Description
Key Description:
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NB679 is a fully integrated, synchronous buck converter with a fixed 5 V output, capable of delivering 8 A continuous and 10 A peak current.
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It includes a built-in 5 V LDO (≈ 100 mA) which can be used to power auxiliary circuits.
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Operates over a wide input voltage range: approximately 5.5 V to 28 V.
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Uses Adaptive Constant‑On‑Time (COT) control for fast transient response and simpler loop compensation.
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Employs a DC Auto‑Tune loop to improve load and line regulation.
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Switching frequency: ~700 kHz typical.
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Low quiescent current in standby (~100 µA) when idle.
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Protection features:
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Over‑current limit (OCP)
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Over-voltage protection (OVP)
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Under-voltage protection (UVP)
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Thermal shutdown
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Has an ultrasonic mode (i.e. switching above audible frequencies) for noise avoidance at light loads.
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Soft-start, output discharge, and latch-off reset (via EN or power cycle) are provided.
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Available in a compact QFN‑12 (2 mm × 3 mm) package.
No Return / No Exchange Policy / No Warranty.
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