UCS81003 datasheet(4/108 Pages) MICROCHIP

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UCS81003

DS20005334A-page 4

 2014 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

Voltage on VDD, VS and VBUS pins ....................................................................................................................-0.3 to 6V

Pull-Up Voltage (VPULLUP) ................................................................................................................... -0.3 to VDD + 0.3V

Data Switch Current (IHSW_ON), Switch On...........................................................................................................±50 mA

Port Power Switch Current ..................................................................................................................... Internally limited

Data Switch Pin Voltage To Ground (DPOUT, DPIN, DMOUT, DMIN); (VDD powered or unpowered)....... -0.3 to VDD +0.3V

Differential Voltage Across Open Data Switch (DPOUT -DPIN, DMOUT - DMIN, DPIN - DPOUT, DMIN - DMOUT) .............VDD

Voltage on any Other Pin to Ground ................................................................................................... -0.3 to VDD + 0.3V

Current on any Other Pin ...................................................................................................................................... ±10 mA

Package Power Dissipation ............................................................................................................................... Table 1-1

Maximum Junction Temperature Under Bias ........................................................................................................ +125°C

Storage Temperature Range ................................................................................................................... -55°C to +150°C

† Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at those or any other conditions above those indicated in the

operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may

affect device reliability.

TABLE 1-1:

POWER DISSIPATION SUMMARY

Board

Package



De-rating

Factor Above

+25°C

TA <+25°C

Power

Rating

TA <+70°C

Power

Rating

TA <+85°C

Power

Rating

High K

(see Note 1)

28-pin VQFN

5x 5 mm

4°C/W

32°C/W

31.3 mW°/C

2470 mW

1220 mW

800 mW

Low K

(see Note 1)

28-pin VQFN

5x 5 mm

4°C/W

51°C/W

19.6 mW°/C

1620 mW

800 mW

530 mW

Note 1:

Junction to ambient (



JA) is dependent on the design of the thermal vias. Without thermal vias and a ther-

mal landing, the



JA is approximately 77°C/W, including localized PCB temperature increase. This JA

value is an estimate for a JEDEC® compliant 2S2P PCB with thermal vias.

TABLE 1-2:

ELECTRICAL CHARACTERISTICS

Electrical Characteristics: Unless otherwise specified, VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, VPULLUP = 3V to 5.5V,

TJ = -40°C to +125°C; all Typical values at VDD = VS = 5V, TJ = +27°C.

Characteristic

Sym.

Min.

Typ.

Max.

Unit

Conditions

Power Supply

Supply Voltage

VDD

4.5

5.5

Note 1

Source Voltage

2.9

5.5

Note 1

Supply Current in Active

(IDD_ACTIVE + IVS_ACT)

IACTIVE

—

650

750

µA

Average current IBUS =0mA,

TJ <+85°C

Note 1:

For split supply systems using the Attach Detection feature, VS must not exceed VDD +150 mV.

This parameter is ensured by design and is not 100% tested.

This parameter is characterized, but not 100% production tested.

The current measurement full-scale range maximum value is 3.0A. However, the UCS81003 cannot report

values above ILIM (if IBUS_R2MIN  ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM 1.68A).

The Minimum and Maximum values represent the boundaries of a programmable range. Each value in the

range is typical.

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