UCS1002-1 datasheet(113/116 Pages) MICROCHIP

113 / 116 page

Programmable USB Port Power Controller with Charger Emulation

Datasheet

SMSC UCS1002

113

Revision 1.4 (07-16-13)

DATASHEET

Chapter 2, Pin Description



Changed “unused connection” to n/a for COMM_SEL / ILIM,

SEL, SMDATA / LATCH, and SMCLK / S0 pins as they must

be used.



Added Note 2.1: Total leakage current from pins 3 and 4

(VBUS) to ground must be less than 100 µA for proper attach

/ removal detection operation.



Added Note 2.2: It is recommended to use 2 M

Ω pull-down

resistors on the DPOUT and / or DMOUT pin if a portable

device stimulus is expected when using the Custom charger

emulation profile with the high-speed data switch open. The

2 M

Ω value is based on BC1.1 impedance characteristics for

Dedicated Charging Ports.

Table 3.3, "Electrical

Specifications"



IDET_QUAL changed from 200 µA to 400 µA.



IREM_QUAL_DET changed from 200 µA to 400 µA.



IREM_QUAL_ACT changed from 100 µA to 300 µA.



Updated selectable current limits (ILIMx) min and max values.

Typical values did not change.



Changed IACTIVE from 500 µA (TYP) to 650 µA (TYP).



Changed IACTIVE from TBD µA (MAX) to 750 µA (MAX).



Changed ISLEEP from TBD µA (MAX) to 8 µA (MAX).



Changed IDETECT from 190 µA (TYP) to 185 µA (TYP).



Changed IDETECT from TBD µA (MAX) to 220 µA (MAX).



Removed VS_OV MIN value (5.6 V) and MAX value (TBD).



Changed RON_PSW from 70 mΩ (MAX) to 65 mΩ (MAX).



Changed ILEAK_VS from TBD µA (MAX) to 5 µA (MAX).



Changed ILEAK_BYP from 0.5 µA (MAX) to 3 µA (MAX).



Changed IBD_1 from 2 µA (MAX) to 3 µA (MAX).

Section 4.1, "Operating

Mode"



Added. Moved Table 4.1, "UCS1002 Communication Mode

and ILIM Selection" here (it was in Section 4.3, "Stand-alone

Operating Mode").

Table 5.1, "Power States

Control Settings"



“Behavior” cell in the "Sleep" row: Clarified behavior by

adding "VBUS will be near ground potential”.

Section 5.1.2, "Sleep State

Operation"



Clarified behavior by adding "VBUS will be near ground

potential”.

Section 5.2.3, "Back-voltage

Detection" and Section

5.2.4, "Back-drive Current

Protection"



Section “Back-voltage / Back-drive Detection” split into two.



In Section 5.2.4, "Back-drive Current Protection", corrected

reference IBD_LK to match elec spec symbol IBD_1 and

rewrote back-drive description.

Section 7.2.4, "Current

Limiting Modes"



Added: The current limiting mode used depends on the Active

state mode (see Section 9.9, "Current Limit Mode

Associations").

Section 7.2.4.1, "Trip Mode"



Added application note: To avoid cycling in trip mode, set ILIM

higher than the highest expected portable device current

draw.

Table 14.1 Customer Revision History (continued)

REVISION

LEVEL & DATE

SECTION/FIGURE/ENTRY

CORRECTION

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