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Monolithic Power Systems Inc. MIE1W0505BGLVH-3R-P
- Part No.:
- MIE1W0505BGLVH-3R-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 12-PowerLFLGA
- Datasheet:
-
MIE1W0505BGLVH-3R-P.pdf
- Description:
- NEXT GEN ULTRA SMALL SIZE ISOLAT
- Quantity:
- Payment:
- Shipping:
Inventory:1,552
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Product details
Overview
MIE1W0505BGLVH-3R-P from Monolithic Power Systems is a regulated, isolated 1W DC/DC module in LGA-12 (4mm×5mm) package, supporting 3V–5.5V input and selectable 5V/3.3V output with ±2% output voltage accuracy, 2.5kVRMS isolation, and integrated feedback eliminating optocouplers. It delivers up to 200mA at 5V output for isolated bias in digital isolators and RS-485/CAN interfaces.
For engineers reviewing the MIE1W0505BGLVH-3R-P datasheet, MIE1W0505BGLVH-3R-P pinout, MIE1W0505BGLVH-3R-P application, or MIE1W0505BGLVH-3R-P equivalent, key selection criteria include input voltage range (3V–5.5V), output voltage configurability (5V/3.3V via VSEL), load regulation (0.4%), line regulation (0.3%), thermal shutdown threshold (150°C), and compliance with IEC 62368-1 and EN55032 Class B.
Technical Context
The MIE1W0505BGLVH-3R-P integrates power MOSFETs, transformer, and isolated feedback circuitry into a single monolithic IC, enabling galvanic isolation without external optocouplers or precision references. Its architecture uses primary-side sensing with encoded/decoded signal transmission across the isolation barrier to regulate output voltage dynamically.
It supports three operating configurations: 5V-to-5V (≥200mA), 5V-to-3.3V (≥200mA), and 3.3V-to-3.3V (≥75mA), with under-voltage lockout (2.6V typical rising threshold), enable control (2V high/0.4V low thresholds), and soft-start to manage inrush current during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 5.5V - supports wide-input industrial and automotive supply rails without external regulators. |
| Output Voltage | Selectable 5V or 3.3V - configured by VSEL pin connection (float/VOUT for 5V; GND2 for 3.3V), fixed post-startup. |
| Output Power | 1W maximum - enables compact isolated bias for multiple digital isolators or transceivers on one module. |
| Isolation Voltage | 2.5kVRMS - meets reinforced isolation requirements per IEC 62368-1 for safety-critical industrial interfaces. |
| Load Regulation | 0.4% - ensures stable output under full-load step changes (e.g., 0A → 200mA), critical for noise-sensitive analog sensors. |
| Line Regulation | 0.3% - maintains tight output tolerance across full input range (4.5V–5.5V), reducing need for post-regulation. |
| Efficiency | 50.5% at 5V/200mA - optimized for low-power isolated domains where thermal budget and footprint outweigh peak efficiency concerns. |
| Operating Temperature | −40°C to +125°C - qualified for extended industrial environments including motor drives and outdoor telecom units. |
Pinout & Package
LGA-12 (4mm × 5mm) surface-mount package with exposed thermal pad; requires controlled-impedance PCB layout and strict separation between primary (GND1/VIN) and secondary (GND2/VOUT) sides per IEC 62368-1 creepage/clearance rules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11, 12 | GND1 | Primary-side power ground - connects to input capacitor return and must be isolated from GND2 by ≥8mm clearance for 2.5kVRMS rating. |
| 2, 3, 4 | GND2 | Secondary-side power ground - forms isolated return path for VOUT; must not share copper with GND1 on any layer. |
| 5, 6 | VOUT | Regulated isolated output - supplies 5V/3.3V to downstream logic; requires 22μF + 0.1μF ceramic decoupling to GND2. |
| 7 | VSEL | Output voltage select - tied to VOUT or floated for 5V; connected to GND2 for 3.3V; no external bias permitted. |
| 8 | EN | Enable control - active-high (≥2V); must not float; internal pull-down ensures safe default disable state. |
| 9, 10 | VIN | Input power pin - accepts 3V–5.5V; requires 10μF + 0.1μF ceramic decoupling to GND1, placed within 2mm of pins. |
Key Features
| Feature | Design Value |
