UCS1002-3 datasheet(5/114 Pages) MICROCHIP

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DS20006852A-page 5

UCS1002-3

Supply Current in Detect

(IDD_DETECT + IVS_DETECT)

IDETECT

—

185

220

µA

Average current,

no portable device attached

Power-On Reset

VS Low Threshold

VS_UVLO

—

2.5

2.7

VS voltage increasing

VS Low Hysteresis

VS_UVLO_HYST

—100

—

VS voltage decreasing

VDD Low Threshold

VDD_TH

—

4.4

VDD voltage increasing

VDD Low Hysteresis

VDD_TH_HYST

—

500

—

VDD voltage decreasing

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

Output Low Voltage

VOL

——

0.4

ISINK_IO = 8 mA

SMDATA, ALERT#, A_DET#

Input High Voltage

VIH

2.0

—

PWR_EN, EM_EN, M1, M2,

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, TA < +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

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 Host

Data Hold Time

tHD:DAT

0.3

—

µs

When receiving from the Host

Data Setup Time

tSU:DAT

0.6

—

µs

Clock Low Period

tLOW

1.3

—

µs

Clock High Period

tHIGH

0.6

—

µs

Clock/Data Fall Time

tFALL

——

300

Min = 20 + 0.1 CLOAD ns

Clock/Data Rise Time

tRISE

——

300

Min = 20 + 0.1 CLOAD ns

Capacitive Load

CLOAD

—

400

Per bus line

Timeout

tTIMEOUT

—

Disabled by default

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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