UCS1001 datasheet(57/59 Pages) MICROCHIP

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USB Port Power Controller with Charger Emulation

Datasheet

SMSC UCS1001

Revision 1.2 (05-21-12)

DATASHEET

Chapter 11 Document Revision History

Table 11.1 Customer Revision History

REVISION

LEVEL & DATE

SECTION/FIGURE/ENTRY

CORRECTION

Revision 1.2

(05-21-12)

Cover



Certification added: “

UL recognized and EN/IEC 60950-1

(CB) certified”

Revision 1.2

(05-16-12)

Cover



Source voltage: Vs MIN moved from 2.7 to 2.9 V to

accomodate UL

Table 3.3, "Electrical

Specifications"



Source voltage: Vs MIN moved from 2.7 to 2.9 V to

accomodate UL

Revision 1.2

(03-16-12)

Cover



There are nine preloaded charger emulation profiles.

Chapter 2, Pin Description



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

and 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.

Table 3.3, "Electrical

Specifications"



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 m (MAX) to 65 m (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).

Table 4.1, "Power States

Control Settings"



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

adding "VBUS will be near ground potential”.

Section 4.1.2, "Sleep State

Operation"



Clarified behavior by adding "VBUS will be near ground

potential”.

Section 4.2.3, "Back-voltage

Detection" and Section

4.2.4, "Back-drive Current

Protection"



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



In Section 4.2.4, "Back-drive Current Protection", corrected

reference IBD_LK to match elec spec symbol IBD_1 and

rewrote back-drive description.

Section 6.2.4, "Current

Limiting Modes"



Added: The current limiting mode used depends on the Active

state mode (see Section 8.9, "Current Limit Mode

Associations").

Section 6.2.4.1, "Trip Mode"



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

higher than the highest expected portable device current

draw.

Table 8.2, "Current Limit

Mode Options"



Rearranged rows so DCE Cycle is grouped together.



Added row for DCE Cycle when a charger emulation profile is

being applied.

UCS1001 Datasheet(PDF) 57 Page - Microchip Technology

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