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BQ2969

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适用于 2 节、3 节和 4 节串联锂离子电池且具有稳压输出电源的过压保护器

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BQ2969

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产品详情

Function Protection Number of series cells (min) 2 Number of series cells (max) 4 Features LDO output, Overvoltage, Single pin output drive, Undervoltage Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 20 Operating temperature range (°C) -40 to 105 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, Undervoltage Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 20 Operating temperature range (°C) -40 to 105 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)
  • Output pin options:
    • Active high
    • Open-drain - active pulldown
    • Open-drain - inactive pulldown
  • 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 remains operational even in undervoltage condition
  • Multiple power modes:
    • NORMAL mode - no OV or UV: ICC ≅ 1.23µA
    • Undervoltage mode - UV detected: ICC ≅ 0.25µA
    • Overvoltage mode - OV detected: ICC ≅ 19µA
  • 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)
  • Output pin options:
    • Active high
    • Open-drain - active pulldown
    • Open-drain - inactive pulldown
  • 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 remains operational even in undervoltage condition
  • Multiple power modes:
    • NORMAL mode - no OV or UV: ICC ≅ 1.23µA
    • Undervoltage mode - UV detected: ICC ≅ 0.25µA
    • Overvoltage mode - OV detected: ICC ≅ 19µA
  • Low leakage current per cell input < 100nA
  • Small package footprint
    • 8-Pin WSON (2mm × 2mm)

The BQ2969 family is a high-accuracy, low-power overvoltage protector with a 3mA regulated output supply 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 internally 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 BQ2969 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 BQ2969 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 BQ2969 family is a high-accuracy, low-power overvoltage protector with a 3mA regulated output supply 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 internally 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 BQ2969 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 BQ2969 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.
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类型 标题 下载最新的英语版本 日期
* 数据表 BQ2969 Overvoltage Protection for 2-Series, 3-Series, and 4-Series Cell Li-Ion Batteries with Regulated Output Supply 数据表 PDF | HTML 2024年 8月 2日
EVM 用户指南 BQ2969 评估模块 PDF | HTML 英语版 PDF | HTML 2024年 7月 12日

设计和开发

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评估板

BQ2969EVM — BQ2969 评估模块

BQ2969EVM 评估模块 (EVM) 是适用于 BQ2969 的完整评估系统，BQ2969 是一款具有集成式 LDO 的高精度、低功耗过压保护器，适用于 2 至 4 节串联锂离子和磷酸铁锂电池包。此 EVM 包含一个 BQ2969 电路模块，用于轻松评估 BQ2969 保护功能。该电路模块包括一个 BQ2969 集成电路 (IC)，还包括可发出指示 4 节串联锂离子或锂聚合物电池包出现过充和过度放电情况的信号所需的所有其他板载元件。该电路模块可直接与各节电池相连，也可与电源和附带的电池仿真器电阻器相连。

用户指南: PDF | HTML
英语版: PDF | HTML
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  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
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