recom Power
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
