BQ77904_V04 datasheet(5/46 Pages) TI

Numer części	BQ77904

Szczegółowy opis	BQ77904, BQ77905 3-Series to 20-Series Ultra Low-Power Voltage, Current, Temperature, and Open-Wire Stackable Lithium-Ion Battery Protector

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thresholds must be determined in mV. Refers to the overtemperature and undertemperature mV threshold in the Electrical

Characteristics table.

6 Pin Configuration and Functions

Not to scale

1

VDD

20

DVSS

2

AVDD

19

CTRD

3

VC5

18

CTRC

4

VC4

17

CCFG

5

VC3

16

VTB

6

VC2

15

TS

7

VC1

14

LD

8

AVSS

13

CHG

9

SRP

12

CHGU

10

SRN

11

DSG

Figure 6-1. PW Package 20-Pin TSSOP Top View

Pin Functions

I/O

(1)

DESCRIPTION

NAME

NO.

AVDD

2

O

Analog supply (only connect to a capacitor)

AVSS

8

P

Analog ground

CCFG

17

I

Cell in series-configuration input

CHG

13

O

CHG FET driver. Use on a single device or on the bottom device of a stack

configuration.

CHGU

12

O

CHG FET signal. Use for the upper device of a stack configuration to feed the CHG

signal to the CTRC pin of the lower device.

CTRC

18

I

CHG and DSG override inputs

CTRD

19

I

DSG

11

O

DSG FET driver

DVSS

20

P

Digital ground

LD

14

I

PACK– load removal detection

SRN

10

I

Current sense input connecting to the PACK– side of sense resistor

SRP

9

I

Current sense input connecting to the battery side of sense resistor

TS

15

I

Thermistor measurement input. Connect a 10-kΩ resistor to AVSS pin if the function is

not used.

VC1

7

I

Cell voltage sense inputs

VC2

6

I

VC3

5

I

VC4

4

I

VC5

3

I

Cell voltage sense inputs (Pin 3 must be connected to Pin 4 on the BQ77904 device.)

VDD

1

P

Supply voltage

VTB

16

O

Thermistor bias output

(1)

I = Input, O = Output, P = Power

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BQ77904, BQ77905

SLUSCM3K – APRIL 2020 – REVISED JULY 2020

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Product Folder Links: BQ77904 BQ77905

Podobny numer części - BQ77904_V04

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Texas Instruments	BQ77904	1Mb / 47P	[Old version datasheet] bq77904, bq77905 3-Series to 20-Series Ultra Low-Power Voltage, Current, Temperature, and Open-Wire Stackable Lithium-Ion Battery Protector
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