UCS81003 datasheet(11/108 Pages) MICROCHIP

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 2014 Microchip Technology Inc.

DS20005334A-page 11

UCS81003

Primary Removal

Detection Threshold

IREM_QUAL_ACT

—

700

—

µA

Programmable 100 – 900 µA,

default listed, Active Power state

—

800

—

µA

Programmable 200 – 1000 µA,

default listed, Detect power

state (see Section 8.4

“Removal Detection”).

Attach/Removal Detection - AC

Attach Detection Time

tDET_QUAL

—

100

—

Time from Attach to A_DET#

assert

Removal Detection Time

tREM_QUAL

—

1000

—

Allowed Charge Time

tDET_CHARGE

—800

—

CBUS = 500 µF maximum,

Programmable 200 – 2000 ms,

default listed.

Charger Emulation Profile

General Emulation - DC

Charging Current

Threshold

IBUS_CHG

—175.8

—

Default

Charging Current

Threshold Range

IBUS_CHG_RNG

11.72

—

175.8

Note 5

DP-DM Shunt Resistor

Value

RDCP_RES

—

200



Connected between DPOUT

and DMOUT,

0V < DPOUT = DMOUT < 3V

Response Magnitude

(voltage divider option

resistance range)

SX_RXMAG_DVDR

—

200



Note 5

Resistor Ratio Range

(voltage divider option)

SX_RATIO

0.25

—

0.66

V/V

Note 5

Resistor Ratio Accuracy

(voltage divider option)

SX_RATIO_ ACC

—

±0.5

—

Average over range

Response Magnitude

(resistor option range)

SX_RXMAG_RES

1.8

—

150



Note 5

Internal Resistor

Tolerance (resistor option)

SX_RXMAG_RES

_ACC

—

±10

—

Average over range

Response Magnitude

(voltage option range)

SX_RXMAG_VOLT

0.4

—

2.2

Note 5

Voltage Option Accuracy

SX_RXMAG_VOLT

_ACC

—

±1

—

No load,

average over range

Voltage Option Accuracy

SX_RXMAG_VOLT

_ACC_ 150

—

-6

—

150 µA load,

average over range

Voltage Option Accuracy

SX_RXMAG_VOLT

_ACC_ 250

—

-10

—

250 µA load,

average over range

TABLE 1-2:

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, VPULLUP = 3V to 5.5V,

TJ = -40°C to +125°C; all Typical values at VDD = VS = 5V, TJ = +27°C.

Characteristic

Sym.

Min.

Typ.

Max.

Unit

Conditions

Note 1:

For split supply systems using the Attach Detection feature, VS must not exceed VDD +150 mV.

This parameter is ensured by design and is not 100% tested.

This parameter is characterized, but not 100% production tested.

The current measurement full-scale range maximum value is 3.0A. However, the UCS81003 cannot report

values above ILIM (if IBUS_R2MIN  ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM 1.68A).

The Minimum and Maximum values represent the boundaries of a programmable range. Each value in the

range is typical.

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