產品詳細資料

Function Protection Number of series cells (min) 3, 4, 5, 6 Number of series cells (max) 4, 5, 6, 7 Features FET drive, Open wire (OW), Over-temperature (OT), Overvoltage, Stackable, Undervoltage Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 38.5 TI functional safety category Functional Safety-Capable Overvoltage protection 4.275, 4.325 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 4.325 Battery overvoltage protection (max) (V) 4.325
Function Protection Number of series cells (min) 3, 4, 5, 6 Number of series cells (max) 4, 5, 6, 7 Features FET drive, Open wire (OW), Over-temperature (OT), Overvoltage, Stackable, Undervoltage Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 38.5 TI functional safety category Functional Safety-Capable Overvoltage protection 4.275, 4.325 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 4.325 Battery overvoltage protection (max) (V) 4.325
WSON (DSS) 12 6 mm² 3 x 2
  • 3-series cell to 7-series cell protection
  • High-accuracy overvoltage protection
    • ± 10 mV at 25°C
    • ± 20 mV from 0°C to 60°C
  • Overvoltage protection options from 3.55 V to 5.1 V
  • Undervoltage protection with options from 1.0 V to 3.5 V
  • 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 6 V
    • Open drain with ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100 nA with open-wire detection disabled
  • Package footprint option
    • 12-pin WSON with 0.5-mm lead pitch
  • 3-series cell to 7-series cell protection
  • High-accuracy overvoltage protection
    • ± 10 mV at 25°C
    • ± 20 mV from 0°C to 60°C
  • Overvoltage protection options from 3.55 V to 5.1 V
  • Undervoltage protection with options from 1.0 V to 3.5 V
  • 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 6 V
    • Open drain with ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100 nA with open-wire detection disabled
  • Package footprint option
    • 12-pin WSON with 0.5-mm 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.

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.

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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. A) PDF | HTML 2022年 6月 28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)。

開發板

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。

使用指南: PDF
TI.com 無法提供
參考設計

TIDA-010268 — 具有低壓側 MOSFET 控制的 5s 至 7s 電池組監控器參考設計

此參考設計是高電池芯電壓準確度 5s 至 7s 鋰離子、磷酸鐵鋰 (LiFePO4) 電池組設計。此設計以高準確度監控各電池芯電壓、電池組電流、電池芯和金屬氧化半導體場效電晶體 (MOSFET) 溫度,並保護鋰離子和 LiFePO4 電池組免於發生電池芯過電壓、電池芯欠電壓、過熱、充電和放電過電流和放電短路狀況。此產品採用低壓側 N 通道 MOSFET 架構,並具有強大驅動開啟和關閉能力。這些功能讓此參考設計非常適用於電動工具與吸塵器電池組應用。
Design guide: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DSS) 12 Ultra Librarian

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內含資訊:
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  • 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
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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