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バッテリ管理 IC
バッテリ チャージャ IC

BQ2954

最終購入段階

スイッチ モード、リチウムイオン充電コントローラ

ご注文はこちら
データシート

BQ2954

最終購入段階
データシート ご注文はこちら

製品詳細

Rating Catalog Number of series cells 1, 2, 3, 4 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 2 Features BAT temp thermistor monitoring (JEITA 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) 0 to 70
Rating Catalog Number of series cells 1, 2, 3, 4 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 2 Features BAT temp thermistor monitoring (JEITA 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) 0 to 70
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6
  • Safe charge of Li-Ion battery packs
  • Pulse-width modulation control for current and voltage regulation
  • Programmable high-side/low-side current-sense
  • Fast charge terminated by selectable minimum current; safety backup termination at maximum time
  • Precharge qualification detects shorted or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Direct LED control outputs to display charge status and fault conditions
  • Safe charge of Li-Ion battery packs
  • Pulse-width modulation control for current and voltage regulation
  • Programmable high-side/low-side current-sense
  • Fast charge terminated by selectable minimum current; safety backup termination at maximum time
  • Precharge qualification detects shorted or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Direct LED control outputs to display charge status and fault conditions

The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design minimizes power dissipation.

For safety, the bq2954 inhibits fast charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2954 provides low-current conditioning of the battery.

For charge qualification, the bq2954 uses an external thermistor to measure battery temperature. Charging begins when power is applied or the battery is inserted

The bq2954 charges a battery in two phases. First a constant-current phase replenishes approximately 70% of battery capacity. Then a voltage- regulation phase completes the battery charge.

The bq2954 provides status indications of all charger states and faults for accurate determination of the battery and charge-system conditions.

The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design minimizes power dissipation.

For safety, the bq2954 inhibits fast charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2954 provides low-current conditioning of the battery.

For charge qualification, the bq2954 uses an external thermistor to measure battery temperature. Charging begins when power is applied or the battery is inserted

The bq2954 charges a battery in two phases. First a constant-current phase replenishes approximately 70% of battery capacity. Then a voltage- regulation phase completes the battery charge.

The bq2954 provides status indications of all charger states and faults for accurate determination of the battery and charge-system conditions.
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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート Lithium Ion Charge Management IC with Integrated Switching Controller 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：
  • ファブ拠点
  • アセンブリ拠点