UCS1003-2 datasheet(12/138 Pages) MICROCHIP

12 / 138 page

UCS1003-1/2/3

DS20005346B-page 12

 2014-2015 Microchip Technology Inc.

Charge Rationing (UCS1003-1 only) - DC

Accumulated Current

Measurement Accuracy

—±4.5

—

Charge Rationing (UCS1003-1 only) – AC

Current Measurement

Update Time

tPCYCLE

—1

—

Attach/Removal Detection

VBUS Bypass – DC

On Resistance

RON_BYP

—50

—



Leakage Current

ILEAK_BYP

—

µA

Switch off (Note 2)

Current Limit

IDET_CHG /

IBUS_BYP

—2

—

VDD = 5V and VBUS > 4.75V

Attach/Removal Detection – DC

Attach Detection Threshold

IDET_QUAL

—

800

—

µA

Programmable (UCS1003-1

only)

200-1000 µA, default

listed

Primary Removal Detection

Threshold

IREM_QUAL_ACT

—

700

—

µA

Programmable (UCS1003-1

only)

100-900 µA, default listed,

Active power state

IREM_QUAL_DET

—

800

—

µA

Programmable (UCS1003-1

only)

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 (UCS1003-1 and

UCS1003-3 only)

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

—

46.9

—

Default value for UCS1003-1

—175.8

—

UCS1003-2

and UCS1003-3

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.

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 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 UCS1003-1 cannot report

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

The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

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