BQ24018DRCT datasheet(3/24 Pages) TI1

Part #	BQ24018DRCT

Description	Single-Chip, Li-Ion Charge Management IC

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Manufacturer	TI1 [Texas Instruments]

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(

)

SET

PRECHG

SET

O(PRECHG)

K

x V

(

)

(

)

I

=

R(

)

æ

ö

ç

÷

m

ç

÷

è

ø

ISET

O(OUT)

V(

)

I

= K

+ 10 A

(

) x

R(

)

(

)

SET

O(OUT)

K

x V

(

)

(

)

I

=

R(

)

(1)

(4)

bq24010, bq24012

bq24013, bq24014, bq24018

www.ti.com

SLUS530K – SEPTEMBER 2002 – REVISED JANUARY 2014

ELECTRICAL CHARACTERISTICS (continued)

over 0°C

≤ TJ ≤ 125°C and recommended supply voltage, (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TA = 25°C

–0.5%

0.5%

Voltage regulation accuracy

–1%

1%

V(DO)

Dropout voltage (V(IN) – V(OUT))

VO(REG) + V(DO–MAX)) ≤ VCC, IO(OUT) = 1A

650

790

mV

CURRENT REGULATION

VCC ≥ 4.5 V, VIN ≥ 4.5 V, VI(BAT) > V(LOWV),

100

1000

VIN – VI(BAT) > V(DO–MAX)

IO(OUT)

(1)

Output current range

mA

See note (2)

25

100

bq24010,

bq24012,

Voltage on ISET pin, VCC ≥ 4.5 V,

2.45

2.50

2.55

V

bq24013,

V(SET)

Output current set voltage

VIN ≥ 4.5 V, VI(BAT) > V(LOWV),

bq24014

VIN – VI(BAT) > V(DO–MAX), VO(REG) = 4.2 V

bq24018

2.548

2.6

2.652

V

50 mA

≤ IO(OUT) ≤ 1000 mA, V(LOWV) < V(OUT) < V(RCH)

315

335

355

25 mA

≤ IO(OUT) < 50 mA, V(LOWV) < V(OUT) < V(RCH)

315

372

430

K(SET)

Output current ISET factor

10 mA

≤ IO(OUT) < 100 mA, V(OUT) < V(LOWV)

350

1000

2.5 mA

≤ IO(OUT) < 10 mA, V(OUT) < V(LOWV)

450

2.5 mA

≤ IO(OUT) < I(PGM), V(OUT) < V(RCH)

355(3)

PRE-CHARGE AND SHORT-CIRCUIT CURRENT REGULATION

Pre-charge to fast-charge transition

V(LOWV)

Voltage on BAT pin

2.80

2.95

3.10

V

threshold

Pre-charge to short-charge transition

V(SC)

Voltage on BAT pin

1

1.4

1.8

V

threshold

IO(PRECHG)

(4)

Pre-charge range

V(SC) < VI(BAT) < V(LOWV), t < t(PRECHG)

10

100

mV

V(PRECHG)

Pre-charge set voltage

Voltage on ISET pin, V(SC) < VI(BAT) < V(LOWV)

225

250

280

mV

ISC

Short circuit current

V(SC) > VI(BAT)

660

900

1200

μA

(2)

Specified by design. Not production tested.

(3)

The ISET pin may be used as a current monitor during voltage regulation by applying the following equation:

This equation is also used for calculating the termination point.

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Product Folder Links: bq24010, bq24012 bq24013, bq24014, bq24018

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