BQ24108RHLR datasheet(6/26 Pages) TI

Part #	BQ24108RHLR

Description	SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POL CHARGE MANAGEMENT IC WITH INTEGRATED POWERFETS

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STAT1

IN

PG

VCC

TTC

ISET1

ISET2

RHL PACKAGE

(BOTTOM VIEW)

STAS2

PGND

CE

SNS

BAT

NC

TS

20

1

11

10

2

3

4

5

6

7

8

9

19

18

17

16

15

14

13

12

bq24100, bq24103

bq24105, bq24108

bq24113, bq24115

SLUS606C – JUNE 2004 – REVISED SEPTEMBER 2005

ELECTRICAL CHARACTERISTICS (continued)

T

J = 0°C to 125°C and recommended supply voltage range (unless otherwise stated)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

BATTERY DETECTION

Battery detection current during time-out

IDETECT

VI(BAT) < VOREG – VRCH

2

mA

fault

IDISCHRG1

Discharge current

VSHORT < VI(BAT) < VOREG – VRCH

400

µA

tDISCHRG1

Discharge time

VSHORT < VI(BAT) < VOREG – VRCH

1

s

IWAKE

Wake current

VSHORT < VI(BAT) < VOREG – VRCH

2

mA

tWAKE

Wake time

VSHORT < VI(BAT) < VOREG – VRCH

0.5

s

Begins after termination detected,

IDISCHRG2

Termination discharge current

400

µA

VI(BAT) ≤ VOREG

tDISCHRG2

Termination time

262

ms

OUTPUT CAPACITOR

Required output ceramic capacitor range

COUT

from SNS to PGND, between inductor and

4.7

10

47

µF

RSNS

Required SNS capacitor (ceramic) at SNS

CSNS

0.1

µF

PROTECTION

Threshold over VOREG to turn off P-channel

VOVP

OVP threshold voltage

MOSFET, STAT1, and STAT2 during charge

110

117

121

%VO(REG)

or termination states

ILIMIT

Cycle-by-cycle current limit

2.6

3.6

4.5

A

VSHORT

Short-circuit voltage threshold, BAT

VI(BAT) falling

1.95

2

2.05

V/cell

ISHORT

Short-circuit current

VI(BAT) ≤ VSHORT

35

65

mA

TSHTDWN

Thermal trip

165

°C

Thermal hysteresis

10

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

bq24100,

NAME

bq24103

bq24105

bq24113

bq24115

bq24108

Battery voltage sense input. Bypass it with a capacitor to PGND if there are

BAT

14

I

long inductive leads to battery.

Charger enable input. This active low input, if set high, suspends charge and

CE

16

I

places the device in the low-power sleep mode. Do not pull up this input to

VTSB.

6

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