Intel EN5337QI DC-DC Converter: Features, Specs & Applications
Intel EN5337QI DC-DC Converter: In-Depth Technical Analysis
The Intel EN5337QI remains a benchmark in non-isolated Point-of-Load (PoL) DC-DC conversion, offering engineers a reliable power solution despite its obsolete status. This comprehensive guide explores its technical specifications, design advantages, and modern applications to help you leverage its capabilities for your projects.
Product Overview and Key Features
Manufacturer Details
- Manufacturer: Intel Corporation (Nasdaq: INTC)
- Part Number: EN5337QI (Alternate: EN5337QI X6M)
- Product Line: Intel Power Delivery Solutions
Technical Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.375V - 5.5V |
| Output Voltage Range | 0.6V - 5V (Adjustable) |
| Maximum Output Current | 3A Continuous |
| Peak Efficiency | 92% @ 3.3V Input |
| Switching Frequency | 1.5MHz Typical |
| Power Rating | 15W |
Advanced Design Features
Package Characteristics
- Package Type: 38-pin FQFN (7.0mm 4.0mm 1.9mm)
- Thermal Resistance: 15 C/W (Junction-to-Ambient)
- Weight: 0.15g Typical
Protection Mechanisms
- Over-Current Protection (OCP): Hiccup-mode with auto-recovery
- Thermal Shutdown: Activates at 125 C (Typical)
- Input UVLO: 2.2V Threshold (Hysteresis Included)
- Output Short-Circuit Protection: Fold-back current limiting
Performance Characteristics
Efficiency Curves
The EN5337QI demonstrates exceptional efficiency across its operating range:
- 92% @ 3.3V Input, 1.8V Output (3A Load)
- 90% @ 5V Input, 3.3V Output (2A Load)
- 88% @ 2.5V Input, 1.2V Output (2.5A Load)
Thermal Performance
With proper PCB layout (2oz copper, 4-layer board):
- Maximum junction temperature: 125 C
- Derating begins at 85 C ambient
- Recommended operating range: -40 C to +85 C
Design Implementation Guide
Recommended External Components
- Input Capacitors: 2 10 F X7R (0805 size recommended)
- Output Capacitors: 3 22 F X5R (1206 size minimum)
- Feedback Resistors: 1% tolerance required
Layout Considerations
- Place input capacitors within 3mm of Vin pins
- Use at least 4 thermal vias under exposed pad
- Keep feedback traces short and away from switching nodes
Modern Applications
Primary Use Cases
- Server Power Systems: Memory bus voltage regulation
- Networking Equipment: ASIC and FPGA power delivery
- Industrial Automation: Sensor interface power
- Test & Measurement: Precision instrument supplies
Replacement Considerations
While obsolete, these alternatives may be considered:
- Texas Instruments TPS62827 (3A, 1.8mm 1.4mm)
- Analog Devices LTM4620 (4A, Module)
- Maxim Integrated MAX17503 (3A, 3mm 3mm)
Purchasing Information
Despite its obsolete status, the EN5337QI remains available through these channels:
- Authorized Intel distributors with remaining stock
- Specialized obsolete component suppliers
- Verified aftermarket sources
Conclusion
The Intel EN5337QI continues to offer exceptional value for engineers requiring reliable, high-density power conversion. Its combination of efficiency, protection features, and compact size makes it particularly suitable for space-constrained, high-reliability applications. While newer alternatives exist, the EN5337QI's proven performance and available inventory make it worth considering for both new designs and legacy system maintenance.