BQ24023 datasheet(7/22 Pages) TI

Part #	BQ24023

Description	SINGLE-CHIP, LI-ION AND LI-POL CHARGER IC WITH AUTONOMOUS USB-PORT AND AC-ADAPTER SUPPLY MANAGEMENT (bqTINY-II)

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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bq24020,, bq24022,, bq24023

bq24024, bq24025, bq24026

bq24027

SLUS549D – DECEMBER 2002 – REVISED MARCH 2006

Terminal Functions

TERMINAL

NAME

I/O

DESCRIPTION

bq24020

bq24022

bq24023

bq24024

bq24026

bq24025

bq24027

AC

1

I

AC charge input voltage

CE

8

9

8

-

I

Charge enable input (active low)

Charge current set point for AC input and precharge and taper

ISET1

6

I

set point for both AC and USB

Charge current set point for USB port (high=500 mA, low=100

ISET2

7

I

mA, hi-z = disable USB charge)

OUT

10

O

Charge current output

PG

-

8

-

O

powergood status output (active low)

STAT1

3

O

Charge status output 1 (open-drain)

STAT2

4

O

Charge status output 2 (open-drain)

TE

-

8

I

Timer enable input (active low)

TS

9

-

9

I

Temperature sense input

TTE

-

9

8

-

I

Timer and termination enable input (active low)

USB

2

I

USB charge input voltage

VSS

5

-

Ground input

There is an internal electrical connection between the

exposed thermal pad and VSS pin of the device. The exposed

Exposed

thermal pad must be connected to the same potential as the

Thermal

pad

-

VSS pin on the printed circuit board. Do not use the thermal

Pad

pad as the primary ground input for the device. VSS pin

must be connected to ground at all times

7

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