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バッテリ管理 IC
バッテリ チャージャ IC

BQ2031

アクティブ

ユーザー選択可能な充電アルゴリズム採用スイッチ・モード鉛バッテリ・チャージャ

ご注文はこちら
データシート

この製品には新バージョンがあります。

open-in-new 代替品と比較
比較対象デバイスと同等の機能で、ピン配置が異なる製品
BQ25751 アクティブ パワー パス搭載、スタンドアロンまたは I²C 制御、70V 昇降圧鉛酸バッテリ充電コントローラ BQ25751 is a higher cell count and higher charge current option.

BQ2031

アクティブ
データシート ご注文はこちら

製品詳細

Rating Catalog Number of series cells 6 Cell chemistry Lead Acid Charge current (max) (A) 2 Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.5 Vin (max) (V) 5.5 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Control interface Standalone (RC-Settable) Operating temperature range (°C) -20 to 70
Rating Catalog Number of series cells 6 Cell chemistry Lead Acid Charge current (max) (A) 2 Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.5 Vin (max) (V) 5.5 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Control interface Standalone (RC-Settable) Operating temperature range (°C) -20 to 70
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6
  • Conforms to battery manufacturers' charge recommendations for cyclic and float charge
  • Pin-selectable charge algorithms

    • - Two-Step Voltage with temperature-compensated constant-voltage maintenance
    - Two-Step Current with constant-rate pulsed current maintenance
    - Pulsed Current: hysteretic, on-demand pulsed current
  • Pin-selectable charge termination by maximum voltage, 2V, minimum current, and maximum time
  • Pre-charge qualification detects shorted, opened, or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Internal temperature-compensated voltage reference
  • Pulse-width modulation control

    • - Ideal for high-efficiency switch-mode power conversion
    - Configurable for linear or gated current use
  • Direct LED control outputs display charge status and fault conditions
  • Conforms to battery manufacturers' charge recommendations for cyclic and float charge
  • Pin-selectable charge algorithms

    • - Two-Step Voltage with temperature-compensated constant-voltage maintenance
    - Two-Step Current with constant-rate pulsed current maintenance
    - Pulsed Current: hysteretic, on-demand pulsed current
  • Pin-selectable charge termination by maximum voltage, 2V, minimum current, and maximum time
  • Pre-charge qualification detects shorted, opened, or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Internal temperature-compensated voltage reference
  • Pulse-width modulation control

    • - Ideal for high-efficiency switch-mode power conversion
    - Configurable for linear or gated current use
  • Direct LED control outputs display charge status and fault conditions

The bq2031 Lead-Acid Fast Charge IC is designed to optimize charging of lead-acid chemistry batteries. A flexible pulse-width modulation regulator allows the bq2031 to control constant-voltage, constant-current, or pulsed-current charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum for high charge current applications.

A charge cycle begins when power is applied or the battery is replaced. For safety, charging is inhibited until the battery voltage is within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2031 provides trickle-currentcharging until the voltage rises into the allowed range or an internal timer runs out and places the bq2031 in a Fault condition. This procedure prevents high-current charging of cells that are possibly damaged or reversed. Charging is inhibited anytime the temperature of the battery is outside the configurable, allowed range. All voltage thresholds are temperature-compensated.

The bq2031 terminates fast (bulk) charging based on the following:

  • Maximum voltage
  • Second difference of cell voltage (2V)
  • Minimum current (in constant-voltage charging)
  • Maximum time-out (MTO)
    • After bulk charging, the bq2031 provides temperature-compensated maintenance (float) charging to maintain battery capacity.

    The bq2031 Lead-Acid Fast Charge IC is designed to optimize charging of lead-acid chemistry batteries. A flexible pulse-width modulation regulator allows the bq2031 to control constant-voltage, constant-current, or pulsed-current charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum for high charge current applications.

    A charge cycle begins when power is applied or the battery is replaced. For safety, charging is inhibited until the battery voltage is within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2031 provides trickle-currentcharging until the voltage rises into the allowed range or an internal timer runs out and places the bq2031 in a Fault condition. This procedure prevents high-current charging of cells that are possibly damaged or reversed. Charging is inhibited anytime the temperature of the battery is outside the configurable, allowed range. All voltage thresholds are temperature-compensated.

    The bq2031 terminates fast (bulk) charging based on the following:

  • Maximum voltage
  • Second difference of cell voltage (2V)
  • Minimum current (in constant-voltage charging)
  • Maximum time-out (MTO)
    • After bulk charging, the bq2031 provides temperature-compensated maintenance (float) charging to maintain battery capacity.
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    技術資料

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    種類 タイトル 最新の英語版をダウンロード 日付
    * データシート Lead-Acid Fast-Charge IC データシート 1999年 9月 5日

    購入と品質

    記載されている情報：
    • RoHS
    • REACH
    • デバイスのマーキング
    • リード端子の仕上げ / ボールの原材料
    • MSL 定格 / ピーク リフロー
    • MTBF/FIT 推定値
    • 使用原材料
    • 認定試験結果
    • 継続的な信頼性モニタ試験結果
    記載されている情報：
    • ファブの拠点
    • 組み立てを実施した拠点

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