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NCP802 - Highly Integrated Lithium Battery Protection

General Description

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Key Features

  • Highly Accurate Overvoltage Detector "25 mV at Room Temperature "30 mV from.
  • 5 to 55°C.
  • Fault Detection Thresholds Overvoltage Threshold: SN1/SAN1 = 4.35 V, SAN5 = 4.275 V, SAN6 = 4.28 V Undervoltage Threshold: SN1/SAN1 = 2.4 V, SAN5/6 = 2.3 V Discharge Current Threshold: SN1/SAN1/SAN6 = 0.2 V, SAN5 = 0.1 V Charge Current Threshold: 0.1 V.
  • Internal Output Delays Overvoltage Output Delay: SN1/SAN1/SAN6 = 250 ms, SAN5 = 1 ms Undervoltage Output Delay: 20 ms Disc.

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Datasheet Details

Part number NCP802
Manufacturer ON
File Size 442.23 KB
Description Highly Integrated Lithium Battery Protection
Datasheet download datasheet NCP802 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP802 Highly Integrated Lithium Battery Protection Circuit for One Cell Battery Packs The NCP802 resides in a lithium battery pack where the battery cell continuously powers it. This circuit senses cell voltage, charge current, and discharge current, and correspondingly controls the state of two, N−channel MOSFET switches. These switches reside in series with the negative terminal of the cell and the negative terminal of the battery pack. During a fault condition, the NCP802 open circuits the pack by turning off one of these MOSFET switches, which disconnects the current path. Internal delay circuitry minimizes external component count.