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LTC4155

4155fc

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating

junction temperature range, otherwise specifications are at TA ≈ TJ = 25°C (Note 2). VBUS = 5V, BATSNS = 3.7V, DVCC = 3.3V,

RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IIL,SDA,SCL

Input Leakage Low

SDA, SCL = 0V

–1

μA

VOL

Digital Output Low (SDA)

ISDA = 3mA

0.4

fSCL

Clock 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 Set-Up

Time

0.6

μs

tSU_STO

STOP Condition Time

0.6

μs

tHD_DAT(OUT)

Data Hold Time

900

tHD_DAT(IN)

Input Data Hold Time

tSU_DAT

Data Set-Up Time

100

tLOW

Clock LOW Period

1.3

μs

tHIGH

Clock HIGH Period

0.6

μs

Clock Data Fall Time

300

Clock Data Rise Time

300

tSP

Spike Suppression Time

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 LTC4155E is tested under pulsed load conditions such that

TJ ≈ TA. The LTC4155E is guaranteed to meet performance specifications

from 0°C to 85°C junction temperature. Specifications over the

–40°C to 125°C operating junction temperature range are assured by

design, characterization and correlation with statistical process controls.

The LTC4155I is guaranteed over the full –40°C to 125°C operating

junction temperature range. The junction temperature (TJ, in °C) is

calculated from the ambient temperature (TA, in °C) and power dissipation

(PD, in watts) according to the formula:

TJ = TA + (PD • θJA), where the package thermal impedance

θJA = 43°C/W)

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 resistance and

other environmental factors.

Note 3. VMAX is the maximum of VBUS or BATSNS

Note 4. Total input current is IVBUSQ + VCLPROG/RCLPROG • (hCLPROG + 1).

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