Datasheet > BQ7721605

BQ7721605

更新时间： 2022-05-14 22:19:06

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
25页	1529K
描述
BQ77216 Voltage and Temperature Protection for 3-Series to 16-Series Cell Li-Ion Batteries with Internal Delay Timer

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BQ7721605 数据手册

BQ77216

SLUSE36B – DECEMBER 2020 – REVISED JULY 2021

BQ77216 Voltage and Temperature Protection for 3-Series to 16-Series Cell Li-Ion

Batteries with Internal Delay Timer

1 Features

3 Description

•

3-series cell to 16-series cell protection

High-accuracy over voltage 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

Random cell connection

The BQ77216 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 thermistor, the device can detect

overtemperature conditions.

•

In the BQ77216 device, an internal delay timer

is initiated upon detection of an overvoltage,

Functional safety-capable

undervoltage,

open-wire,

overtemperature

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

condition. Upon expiration of the delay timer, the

respective output is triggered into its active state

(either high or low, depending on the configuration).

Device Information Table

PART NUMBER

PACKAGE

BODY SIZE (NOM)

4.40 mm x 7.80 mm

(6.40 mm x 7.80 mm,

including leads)

BQ7721600⁽¹⁾

TSSOP (24)

•

Low power consumption I_CC≈ 1 µA

(V_CELL(ALL)< V_OV

)

(1) Contact TI for more information.

Low leakage current per cell input < 100 nA with

open wire detection disabled

Package footprint options:

PACK+

Fuse or

Back-to-Back FETs

C_VD

– Leaded 24-pin TSSOP with 0.65-mm lead pitch

2 Applications

VDD

•

Protection for Li-ion battery packs used in:

– Handheld garden tools

– Handheld power tools

R_IN

V16

C_IN

DOUT

– Cordless vacuum cleaners

– UPS battery backup

– Light electric vehicles (eBike, eScooter, pedal

assist bicycles)

R_IN

C_IN

VSS

R_DOUT

GND

COUT

R_COUT

R_NTC

PACKœ

GND

Simplified Schematic

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...25

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