BQ2969T

アクティブ

2 ~ 4 個の直列セルのリチウムイオン バッテリ向け、CTR (電流伝達率) または PTC (正の温度係数) センス機能搭載、過電圧保護機能

製品詳細

Function Protection Number of series cells (min) 2 Number of series cells (max) 4 Features LDO output, Overvoltage, Single pin output drive, Temp Monitoring (Thermistor Pin), Undervoltage Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 20 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.55 Battery overvoltage protection (max) (V) 5.1
Function Protection Number of series cells (min) 2 Number of series cells (max) 4 Features LDO output, Overvoltage, Single pin output drive, Temp Monitoring (Thermistor Pin), Undervoltage Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 20 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.55 Battery overvoltage protection (max) (V) 5.1
WSON (DSG) 8 4 mm² 2 x 2
  • 2-series, 3-series, and 4-series cell overvoltage protection (OVP)
  • Factory programmed OVP threshold (3.6V to 5.2V) with ±12mV accuracy
  • Fixed delay timer to trigger FET drive output (0.25s to 6.5s options)
  • Control input pin, which can implement cell overtemperature protection (OT) using external PTC thermistor
  • Integrated 3mA regulated output programmable to 3.8V, 3.3V, 3.15V, 3.0V, 2.5V, 1.8V, or 1.5V
  • Factory programmed undervoltage (UV) detection threshold (1V to 4.15V) to disable regulator
    • OVP and OT remains operational even in undervoltage condition
  • Output pin options:
    • Active high
    • Open-drain - active pulldown
    • Open-drain - inactive pulldown
  • Multiple power modes:
    • NORMAL mode - no OV or UV: ICC ≅ 1.23µA
    • Undervoltage or disable mode - UV detected or control input low: ICC ≅ 0.25µA
    • Overvoltage mode - OV detected: ICC ≅ 15µA
  • Low leakage current per cell input < 100nA
  • Small package footprint
    • 8-Pin WSON (2mm × 2mm)
  • 2-series, 3-series, and 4-series cell overvoltage protection (OVP)
  • Factory programmed OVP threshold (3.6V to 5.2V) with ±12mV accuracy
  • Fixed delay timer to trigger FET drive output (0.25s to 6.5s options)
  • Control input pin, which can implement cell overtemperature protection (OT) using external PTC thermistor
  • Integrated 3mA regulated output programmable to 3.8V, 3.3V, 3.15V, 3.0V, 2.5V, 1.8V, or 1.5V
  • Factory programmed undervoltage (UV) detection threshold (1V to 4.15V) to disable regulator
    • OVP and OT remains operational even in undervoltage condition
  • Output pin options:
    • Active high
    • Open-drain - active pulldown
    • Open-drain - inactive pulldown
  • Multiple power modes:
    • NORMAL mode - no OV or UV: ICC ≅ 1.23µA
    • Undervoltage or disable mode - UV detected or control input low: ICC ≅ 0.25µA
    • Overvoltage mode - OV detected: ICC ≅ 15µA
  • Low leakage current per cell input < 100nA
  • Small package footprint
    • 8-Pin WSON (2mm × 2mm)

The BQ2969T family is a high-accuracy, low-power overvoltage protector with a 3mA regulated output supply and control / PTC input for Li-ion and LiFePO4 (LFP) battery pack applications.

Each cell in a 2-series to 4-series cell stack is individually monitored for an overvoltage condition. An internal fixed-delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output pin is triggered into an active state to indicate that an overvoltage condition has occurred.

The regulated output supply delivers up to 3mA output current to drive always-on circuits, such as a real-time clock (RTC) oscillator. The BQ2969T family has a self-disable function to turn off the regulated output if any cell voltage falls below a programmable undervoltage threshold, thereby preventing drain on the battery.

The BQ2969T family includes a CTL pin which can be used to assert the OUT pin upon demand. The device also supports overtemperature (OT) protection when a PTC thermistor is attached between the CTL and VDD pins on the device.

The BQ2969T family provides exceptionally low power operation, drawing only 1.23µA during normal operation (excluding regulator load current), and dropping to 0.25uA when in an undervoltage condition. Even when in the undervoltage state, the device can still detect an overvoltage condition on any other cell (which can occur in an imbalanced pack) and can assert the output pin.

The BQ2969T family is a high-accuracy, low-power overvoltage protector with a 3mA regulated output supply and control / PTC input for Li-ion and LiFePO4 (LFP) battery pack applications.

Each cell in a 2-series to 4-series cell stack is individually monitored for an overvoltage condition. An internal fixed-delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output pin is triggered into an active state to indicate that an overvoltage condition has occurred.

The regulated output supply delivers up to 3mA output current to drive always-on circuits, such as a real-time clock (RTC) oscillator. The BQ2969T family has a self-disable function to turn off the regulated output if any cell voltage falls below a programmable undervoltage threshold, thereby preventing drain on the battery.

The BQ2969T family includes a CTL pin which can be used to assert the OUT pin upon demand. The device also supports overtemperature (OT) protection when a PTC thermistor is attached between the CTL and VDD pins on the device.

The BQ2969T family provides exceptionally low power operation, drawing only 1.23µA during normal operation (excluding regulator load current), and dropping to 0.25uA when in an undervoltage condition. Even when in the undervoltage state, the device can still detect an overvoltage condition on any other cell (which can occur in an imbalanced pack) and can assert the output pin.

ダウンロード 字幕付きのビデオを表示 ビデオ

技術資料

star =TI が選定したこの製品の主要ドキュメント
結果が見つかりませんでした。検索条件をクリアしてから、再度検索を試してください。
1 をすべて表示
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 BQ2969T Overvoltage and Overtemperature Protection for 2-Series, 3-Series, and 4-Series Cell Li-Ion Batteries with LDO Output and Control / PTC Input データシート (Rev. A) PDF | HTML 2025年 5月 30日

設計および開発

その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。

評価ボード

BQ2969TEVM — BQ296900T、2 直列 ~ 4 直列、高精度リチウムイオンバッテリ過電圧および過熱プロテクタの評価基板

BQ2969T 評価基板 (EVM) は、BQ2969T 向けの包括的な評価システムです。この製品は、2 直列 ~ 4 直列のリチウムイオンおよび LiFePO4 バッテリ パックに対応する高精度低消費電力過電圧プロテクタです。この評価基板 (EVM) は、BQ2969T の保護機能をシンプルに評価する目的で使用する BQ2969T 回路モジュールを採用しています。この回路モジュールは、1 個の BQ2969T 統合回路 (IC) に加えて、4 直列セルのリチウムイオンまたはリチウムポリマ バッテリ (...)

ユーザー ガイド: PDF | HTML
パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
WSON (DSG) 8 Ultra Librarian

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

推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。

サポートとトレーニング

TI E2E™ フォーラムでは、TI のエンジニアからの技術サポートを提供

コンテンツは、TI 投稿者やコミュニティ投稿者によって「現状のまま」提供されるもので、TI による仕様の追加を意図するものではありません。使用条件をご確認ください。

TI 製品の品質、パッケージ、ご注文に関するお問い合わせは、TI サポートをご覧ください。​​​​​​​​​​​​​​

ビデオ