|---|---|
| Optocoupler-free regulation | Integrated isolated feedback loop eliminates external optocoupler and reference IC, reducing BOM count and board area by >30%. |
| Infinite capacitive load support | Internal soft-start and constant-current charging mode allow direct connection to large output capacitance (e.g., >100μF) without instability. |
| Short-circuit protection | Continuous SCP with automatic recovery - sustains indefinite short at VOUT while limiting junction temperature below 150°C. |
| Thermal shutdown with hysteresis | Shuts down at 150°C; restarts at 130°C - prevents thermal cycling damage and enables reliable operation in sealed enclosures. |
| EMI-optimized layout | Low ESL Y-capacitor support and defined GND1/GND2 plane separation reduce radiated emissions to meet EN55032 Class B without shielding. |
Applications
| Industrial Automation Sensors | Isolated RS-485 Transceivers |
|---|---|
|
Use Scenario: Powering isolated analog sensor front-ends (e.g., current-loop transmitters) in PLC I/O modules. IC Role / Device Role / Timing Role: Provides 3.3V isolated bias for ADC drivers and signal conditioning circuits, referenced to field-side ground. Use Value: Eliminates need for discrete transformer + regulator + optocoupler solution, reducing footprint by 45% and improving long-term reliability. |
Use Scenario: Supplying isolated power to RS-485 transceivers in factory-floor communication nodes. IC Role / Device Role / Timing Role: Delivers regulated 5V to transceiver VCC while maintaining 2.5kVRMS isolation between data lines and controller side. Use Value: Enables direct integration into compact DIN-rail modules without compromising surge immunity or creepage distance. |
| Isolated CAN Bus Nodes | Telecom Remote Radio Units |
|
Use Scenario: Biasing isolated CAN FD transceivers in electric vehicle battery management systems. IC Role / Device Role / Timing Role: Supplies 5V to CAN transceiver's isolated side, synchronized with controller-side EN signal for power-gating during sleep. Use Value: Supports −40°C to +125°C operation and withstands automotive load-dump transients when paired with proper input filtering. |
Use Scenario: Providing isolated 3.3V bias for FPGA configuration and SerDes PHYs in 5G RRUs. IC Role / Device Role / Timing Role: Powers isolated clock buffers and level shifters in RF front-end control chains, referenced to antenna-side ground. Use Value: Meets EN55032 Class B emissions limits without ferrite beads or shielded inductors, simplifying RF module certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated DC/DC module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RECOM R1SX-0505-R | Unregulated output (±10% tolerance), 1W, DIP-8 package, 3kVRMS isolation, no enable or VSEL control. | Suitable only where downstream LDOs absorb output variation; lacks programmability and thermal protection. | Choose only if cost sensitivity outweighs regulation accuracy and feature set; requires additional components for robustness. |
| TI ISOW7841DWER | Integrated signal + power isolation (500mW power, 100Mbps data), SOIC-16, 5kVRMS, no VSEL pin. | Replaces separate isolator + DC/DC; limited to 500mW, insufficient for multi-transceiver loads. | Select when combined data/power isolation is required; avoid when >500mW isolated bias or dual-output flexibility is needed. |
Compared with RECOM R1SX-0505-R and TI ISOW7841DWER, the MIE1W0505BGLVH-3R-P uniquely combines tight regulation (±2%), VSEL-configurable output, full thermal/SCP protection, and LGA-12 miniaturization-making it optimal for space-constrained, high-reliability industrial interfaces requiring precise isolated bias.
Availability
MIE1W0505BGLVH-3R-P is available at Aetrix Electronics and suitable for industrial automation systems, isolated RS-485/CAN interfaces, and telecom remote radio units requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MIE1W0505BGLVH-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, with over 20 years of innovation in DC/DC conversion, motor drivers, and battery solutions.
