bq30z554-R1

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SLUSBD4 – OCTOBER 2013

ELECTRICAL CHARACTERISTICS: SCD1 Current Protection (continued)

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

3.8 V to 25 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

t(DETECT)

Current fault detect time

VSRP-SRN = VTHRESH + 12.5 mV

160

µs

Overcurrent and Short Circuit

tACC

Accuracy of typical delay time

–20

20

%

delay time accuracy

ELECTRICAL CHARACTERISTICS: SCD2 Current Protection

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

3.8 V to 25 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RSNS = 0

100

450

mV

SCD2 detection threshold voltage

V(SDC2)

range, typical

RSNS = 1

50

225

mV

RSNS = 0

50

mV

SCD2 detection threshold voltage

ΔV(SCD2T)

program step

RSNS = 1

25

mV

V(OFFSET)

SCD2 offset

–10

10

mV

V(Scale_Err)

SCD2 scale error

–10

10

%

AFE.STATE_CNTL[SCDDx2] = 0

0

458

µs

t(SCD1D)

Short Circuit in Discharge Delay

AFE.STATE_CNTL[SCDDx2] = 1

0

915

µs

AFE.STATE_CNTL[SCDDx2] = 0

30.5

µs

t(SCD2D_STEP)

SCD2D Step options

AFE.STATE_CNTL[SCDDx2] = 1

61

µs

VSRP – SRN = VTHRESH +

t(DETECT)

Current fault detect time

160

µs

12.5 mV

Overcurrent and Short Circuit

tACC

Accuracy of typical delay time

–20

20

%

delay time accuracy

ELECTRICAL CHARACTERISTICS: SCC Current Protection

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

3.8 V to 25 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RSNS = 0

–100

–300

mV

SCC detection threshold voltage

V(SCCT)

range, typical

RSNS = 1

–50

–225

mV

RSNS = 0

–50

mV

SCC detection threshold voltage

ΔV(SCCDT)

program step

RSNS = 1

–25

mV

V(OFFSET)

SCC offset

–10

10

mV

V(Scale_Err)

SCC scale error

–10

10

%

t(SCCD)

Short Circuit in Charge Delay

0

915

ms

t(SCCD_STEP)

SCCD Step options

61

ms

VSRP – SRN = VTHRESH +

t(DETECT)

Current fault detect time

160

µs

12.5 mV

Overcurrent and Short Circuit

tACC

Accuracy of typical delay time

–20

20

%

delay time accuracy

ELECTRICAL CHARACTERISTICS: SBS Timing Characteristics

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

3.8 V to 25 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SLAVE mode, SMBC 50% duty

fSMB

SMBus operating frequency

10

100

kHz

cycle

MASTER mode, no clock low slave

fMAS

SMBus master clock frequency

51.2

kHz

extend

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