UCS1002-2 datasheet(19/114 Pages) MICROCHIP

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Programmable USB Port Power Controller with Charger Emulation

Datasheet

SMSC UCS1002

Revision 1.4 (07-16-13)

DATASHEET

Port Power Switch

Port Power Switch - DC Parameter

Over-voltage Lockout

VS_OV

On Resistance

RON_PSW

4.75 V < VS < 5.25 V

VS Leakage Current

ILEAK_VS

2.2

µA

Sleep state

into VS pin

Back-voltage Protection

Threshold

VBV_TH

150

VBUS > VS

VS > VS_UVLO

Back-drive Current

IBD_1

µA

VDD < VDD_TH,

Any powered power pin to any

unpowered power pin. Current

out of unpowered pin.

IBD_2

µA

VDD > VDD_TH,

Any powered power pin to any

unpowered power pin, except

for VDD to VBUS in Detect

power state and VS to VBUS in

Active power state. Current out

of unpowered pin.

Selectable Current Limits

ILIM1

480

500

ILIM Resistor =0or 47 k

(500 mA setting)

ILIM2

850

900

ILIM Resistor = 10k

Ωor56 kΩ

(900 mA setting)

ILIM3

950

1000

ILIM Resistor = 12k

Ωor68 kΩ

(1000 mA setting)

ILIM4

1130

1200

ILIM Resistor = 15k

Ωor82 kΩ

(1200 mA setting)

ILIM5

1400

1500

ILIM Resistor = 18k

Ωor100 kΩ

(1500 mA setting)

ILIM6

1720

1800

ILIM Resistor = 22k

Ωor120 kΩ

(1800 mA setting)

ILIM7

1910

2000

ILIM Resistor = 27k

Ωor150 kΩ

(2000 mA setting)

ILIM8

2370

2500

ILIM Resistor = 33k

Ωor VDD

(2500 mA setting)

Pin Wake Time

tPIN_WAKE

3ms

SMBus Wake Time

tSMB_WAKE

4ms

Idle Sleep Time

tIDLE_SLEEP

200

Table 3.3 Electrical Specifications (continued)

VDD = 4.5 V to 5.5 V, VS = 2.9 V to 5.5 V, VPULLUP = 3V to 5.5V, TA = -40 °C to 85 °C

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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