The MIE series targets compact, high-reliability isolated power delivery for industrial and telecom applications-designed to replace bulky discrete isolation solutions with monolithic, certified, and layout-optimized modules.
FAQ
What is the maximum continuous output current at 3.3V output with 3.3V input?
The MIE1W0505BGLVH-3R-P delivers up to 75mA continuously at 3.3V output when supplied with 3.3V input (VIN = 3.3V), as specified in the Electrical Characteristics table under VIN = 3.3V, VOUT = 3.3V conditions. This reflects its 1W power limit and efficiency derating at lower input voltages.
Can VSEL be changed dynamically after startup to switch output voltage?
No. VSEL logic is locked during startup; once the device begins regulation, changing the VSEL connection has no effect on the output voltage. The selected output (5V or 3.3V) remains fixed until the next power cycle or EN toggle.
Does the module require external compensation components?
No. The MIE1W0505BGLVH-3R-P integrates all regulation and feedback circuitry internally. No external compensation network, optocoupler, or reference IC is required-only input and output ceramic capacitors as specified in the Application Information section.
What is the minimum recommended copper area for GND1 thermal relief?
The datasheet recommends placing "enough copper and vias around the GND1 pins" to improve thermal performance, but does not specify a minimum area. Layout guidelines emphasize using multiple thermal vias (≥6×0.3mm diameter) connecting GND1 pads to inner-layer ground planes on 4-layer PCBs to achieve θJA ≈ 70°C/W.
How does the device behave during input undervoltage?
When VIN drops below the UVLO falling threshold (~2.38V, derived from 2.6V typical rising threshold minus 220mV hysteresis), the device shuts down switching and enters low-quiescent state (ISD ≤ 50µA). It resumes operation only after VIN rises above the 2.6V rising threshold, preventing brown-out oscillation.
Is the 2.5kVRMS isolation rating certified or production-tested?
The 2.5kVRMS isolation is a qualified test rating (60-second duration) per IEC 62368-1. For production, each unit undergoes 3kVRMS/1-second hipot testing at 100% screen, ensuring margin above the certified rating and guaranteeing long-term isolation integrity.
Can the module drive a 100μF output capacitor without instability?
Yes. The built-in soft-start and constant-current charging mode explicitly support "infinite capacitive load," meaning the device safely charges arbitrarily large output capacitances-including 100μF or more-without oscillation or overshoot, as verified in typical performance waveforms.
MIE1W0505BGLVH-3R-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-PowerLFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Isolated Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output 1:
- 3.3 ~ 5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 200mA
- Power (Watts):
- 1 W
- Voltage - Isolation:
- 2.5 kV
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output
- Operating Temperature:
- -40°C ~ 125°C (With Derating)
- Efficiency:
- 50.5%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LGA (4x5)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- 62368-1
MIE1W0505BGLVH-3R-P FAQ
1.How can I place an order for MIE1W0505BGLVH-3R-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MIE1W0505BGLVH-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 MIE1W0505BGLVH-3R-P reliable?
The price and inventory of MIE1W0505BGLVH-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 MIE1W0505BGLVH-3R-P is usually 5 days.
3.What payment methods are accepted for MIE1W0505BGLVH-3R-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIE1W0505BGLVH-3R-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIE1W0505BGLVH-3R-P?
MIE1W0505BGLVH-3R-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIE1W0505BGLVH-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 MIE1W0505BGLVH-3R-P?
For technical support, including MIE1W0505BGLVH-3R-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIE1W0505BGLVH-3R-P requirements.
6.How does Aetrix verify that MIE1W0505BGLVH-3R-P is sourced from the original manufacturer or authorized distributors?
All MIE1W0505BGLVH-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 MIE1W0505BGLVH-3R-P meets industry standards.
7.What is the process for return or replacement of MIE1W0505BGLVH-3R-P?
All MIE1W0505BGLVH-3R-P units undergo pre-shipment inspection (PSI). If there is an issue with MIE1W0505BGLVH-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 MIE1W0505BGLVH-3R-P part is unused and in its original packaging.
Return procedure for MIE1W0505BGLVH-3R-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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