LTC4156
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 = 3.3V, DVCC = 3.3V,
RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX
UNITS
tHD_SDA
Hold Time After (Repeated) START
Condition
0.6
µs
tSU_SDA
Repeated START Condition Set-Up
Time
0.6
µs
tSU_STO
tHD_DAT(OUT)
tHD_DAT(IN)
tSU_DAT
tLOW
tHIGH
tf
tr
tSP
STOP Condition Time
Data Hold Time
Input Data Hold Time
Data Set-Up Time
Clock LOW Period
Clock HIGH Period
Clock Data Fall Time
Clock Data Rise Time
Spike Suppression Time
0.6
µs
0
900
ns
0
ns
100
ns
1.3
µs
0.6
µs
20
300
ns
20
300
ns
50
ns
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 LTC4156E is tested under pulsed load conditions such that
TJ ≈ TA. The LTC4156E 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 LTC4156I 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).
4156f
8