TPS65721 datasheet(2/50 Pages) TI

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TPS65720

TPS65721

SLVS979 – OCTOBER 2009

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION

PACKAGE

PART NUMBER (1)

SIZE FOR WCSP VERSION

PACKAGE CODE

PACKAGE

MARKING

-40°C TO 85°C

TPS65720

D = 2105

μm ±25 μm

YFF

WCSP

TPS65720

E = 2105

μm ±25 μm

-40°C TO 85°C

TPS65721

RSN

QFN(1)

65720

(1)

The RSN and YFF package is available in tape and reel. Add R suffix (TPS65720YFFR; TPS65721RSNR) to order quantities of 3000

parts per reel. Add T suffix (TPS65720YFFT; TPS65721RSNT) to order quantities of 250 parts per reel.

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

VALUE / UNIT

Input voltage range on all pins except A/PGND, AC, GPIOx pins with respect to AGND

–0.3 to 7 V

Input voltage range on GPIOx pins with respect to AGND

–0.3 to VSYS

Input voltage range on AC pin with respect to AGND

–0.3 to 28 V

Voltage range on pin VLDO1, FB_LDO1, TS_OUT, TS with respect to AGND

–0.3 to 3.6 V

Current at AC, BAT, SYS, L1, VLDO1, VINLDO1, PGND

600 mA

Current at GPIOx, AGND

20 mA

Current at all other pins

3 mA

Continuous total power dissipation

See dissipation rating table

Operating free-air temperature, TA

–40°C to 85°C

Maximum junction temperature, TJ

125°C

Storage temperature, TST

–65°C to 150°C

DISSIPATION RATINGS

(1)

PACKAGE

RθJA

TA ≤ 25°C

DERATING FACTOR

TA = 70°C

TA = 85°C

POWER RATING

ABOVE TA = 25°C

POWER RATING

YFF

55 K/W

1.8 W

18 mW/K

1 W

0.7 W

RSN

38 K/W

2.6 W

26 mW/K

1.4 W

1 W

(1)

The thermal resistance was measured on a high K board.

RECOMMENDED OPERATING CONDITIONS

MIN

NOM

MAX

UNIT

VAC

Input voltage range at AC pin

4.35

VSYS

Voltage range at SYS pin

2.2

5.6

IINUSB

Input current at AC

500

IOUTSYS

Output current at SYS

400

IBAT

Average current into / out of BAT pin

300

VINDCDC1

Input voltage range for step-down converter DCDC1

2.3

5.6

VDCDC1

Output voltage range for DCDC1 step-down converter; externally adjustable

0.6

VINDCDC1

IOUTDCDC1

Output current at L

400

Inductor at L (1)

2.2

3.3

4.7

μH

VINLDO1

Input voltage range for LDO1

1.8

VSYS

VLDO1

Output voltage range for LDO1

0.8

3.3

ILDO1

Output current at LDO1

200

(1)

See application section for more details

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