LTC7150S datasheet(4/24 Pages) LINER

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LTC7106

Rev A

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PMBus INTERFACE TIMING CHARACTERISTICS The

denotes the specifications which

apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2), VDD = 3.3V, unless

otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fSCL

Serial Bus Operating Frequency

400

kHz

tBUF

Bus Free Time Between Stop and Start Condition

1.3

µs

tHD_SDA

Hold Time After (Repeated) Start Condition

0.6

µs

tSU_SDA

Repeated Start Condition Setup Time

0.6

µs

tSU_STO

Stop Condition Setup Time

0.6

µs

tHD_DAT(OUT)

Data Hold Time

300

900

tHD_DAT(IN)

Input Data Hold Time

tSU_DAT

Data Setup Time

100

tLOW

Clock Low Period

1.3

10000

µs

tHIGH

Clock High Period

0.6

µs

tTIMEOUT_SMB

Stuck PMBus Timer

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC7106 is tested under pulsed load conditions such that

TJ ≈ TA. The LTC7106E is guaranteed to meet performance specifications

from 0°C to 85°C. Specifications over the –40°C to 125°C operating

junction temperature range are assured by design, characterization and

correlation with statistical process controls. The LTC7106I is guaranteed

over the –40°C to 125°C operating junction temperature range. High

junction temperatures degrade operating lifetimes; operating lifetime

is derated for junction temperatures greater than 125°C. Note that the

maximum ambient temperature consistent with these specifications is

determined by specific operating conditions in conjunction with board

layout, the rated package thermal impedance and other environmental

factors. TJ is calculated from the ambient temperature TA and power

dissipation PD according to the following formula:

TJ = TA + (PD • 55°C/W).

Note 3: IDAC is a bidirectional current DAC, controlled by 2’s complementary

logic. Under the setting of Range = Normal, IDAC = 63µA for Code = 0111111

provides the maximum source current and IDAC = –64µA for Code = 1000000

provides the maximum sink current. Max sink current generates the Highest

VOUT, while Max source current generates the lowest VOUT. See the Operation

section for more details.

TYPICAL PERFORMANCE CHARACTERISTICS

Quiescent Current vs Temperature

IDAC Leakage Current vs

Temperature

PIDAC Full-Scale vs Temperature

TA = 25°C, VDD = 3.3V, VIDAC = 1.0V,

Range = Normal unless otherwise noted.

VEN = 0, OR VID[6:0] = 0

TEMPERATURE (°C)

–50

–5

130

–1

IDAC Leakage Current vs. Temp

7106 G02

TEMPERATURE (°C)

–50

–10

110

150

62.500

62.600

62.700

62.800

62.900

63.000

63.100

63.200

63.300

63.400

63.500

PIDAC Full Scale VS. Temperature

7106 G03

VID[6:0] = 0111111

IRANGE = NOMINAL

TEMP (°C)

–50

–10

110

150

500

550

600

650

700

750

800

850

900

950

1000

7106 G01

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