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bq29440 - VOLTAGE PROTECTION

General Description

The bq2944x is a secondary overvoltage protection IC for 2-series, 3-series, or 4-series cell Li-Ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit.

The voltage of each cell in a battery pack is compared to an internal reference voltage.

Key Features

  • 1.
  • 2-Series, 3-Series, or 4-Series Cell Secondary Protection.
  • External Capacitor-Controlled Delay Timer.
  • Low Power Consumption ICC < 2 µA Typical [VCELL(ALL) <.

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Other Datasheets by Texas Instruments

Part Number Description
bq29441 VOLTAGE PROTECTION
bq29442 VOLTAGE PROTECTION
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bq29449 VOLTAGE PROTECTION
bq2944L0 VOLTAGE PROTECTION

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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bq29440, bq2944L0 bq29441, bq29442, bq29443, bq29449, bq2944L9 www.ti.com SLUSA15C – JUNE 2010 – REVISED NOVEMBER 2010 Voltage Protection for 2-Series, 3-Series, or 4-Series Cell Li-Ion Batteries (Second-Level Protection) Check for Samples: bq29440, bq2944L0, bq29441, bq29442, bq29443, bq29449, bq2944L9 FEATURES 1 • 2-Series, 3-Series, or 4-Series Cell Secondary Protection • External Capacitor-Controlled Delay Timer • Low Power Consumption ICC < 2 µA Typical [VCELL(ALL) < VPROTECT] • High-Accuracy Overvoltage Protection: ±25 mV with TA = 0°C to 60°C • Fixed Overvoltage Protection Thresholds: 4.30 V, 4.35 V, 4.40 V, 4.45 V, 4.