TPS65720 datasheet(6/50 Pages) TI

Part #	TPS65720

Description	PMU for Bluetooth Headsets

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Manufacturer	TI [Texas Instruments]

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TPS65720

TPS65721

SLVS979 – OCTOBER 2009

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

VSYS = 3.6V, VDCDC1 = 2.05V, PFM mode, L = 3.3μH, COUTDCDC1 = 4.7μF, VINLDO1=2.05V, VLDO1=1.85V, TA = –40°C to 85°C

typical values apply in a temperature range of 10°C to 35°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOUT ≤

VBSUP1

Enter battery supplement mode

VBAT

V

–40mV

VOUT ≥

VBSUP2

Exit battery supplement mode

VBAT

V

–20mV

VO(SC1)

Output short-circuit detection threshold, power-on

0.8

0.9

1

V

Output short-circuit detection threshold, supplement

VO(SC2)

mode

200

250

300

mV

VBAT – VOUT > VO(SC2) indicates short-circuit

tDGL(SC2)

Deglitch time, supplement mode short circuit

250

μs

tREC(SC2)

Recovery time, supplement mode short circuit

60

ms

BATTERY CHARGER

QUIESCENT CURRENT

VIN = 5V; ACinputcurrent[1,0]=11

60

80

μA

IIACSTDBY)

Standby current into AC pin

VIN = 28V; ACinputcurrent[1,0]=11

530

μA

VIN = 5V, no load on DCDC1, LDO1, SYS pin, VSYS[1,0]=11;

ICC

Active supply current, AC pin

2

mA

ACinputcurrent[1,0]=10; CH_EN=0

IBAT(SC)

Source current for BAT pin short-circuit detection

4

7.5

11

mA

VBAT(SC)

BAT pin short-circuit detection threshold

1.6

1.8

2.0

V

–1%

4.15

1%

–1%

4.175

1%

–1%

4.20

1%

–1%

4.225

1%

Depending on setting in CHGCONFIG3 And internal EEPROM

Vo(BATREG)

Battery charger voltage

V

Default = 4.2V

–1%

4.25

1%

–1%

4.275

1%

–1%

4.30

1%

–1%

4.325

1%

VLOWV

Pre-charge to fast-charge transition threshold

2.9

3.0

3.1

V

Deglitch time on pre-charge to fast-charge

tDGL1(LOWV)

25

ms

transition

Deglitch time on fast-charge to pre-charge

tDGL2(LOWV)

25

ms

transition

Maximum battery fast charge current

300

mA

VBAT(REG) > VBAT > VLOWV, VIN = VAC or VUSB = 5V

Minimum battery fast charge current

10

mA

ICHG

VBAT > VLOWV, VIN = 5V, IIN-MAX > ICHG, No load on SYS pin,

Battery fast charge current set factor

KISET/ RISET

A

thermal loop not active, DPPM loop not active

at 300mA for ICH_SCL[1,0]=11 (charge current scaling is

–15%

450

15%

100% of ISET value)

at 40mA for ICH_SCL[1,0]=11 (charge current scaling is 100%

–20%

450

20%

of ISET value)

at 225mA range for ICH_SCL[1,0]=10 (charge current scaling

–15%

338

15%

is 75% of ISET value)

at 30mA for ICH_SCL[1,0]=10 (charge current scaling is 75%

–20%

338

20%

of ISET value)

KISET

Fast charge current factor

A

Ω

at 150mA for ICH_SCL[1,0]=01 (charge current scaling is 50%

–10%

225

10%

of ISET value)

at 20mA for ICH_SCL[1,0]=01 (charge current scaling is 50%

–15%

225

15%

of ISET value)

at 75mA for ICH_SCL[1,0]=00 (charge current scaling is 25%

–10%

112

10%

of ISET value)

at 10mA for ICH_SCL[1,0]=00 (charge current scaling is 25%

–20%

112

20%

of ISET value)

for I_PRE[1,0]=11 (pre-charge current scaling is 20% of charge

0.15×ICHG

0.2×ICHG

0.25×ICHG

current)

for I_PRE[1,0]=10 (pre-charge current scaling is 15% of charge

0.11×ICHG

0.15×ICHG

0.19×ICHG

current)

IPRECHG

Pre-charge current

for I_PRE[1,0]=01 (pre-charge current scaling is 10% of charge

0.07×ICHG

0.1×ICHG

0.13×ICHG

current)

for I_PRE[1,0]=00 (pre-charge current scaling is 5% of charge

0.03×ICHG

0.05×ICHG

0.08×ICHG

current)

6

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