BQ77207
- 3-series cell to 7-series cell protection
- High-accuracy overvoltage protection
- ± 10mV at 25°C
- ± 20mV from 0°C to 60°C
- Overvoltage protection options from 3.55V to 5.1V
- Undervoltage protection with options from 1.0V to 3.5V
- Open-wire connection detection
- Overtemperature protection using NTC or PTC
- Random cell connection
- Functional safety-capable
- Fixed internal delay timers
- Fixed detections thresholds
- Fixed output drive type for each of COUT and DOUT
- Active high or active low
- Active high drive to 6V
- Open drain with ability to be pulled up externally to VDD
- Low power consumption ICC is approximately 1µA (VCELL(ALL) < VOV)
- Low leakage current per cell input < 100nA with open-wire detection disabled
- Package footprint option
- 12-pin WSON with 0.5mm lead pitch
The BQ77207 family of products provides a range of voltage and temperature monitoring including overvoltage (OVP), undervoltage (UVP), open wire (OW), and overtemperature (OT) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage, undervoltage, and open-wire conditions. With the addition of an external NTC or PTC thermistor, the device can detect overtemperature conditions.
In the BQ77207 device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire, or overtemperature condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).
The overvoltage triggers the COUT pin if a fault is detected, and undervoltage triggers the DOUT pin if a fault is detected. If an overtemperature or open-wire fault is detected, then both the DOUT and COUT will be triggered. For quicker production-line testing, the BQ77207 device provides a Customer Test Mode (CTM) with greatly reduced delay time.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ77207 Voltage and Temperature Protection for 3-Series to 7-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. C) | PDF | HTML | 2024年 10月 8日 |
| Functional safety information | BQ77207 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) | PDF | HTML | 2022年 2月 24日 | |
| User guide | BQ77207EVM User's Guide | 2021年 10月 28日 | ||
| Certificate | BQ77207EVM EU RoHS Declaration of Conformity (DoC) | 2021年 8月 26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)。
BQ77207EVM — BQ77207 評估模組，3 串聯至 7 串聯電池芯鋰離子電池電壓和溫度保護器
BQ77207EVM 評估模組 (EVM) 是適用於 BQ77207 的完整評估系統，其為 3 串聯至 7 串聯電池芯鋰離子電池保護積體電路。此電路模組包含一個 BQ77207 積體電路 (IC)、熱敏電阻和所有其他必要的板載元件，以在 7 串聯電池芯鋰離子或鋰聚合物電池組中發出過度充電、過度放電和過熱訊號。
TIDA-010268 — 具有低壓側 MOSFET 控制的 5s 至 7s 電池組監控器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSS) | 12 | 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。