BQ24070RHLT datasheet(6/33 Pages) TI1

Part #	BQ24070RHLT

Description	System Power-Path Management IC

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Manufacturer	TI1 [Texas Instruments]

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6 / 33 page

bq24070, bq24071

SLUS694G – MARCH 2006 – REVISED DECEMBER 2014

www.ti.com

Electrical Characteristics (continued)

over junction temperature range (0°C

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OUT PIN - BATTERY SUPPLEMENT MODE

Enter battery supplement mode

VI(OUT)

VBSUP1

(battery supplements OUT current

VI(BAT)> 2 V

≤ VI(BAT)

in the presence of input source

– 60 mV

V

VI(OUT)

VBSUP2

Exit battery supplement mode

VI(BAT)> 2 V

≥ VI(BAT)

– 20 mV

OUT PIN - SHORT CIRCUIT

Current source between BAT to OUT for

IOSH1

BAT to OUT short-circuit recovery

short-circuit recovery to

10

mA

VI(OUT) ≤ VI(BAT) –200 mV

RSHIN

IN to OUT short-circuit limit

VI(OUT) ≤ 1 V

500

Ω

BAT PIN CHARGING – PRECHARGE

Precharge to fast-charge transition

V(LOWV)

Voltage on BAT

2.9

3

3.1

V

threshold

Deglitch time for fast-charge to

tFALL = 100 ns, 10 mV overdrive,

TDGL(F)

22.5

ms

precharge transition(4)

VI(BAT) decreasing below threshold

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

IO(PRECHG)

Precharge range

10

150

mA

IO(PRECHG) = (K(SET) × V(PRECHG))/ RSET

V(PRECHG)

Precharge set voltage

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

225

250

275

mV

BAT PIN CHARGING - CURRENT REGULATION

VI (BAT) > V(LOWV), Mode = High

IO(BAT)

Battery charge current range(5)

IOUT(BAT) = (K(SET) × V(SET) / RSET),

100

1000

1500

mA

VI(OUT) > VO(OUT-REG) + V(DO-MAX)

RPBAT

BAT to OUT pullup

VI (BAT)< 1 V

1000

Ω

Voltage on ISET1, VVCC ≥ 4.35 V,

Battery charge current set

V(SET)

VI(OUT)- VI(BAT) > V(DO-MAX),

2.47

2.50

2.53

V

voltage(6)

VI(BAT) > V(LOWV)

100 mA

≤ IO(BAT) ≤ 1.5 A

375

425

450

K(SET)

Charge current set factor, BAT

10 mA

≤ IO(BAT) ≤ 100 mA

(7)

300

450

600

USB MODE INPUT CURRENT LIMIT

ISET2 = Low

80

90

100

I(USB)

USB input port current range

mA

ISET2 = High

400

500

BAT PIN CHARGING VOLTAGE REGULATION, VO (BAT-REG) + V (DO-MAX) < VCC, ITERM < IBAT(OUT) ≤ 1 A

Battery charge voltage

4.2

V

VO(BAT-REG)

TA = 25°C

–0.5%

0.5%

Battery charge voltage regulation

accuracy

–1%

1%

CHARGE TERMINATION DETECTION

Charge termination detection

VI(BAT) > V(RCH),

I(TERM)

10

150

mA

range

I(TERM) = (K(SET) × V(TERM))/ RSET

VI(BAT) > V(RCH) , Mode = High

230

250

270

Charge termination set voltage,

V(TERM)

mV

measured on ISET1

VI(BAT) > V(RCH) , Mode = Low

95

100

130

tFALL = 100 ns, 10 mV overdrive,

Deglitch time for termination

TDGL(TERM)

ICHG increasing above or decreasing below

22.5

ms

detection

threshold

TEMPERATURE SENSE COMPARATORS

VLTF

High voltage threshold

Temp fault at V(TS) > VLTF

2.465

2.500

2.535

V

VHTF

Low voltage threshold

Temp fault at V(TS) < VHTF

0.485

0.500

0.515

V

ITS

Temperature sense current source

94

100

106

μA

R(TMR) = 50 kΩ, VI(BAT) increasing or

Deglitch time for temperature fault

TDGL(TF)

decreasing above and below;

22.5

ms

detection(4)

100-ns fall time, 10-mv overdrive

(4)

All deglitch periods are a function of the timer setting and is modified in DPPM or thermal regulation modes by the percentages that the

program current is reduced.

(5)

When input current remains below 2 A, the battery charging current may be raised until the thermal regulation limits the charge current.

(6)

For half-charge rate, V(SET) is 1.25 V ± 25 mV.

(7)

Specification is for monitoring charge current through the ISET1 pin during voltage regulation mode, not for a reduced fast-charge level.

6

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