UCS81003 datasheet(5/108 Pages) MICROCHIP

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 2014 Microchip Technology Inc.

DS20005334A-page 5

UCS81003

Supply Current in Sleep

(IDD_SLEEP + IVS_SLEEP)

ISLEEP

—

µA

Average current

VPULLUP  VDD, TJ <+85°C

Supply Current in Detect

(IDD_DETECT + IVS_DETECT)

IDETECT

—

175

—

µA

Average current,

no portable device attached

Power-On Reset

VS Low Threshold

VS_UVLO

—2.5

—

VS voltage increasing

VS Low Hysteresis

VS_UVLO_HYST

—100

—

VS voltage decreasing

VDD Low Threshold

VDD_TH

—4

—

VDD voltage increasing

VDD Low Hysteresis

VDD_TH_HYST

—500

—

VDD voltage decreasing

I/O Pins - SMCLK, SMDATA, EM_EN, M1, M2, PWR_EN, S0, LATCH, ALERT#, A_DET# – DC Parameters

Output Low Voltage

VOL

——

0.4

ISINK_IO = 8 mA

SMDATA, ALERT#, A_DET#

Input High Voltage

VIH

2.1

—

PWR_EN, EM_EN, M1, M2,

LATCH, S0, SMDATA, SMCLK

Input Low Voltage

VIL

—

0.8

PWR_EN, EM_EN, M1, M2,

LATCH, S0, SMDATA, SMCLK

Leakage Current

ILEAK

—

±5

µA

Powered or unpowered,

VPULLUP  VDD, TJ <+85°C

Interrupt Pins - AC Parameters

ALERT#, A_DET# Pin

Blanking Time

tBLANK

—25

—

ALERT# Pin

Interrupt Masking Time

tMASK

—5

—

SMBus/I2C™ Timing

Input Capacitance

CIN

—5

—

Clock Frequency

fSMB

—

400

kHz

Spike Suppression

tSP

—50

Note 2

Bus Free Time Stop to Start

tBUF

1.3

—

µs

Start Setup Time

tSU:STA

0.6

—

µs

Start Hold Time

tHD:STA

0.6

—

µs

Stop Setup Time

tSU:STO

0.6

—

µs

Data Hold Time

tHD:DAT

—

µs

When transmitting to the master

Data Hold Time

tHD:DAT

0.3

—

µs

When receiving from the master

Data Setup Time

tSU:DAT

0.6

—

µs

Clock Low Period

tLOW

1.3

—

µs

Clock High Period

tHIGH

0.6

—

µs

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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