TPS62827 – 2.4V-5.5V input, 4A step-down converter with 1% Accuracy

The TPS6282x is an ease-to-use synchronous step-down DC-DC converters family with a very low quiescent current of only 4 µA. Based on the DCS-Control topology, it provides a fast transient response. The internal reference allows to regulate the output voltage down to 0.6 V with a high feedback voltage accuracy of 1% over the junction temperature range of –40°C to 125°C. The family devices are pin-to-pin and BOM-to-BOM compatible. The entire solution requires a small 470-nH inductor, a single 4.7-µF input capacitor and two 10-µF or single 22-µF output capacitor.

Features

• DCS-control topology
• 1% feedback or output voltage accuracy (full temperature range)
• Up to 97% efficiency
• 26-mΩ and 25-mΩ internal power MOSFETs
• 2.4-V to 5.5-V input voltage range
• 4-µA operating quiescent current
• 2.2-MHz switching frequency
• Adjustable output voltage from 0.6 V to 4V
• Power save mode for light load efficiency
• 100% duty cycle for lowest dropout
• Active output discharge
• Power good output
• Thermal shutdown protection
• Hiccup short-circuit protection
• Create a custom design using the TPS6282x with the WEBENCH^® Power Designer

The TPS6282x includes an automatically entered power save mode to maintain high efficiency down to very light loads for extending the system battery run-time. The device features a Power Good signal and an internal soft start circuit. It is able to operate in 100% mode. For fault protection, it incorporates a HICCUP short circuit protection as well as a thermal shutdown. The device is available in a 6-pin 1.5 x 1.5-mm QFN package, offering the highest power density solution.

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