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bq29200 - Voltage Protection

Description

The bq2920x device is a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction.

Features

  • 1 2-Series Cell Secondary Protection.
  • Automatic Cell Imbalance Correction with External Enable Control.
  • ±30-mV Enable, 0-mV Disable Thresholds Typical.
  • External Capacitor-Controlled Delay Timer.
  • External Resistor-Controlled Cell Balance Current.
  • Low Power Consumption ICC < 3 µA Typical (VCELL(ALL) <.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq29200, bq29209 SLUSA52C – SEPTEMBER 2010 – REVISED MARCH 2016 bq2920x Voltage Protection with Automatic Cell Balance for 2-Series Cell Li-Ion Batteries 1 Features •1 2-Series Cell Secondary Protection • Automatic Cell Imbalance Correction with External Enable Control – ±30-mV Enable, 0-mV Disable Thresholds Typical • External Capacitor-Controlled Delay Timer • External Resistor-Controlled Cell Balance Current • Low Power Consumption ICC < 3 µA Typical (VCELL(ALL) < VPROTECT) • Internal Cell Balancing Handles Current up to 15 mA • External Cell Balancing Mode Supported • High-Accuracy Overvoltage Protection: – ±25 mV with TA = 0°C to 60°C • Fixed Overvoltage Protection Thresholds: 4.30 V, 4.
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