BQ25890RTWT datasheet(10/69 Pages) TI1

Part #	BQ25890RTWT

Description	Adjustable Voltage USB On-the-Go Boost Mode

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Manufacturer	TI1 [Texas Instruments]

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10

bq25890, bq25892

SLUSC86B – MARCH 2015 – REVISED MAY 2016

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Product Folder Links: bq25890 bq25892

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Electrical Characteristics (continued)

VVBUS_UVLOZ < VVBUS < VACOV and VVBUS > VBAT > VSLEEP, TJ = –40°C to +125°C and TJ = 25°C for typical values (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

BATTERY CHARGER

VBAT(REG_RANG

E)

Typical charge voltage range

3.840

4.608

V

VBAT(REG_STEP) Typical charge voltage step

16

mV

VBAT(REG)

Charge voltage resolution accuracy

VBAT = 4.208 V

(REG06[7:2]=010111) or

VBAT = 4.352 V

(REG06[7:2]=100000)

TJ = –40°C to +85°C

-0.5%

0.5%

I(CHG_REG_RAN

GE)

Typical fast charge current regulation range

0

5056

mA

I(CHG_REG_STEP

)

Typical fast charge current regulation step

64

mA

I(CHG_REG_ACC) Fast charge current regulation accuracy

VBAT = 3.1 V or 3.8 V, ICHG = 128

mA

TJ = –40°C to +85°C

-20%

20%

VBAT= 3.1 V or 3.8 V, ICHG = 256

mA

TJ = –40°C to +85°C

-10%

10%

VBAT= 3.1 V or 3.8 V, ICHG=1792

mA

TJ = –40°C to +85°C

-5%

5%

VBAT(LOWV)

Battery LOWV falling threshold

Fast charge to precharge,

BATLOWV (REG06[1]) = 1

2.6

2.8

2.9

V

Battery LOWV rising threshold

Precharge to fast charge,

BATLOWV (REG06[1])=1

(Typical 200-mV hysteresis)

2.8

3

3.1

V

I(PRECHG_RANG

E)

Precharge current range

64

1024

mA

I(PRECHG_STEP)

Typical precharge current step

64

mA

I(PRECHG_ACC)

Precharge current accuracy

VBAT=2.6 V, IPRECHG = 256 mA

–10%

+10%

I(TERM_RANGE)

Termination current range

64

1024

mA

I(TERM_STEP)

Typical termination current step

64

mA

I(TERM_ACC)

Termination current accuracy

ITERM = 256 mA, ICHG<= 1344

mA

TJ = –20°C to +85°C

–12%

12%

ITERM = 256 mA, ICHG> 1344 mA

TJ = –20°C to +85°C

–20%

20%

V(SHORT)

Battery short voltage

VBAT falling

2

V

V(SHORT_HYST)

Battery short voltage hysteresis

VBAT rising

200

mV

I(SHORT)

Battery short current

VBAT < 2.2 V

100

mA

V(RECHG)

Recharge threshold below VBATREG

VBAT falling, VRECHG

(REG06[0]=0) = 0

100

mV

VBAT falling, VRECHG

(REG06[0]=0) = 1

200

mV

IBAT(LOAD)

Battery discharge load current

VBAT = 4.2 V

15

mA

ISYS(LOAD)

System discharge load current

VSYS = 4.2 V

30

mA

RON(BATFET)

SYS-BAT MOSFET (BATFET) on-resistance

TJ = 25°C

11

13

m

Ω

TJ = –40°C to +125°C

11

19

m

Ω

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