UCS1002-3 datasheet(10/114 Pages) MICROCHIP

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UCS1002-3

DS20006852A-page 10

 2023 Microchip Technology Inc. and its subsidiaries

Current Measurement Update

Time

tPCYCLE

—1

—

Attach/Removal Detection

VBUS Bypass – DC Parameters

On Resistance

RON_BYP

—50

—



Leakage Current

ILEAK_BYP

—

µA

Switch off

Current Limit

IDET_CHG/

IBUS_BYP

—

VDD = 5V and VBUS > 4.75V

Attach/Removal Detection – DC Parameters

Attach Detection Threshold

IDET_QUAL

—

1000

—

µA

Programmable 200-1000 µA,

default listed.

Primary Removal Detection

Threshold

IREM_QUAL

_ACT

—

900

—

µA

Programmable 100-900 µA,

default listed, Active power state

IREM_QUAL

_DET

—

1000

—

µA

Programmable 200-1000 µA,

default listed, Detect power

state (see Section 8.4

“Removal Detection”).

Attach/Removal Detection – AC Parameters

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 Parameters

Charging Current Threshold

IBUS_CHG

—

9.76

—

Default

Charging Current

Threshold Range

IBUS_

CHG_RNG

9.76

—

155

Programmable, all typical.

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



Programmable, all mins.

Resistor Ratio Range

(voltage divider option)

SX_RATIO

0.25

—

0.66

V/V

Programmable, all typical.

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



Programmable, all typical.

Internal Resistor Tolerance

(resistor option)

SX_RXMAG_

RES_ACC

—

±10

—

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,

TA = -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

Parameter

Sym.

Min.

Typ.

Max.

Unit

Conditions

Note 1: For split supply systems using the Attach Detection feature, VS must not exceed VDD + 150 mV.

2: The current measurement full-scale range maximum value is 2.5A. However, the UCS1002-3 cannot

report values above ILIM (if IBUS_R2MIN  ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM 1.5A).

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