UCS1002-2 datasheet(24/114 Pages) MICROCHIP

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Programmable USB Port Power Controller with Charger Emulation

Datasheet

Revision 1.4 (07-16-13)

SMSC UCS1002

DATASHEET

Note 3.2

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

150 mV.

Note 3.3

The current measurement full scale range maximum value is 2.5 A. However, the

UCS1002 cannot report values above ILIM (if IBUS_R2MIN < ILIM) or above IBUS_R2MIN (if

IBUS_R2MIN > ILIM and ILIM < 1.5 A).

Pull-down Current

Accuracy

SX_PUPD

_ACC_3p6

±5

DPOUT or DMOUT = 3.6 V

Compliance voltage

Pull-down Current

SX_PUPD

_ACC_BC

µA

Setting = 100 µA

DPOUT or DMOUT = 0.15 V

Compliance voltage

Stimulus Voltage

Threshold Range

SX_TH

0.3

2.2

Programmable, all typical

Stimulus Voltage

Accuracy

SX_TH_ ACC

±2

Average over range

Stimulus Voltage

Accuracy

SX_TH_ACC_

0.25

At SX_TH = 0.3 V

Stimulus Voltage

Hysteresis

SX_TH_HYST

Voltage falling

General Emulation - AC

Emulation Reset Time

tEM_RESET

Emulation Reset Time

Range

tEM_RESET_

RNG

175

Programmable, all typical

Emulation Timeout

Range

tEM_ TIMEOUT

0.8

12.8

Programmable, 0.8 s to 12.8 s,

all typical

Stimulus Delay, SX_TD

Range

tSTIM_DEL

100

Programmable, all typical

Emulation Delay

tRES_EM

0.5

Time from set impedance to

impedance appears on DP /

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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