UBA2007

General description

The UBA2007 is an intelligent charge switch IC for pulse mode charging applications. With its integrated low ohmic power switch it is designed for charging of 1-cell Li-Ion or 3-cell NiMH batteries in either a pre-charge or fast charge mode. The reverse mode of the UBA2007 allows the supply of accessories connected to the charger pin. Several integrated safety mechanisms such as current limitation, overvoltage protection, thermal protection and ESD guarantee fail-safe operation.

Features

• Very low ohmic charge switch (0.25 Ohm) with soft switching and adjustable current limitation
• Very low ohmic reverse switch (0.25 Ohm) with built-in current limitation
• 130 mA pre-charge current
• Battery overvoltage and undervoltage protection
• Charger overvoltage protection of up to +20 V and reverse polarity protection down to -20 V
• On-chip thermal protection
• Charger detection
• Built-in current sensing
• Small 3 x 3 mm HVSON10 package with excellent thermal properties
• The UBA2007 is qualified according to the IEC 61000-4-2 standard for ESD performance.

Applications

• Charging circuits.

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