Datasheet > BQ77PL157A4225_1

BQ77PL157A4225_1

更新时间： 2024-01-04 11:08:29

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
16页	520K
描述
Voltage Protection for 3 to 6 Series Cell Lithium-Ion/Polymer Batteries

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BQ77PL157A4225_1 数据手册

bq77PL157A4225

www.ti.com

SLUSA00 –MARCH 2010

Voltage Protection for 3 to 6 Series Cell Lithium-Ion/Polymer Batteries

Check for Samples: bq77PL157A4225

FEATURES

DESCRIPTION

•

Single IC Li-Ion Protection for 3 to 6 Series

Cells

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. Preconfigured options include latched

(permanent) or recoverable fault output, as well as

specific voltage threshold limits selectable in 25 mV

steps.

•

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 Overvoltage Thresholds Available From

3.75 V to 4.35 V in 25-mV Steps

Highly Accurate: ±20 mV MAX, T_A= 0°C to

50°C

FUNCTION

Output Activation for Low Side FET

(Contact TI for Alternate Output Options:

High/Low-side Fuse or FET.)

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.

•

Protected Output, Power, and Ground Pins for

Added Safety and Reliability

•

Permanent or Recoverable Fault Options

16-pin Small Outline Package

If multiple bq77PL157 devices are stacked, the LVIN

pin of the next-lower device receives the LVO pin

APPLICATIONS

from the above device and similarly starts

•

Primary or Secondary Level Voltage Protection

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.

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

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...16

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与BQ77PL157A4225_1相关器件

型号	品牌	获取价格	描述	数据表
BQ77PL157APW-4225	TI	获取价格	Voltage Protection for 3 to 6 Series Cell Lithium-Ion/Polymer Batteries
BQ77PL157APWR-4225	TI	获取价格	Voltage Protection for 3 to 6 Series Cell Lithium-Ion/Polymer Batteries
BQ77PL900	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lithium-Polymer Battery Protector and Analog Front
BQ77PL900_1	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lithium-Polymer Battery Protector and Analog Front
BQ77PL900_2	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lifthium-Polymer Battery Protector and Analog Front
BQ77PL900DL	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lithium-Polymer Battery Protector and Analog Front
BQ77PL900DLG4	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lifthium-Polymer Battery Protector and Analog Front
BQ77PL900DLR	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lithium-Polymer Battery Protector and Analog Front
BQ77PL900DLRG4	TI	获取价格	Five to Ten Series Cell Lithium-Ion or Lifthium-Polymer Battery Protector and Analog Front
BQ78350DBT-R1A	TI	获取价格	CEDV 锂离子电池电量监测计和电池管理控制器 \| DBT \| 30 \| -40 to 8

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