UCS1001-3 datasheet(20/57 Pages) MICROCHIP

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USB Port Power Controller with Charger Emulation

Datasheet

Revision 1.4 (07-16-13)

SMSC UCS1001

DATASHEET

Port Power Switch Operation With Trip Mode Current Limiting

Region 2 Current Keep-

out

IBUS_R2MIN

0.1

Minimum VBUS Allowed

at Output

VBUS_MIN

2.0

Port Power Switch Operation With Constant Current Limiting (Variable Slope)

Region 2 Current Keep-

out

IBUS_R2MIN

1.5

Minimum VBUS Allowed

at Output

VBUS_MIN

2.0

VBUS Bypass - DC

On Resistance

RON_BYP

Leakage Current

ILEAK_BYP

µA

Switch off

Current Limit

IDET_CHG /

IBUS_BYP

VDD = 5 V and VBUS> 4.75 V

Attach / Removal Detection - DC

Attach Detection

Threshold

IDET_QUAL

800

µA

Primary Removal

Detection Threshold

IREM_QUAL_ACT

700

µA

Active power state

IREM_QUAL_DET

800

µA

Detect power state

(see Section 7.4)

Attach / Removal Detection - AC

Attach Detection Time

tDET_QUAL

100

Time from Attach to A_DET#

assert (UCS1001-4 only).

Removal Detection Time

tREM_QUAL

1000

Allowed Charge Time

tDET_CHARGE

800

CBUS = 500 µF max

Charger Emulation Profile

General Emulation - DC

Charging Current

Threshold

IBUS_CHG

156

Table 3.3 Electrical Specifications (continued)

VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, VPULLUP = 3V to 5.5V, = -40°C to

all Typical values at VDD = VS = 5 V, TA = 27 °C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNIT

CONDITIONS

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