Overview
The Intel EN5311QI is a highly integrated DC-DC switching buck step-down regulator module designed by Intel, formerly part of Enpirion Power Solutions. This module is engineered to provide a complete power conversion solution with high efficiency and minimal layout constraints. It features an ultra-low-profile QFN-20 package, making it ideal for space and height-constrained applications. The EN5311QI is RoHS compliant and offers a wide input voltage range, adjustable output voltage, and integrated components such as an inductor, MOSFETs, and PWM controller.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Intel |
| Package | 20-Pin QFN-20-EP (4x5mm) |
| Input Voltage Range | 2.4V to 6.6V |
| Output Voltage Range | 0.6V to 4.9V |
| Output Current | 1A |
| Switching Frequency | 4 MHz |
| Efficiency | Up to 95% |
| Operating Temperature Range | -40°C to 85°C |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | MSL 3 |
| RoHS Compliance | Yes |
Key Features
- Integrated Inductor: The EN5311QI features an integrated inductor, which simplifies the design and minimizes layout constraints.
- High Efficiency: Achieves efficiency of up to 95%, reducing heat and improving overall system reliability.
- Low Profile: Ultra-low-profile QFN-20 package (5mm x 4mm x 1.1mm) ideal for space and height-constrained applications.
- Adjustable Output Voltage: Output voltage can be adjusted from 0.6V to 4.9V using a 3-pin VID output voltage selector or an external resistor divider.
- Low Noise and EMI: Designed for low noise and low EMI applications, with very low ripple voltage (5mVp-p typical).
- Protection Features: Includes short circuit, overcurrent, UVLO (Under Voltage Lock Out), and thermal protection.
- RoHS Compliance: Compliant with the Restriction of Hazardous Substances (RoHS) directive.
Applications
- Area Constrained Applications: Ideal for applications where board area and profile are critical, such as in smart phones, PDAs, and personal media players.
- Noise Sensitive Applications: Suitable for noise-sensitive applications like A/V and RF systems, set-top boxes, home gateways, VoIP and video phones.
- LDO Replacement: Can replace traditional LDOs for improved thermal performance in various electronic devices.
Q & A
- What is the input voltage range of the EN5311QI?
The input voltage range of the EN5311QI is from 2.4V to 6.6V.
- What is the output voltage range of the EN5311QI?
The output voltage range of the EN5311QI is from 0.6V to 4.9V.
- What is the maximum output current of the EN5311QI?
The maximum output current of the EN5311QI is 1A.
- What is the switching frequency of the EN5311QI?
The switching frequency of the EN5311QI is 4 MHz.
- Is the EN5311QI RoHS compliant?
Yes, the EN5311QI is RoHS compliant.
- What type of package does the EN5311QI use?
The EN5311QI uses a 20-pin QFN-20-EP package.
- What are the key protection features of the EN5311QI?
The EN5311QI includes short circuit, overcurrent, UVLO, and thermal protection features.
- What are some typical applications for the EN5311QI?
Typical applications include area-constrained devices like smart phones, PDAs, and noise-sensitive applications such as A/V and RF systems.
- What is the operating temperature range of the EN5311QI?
The operating temperature range of the EN5311QI is from -40°C to 85°C.
- Does the EN5311QI have integrated components?
Yes, the EN5311QI has an integrated inductor, MOSFETs, PWM controller, and compensation components.
