BQ77PL157A4225_TI 用于 3 至 6 节锂离子/锂聚合物电池的电压保护

制造厂商：TI
产品类别：电源管理
技术类目：电池管理 IC - 电池保护器
功能描述：用于 3 至 6 节锂离子/锂聚合物电池的电压保护
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BQ77PL157A4225的产品详情：

The bq77PL157 is a stackable overvoltage protection device for 3, 4, 5 or 6 series cell Li-Ion battery packs. This device incorporates a precise and accurate overvoltage detection circuit with preconfigured threshold limits. Additional features include the ability to stack multiple parts to monitor up to 18 series cells.

FUNCTION

Each series cell in a Li-Ion battery pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq77PL157 starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes state and the LVO pin becomes active.

If multiple bq77PL157 devices are stacked, the LVIN pin of the next-lower device receives the LVO pin from the above device and similarly starts a shortened delay timer before activating its OUT pin. (No additional isolation or level-shift circuitry is required.) The lowest bq77PL157 in the string is used to activate a power MOSFET located in the low side of the power path.

BQ77PL157A4225的优势和特性：

Single IC Li-Ion Protection for 3-Series to 6-Series Cells

Stackable to Protect up to 18-Series Cells

Programmable Detection Time Delay

Low Power Consumption

Typical 2-μA to 2.5-μA Normal Mode

Fixed 4.225 V Overvoltage Threshold

Highly Accurate: ±20-mV MAX, TA = 0°C to 50°C

Output Activation for Low Side FET (Contact TI for Alternate Output Options: High/Low-side Fuse or FET)

Protected Output, Power, and Ground Pins for Added Safety and Reliability

Permanent or Recoverable Fault Options

16-pin Small Outline Package

APPLICATIONS

Primary or Secondary Level Voltage Protection for Li-Ion Battery Packs for Use in:
- Power Tools
- UPS Systems
- E-Bikes, Scooters, and Small Mobility Vehicles
- Medical Devices, Test Equipment, and Industrial Products

BQ77PL157A4225的参数（英文）：

Function
Protection
Number of series cells (Min)
3, 4, 5, 6
Number of series cells (Max)
4, 5, 6
Features
Overvoltage, Stackable, FET drive
Typical operating current (Typ) (uA)
2
Rating
Catalog
Vin (Max) (V)
30

BQ77PL157A4225具体的完整产品型号参数及价格（美元）：

BQ77PL157A4225的完整型号有：BQ77PL157APW-4225、BQ77PL157APWR-4225，以下是这些产品的关键参数及官网采购报价：

BQ77PL157APW-4225，工作温度：-40 to 85，封装：TSSOP (PW)-16，包装数量MPQ：90个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ77PL157APW-4225的批量USD价格：.706（1000+）

BQ77PL157APWR-4225，工作温度：-40 to 85，封装：TSSOP (PW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ77PL157APWR-4225的批量USD价格：.588（1000+）

BQ77PL157A4225的评估套件：

BQ77PL157A4225的电路图解：

BQ77PL157A4225的评估套件：