Overview
Description
The EL7566 is a high-efficiency full-featured synchronous 6A step-down regulator. This document lists the completed schematic diagram and BOM, as well as the layout. With components on one side of the PCB, the complete converter occupies less than 0.72in2 of space. Please refer to the datasheet for the application of features. This demo board is preset to 1.8V for VO and operates at a 500kHz switching frequency. The measured crossover frequencies are around 50kHz with the compensation values.
Features
- Integrated MOSFETs
- 6A continuous output current
- Up to 96% efficiency
- Multiple supply start-up tracking
- Built-in ±5% voltage margining
- 3V to 6V input voltage
- Adjustable switching frequency to 1MHz
- Oscillator synchronization possible
- 100% duty ratio
- Junction temperature indicator
- Over-temperature protection
- Internal soft-start
- Variable output voltage down to 0.8V
- Power-good indicator
- Pb-free plus anneal available (RoHS compliant)
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Manual - Development Tools | PDF 388 KB | |
| PCB Design Files | ZIP 223 KB | |
| Application Note |
PDF
453 KB
AI-generated Summary:
The document details thermal design considerations for the EL75XX series, focusing on the 28 PSOP 2 package. It explains two versions of the package—slug down and slug up—with different mounting and heat dissipation options. Various heatsink configurations, bonding materials, and forced air convection methods improve thermal performance, enabling power dissipation from 2W up to 9W. Thermal resistance values and the effects of airflow on heat dissipation are analyzed with graphical data.
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| Application Note |
PDF
817 KB
AI-generated Summary:
The document details the design of a high-efficiency DC-DC converter using the EL75XX series. It explains the pin functions, including charge pump capacitors, voltage doubler input, ground connections, and control signals. The basic buck regulator topology is described, showing how the output voltage depends on input voltage and duty cycle. It also covers synchronized rectification, replacing diodes with low-resistance FETs to improve efficiency and reduce power loss, with the addition of a Schottky diode to enhance reliability during transient states.
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| Datasheet | PDF 835 KB | |
5 items
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Product Options
| Part Number | Status | Stock | Sampleable | Pb (Lead) Free |
|---|---|---|---|---|
| EL7566DRE-EVAL | Obsolete | Out of Stock | N/A | No |
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