BQ21088
- 1A linear battery charger
-
3.0V to 5.5V input voltage operating range for battery-to-battery charging and USB adapters
- Configurable battery regulation voltage with 0.5% accuracy from 3.6V to 4.65V in 10mV steps
- Li-ion, Li-Poly, and LiFePO4 chemistries support
- 5mA to 1A configurable fast charge current
- 55mΩ battery FET ON resistance
- Up to 3A discharge current to support high system loads
- Configurable NTC charging profile thresholds including JEITA support
-
- Power path management for powering the system and charging the battery
- Regulated system voltage (SYS) ranging from 4.4V to 4.9V addition to battery voltage tracking and input pass-though options
- Battery Tracking input voltage dynamic power management (VINDPM) for high impedance input sources
- Ultra low quiescent current
- 4µA in Battery Only mode
- 30µA Input adapter Iq in sleep mode
- One push-button wake-up and reset input
- Integrated fault protection
- Input overvoltage protection (VIN_OVP)
- Battery short protection (BATSC)
- Battery overcurrent protection (BATOCP)
- Input current limit protection (ILIM)
- Thermal regulation (TREG) and thermal shutdown (TSHUT)
- Battery thermal fault protection (TS)
- Watchdog and safety timer fault
The BQ21088 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in an 8-ball chipscale package which does not need HDI PCB process for fabrication thereby reducing the PCB cost. The device can support up to 1A charging and system loads of up to 3A.
The battery is charged using a standard Li-ion or LiFePO4 charge profile with three phases: precharge, constant current and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is also optimized for battery to battery charging with 3V minimum input voltage operation and can withstand 25V absolute maximum line transients. The device integrates a single push-button input to reduce the total solution footprint.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ21088 I2 C Controlled, 1-Cell, 1A Linear Battery Charger with Power Path, Ship Mode, Shutdown Mode, and Battery Tracking VINDPM datasheet | PDF | HTML | 2024年 11月 19日 |
| EVM User's guide | BQ21088 Evaluation Module User's Guide | PDF | HTML | 2024年 10月 29日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
BQ21088EVM — BQ21088 評估模組
BQ21088 評估模組 (EVM) 可評估 BQ21088 裝置。BQ21088 裝置是整合式電池充電管理 IC，其中整合了穿戴式裝置最常見的功能：線性充電器、穩壓輸出、計時器手動重設、運送模式、關機模式與進階電源路徑。運作和關機期間的低靜態電流 (IQ) 可實現最長的電池使用壽命。EVM 支援高達 1A 的充電電流，以及高達 3A 的 SYS 電流。其提供用於裝置按鈕功能評估的外部 MR、用於 TS 功能評估的 TS 電位計電路，以及用於 I2C 介接功能的 USB2ANY 連接埠。其也包括適用於數位上拉軌的分離式 LDO 穩壓器，並配備跨接器以進行配置。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YBG) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。