Datasheet

LTC4311
3
4311fa
ELECTRICAL CHARACTERISTICS
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: All currents into pins are positive. All voltages are referenced to
GND unless otherwise specifi ed.
Note 3: Thermal characteristics are determined with exposed pad soldered
to GND plane. If the exposed pad is left open, thermal characteristics can
be drastically different.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Positive Supply Voltage
●
1.6 5.5 V
I
CC
Supply Current V
CC
= 5.5V, ENABLE = 5.5V, V
BUS1
= V
BUS2
= 0V
●
200 300 μA
I
CC_STANDBY
Supply Current, Standby Mode V
CC
= 5.5V, ENABLE = 5.5V, V
BUS1
= V
BUS2
= 5.5V
●
26 45 μA
I
CC_DISABLED
Supply Current, Disabled V
CC
= 5.5V, ENABLE = 0V, V
BUS1
= V
BUS2
= 5.5V
●
±5 μA
I
PULLUPAC
Transient Boosted Pull-up Current Positive Transition on Bus, Slew Rate = 0.5V/μs
V
CC
= 1.8V, BUS > V
THR
●
2.5 5 mA
I
BUS(IN)
BUS1,BUS2, Input Leakage Current V
CC
= 0V, V
BUS1
= V
BUS2
= 5.5V
●
±5 μA
I
ENABLE(IN)
ENABLE Input Leakage Current V
CC
= 0V, V
ENABLE
= 5.5V
●
±10 μA
V
THR
Bus Input Threshold Voltage V
CC
= 1.8V
●
0.45 0.55 0.65 V
V
CC
= 2.5V
●
0.65 0.75 0.85 V
V
CC
= 2.7V to 5.5V
●
0.68 0.78 0.88 V
V
THR_ENABLE
ENABLE Threshold Voltage V
CC
= 1.6V, 5.5V
●
0.4 1 1.5 V
SR
THRESH
Slew Rate Detector Threshold BUS > V
THR
, V
CC
= 1.8V, 5.5V
●
0.2 0.5 V/μs
t
r
Fast Mode I
2
C Bus Rise Time Bus Capacitance = 400pF, V
CC
= 3V (Note 4)
●
300 ns
f
MAX
Bus Maximum Operating Frequency (Note 5)
●
400 kHz
• The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 3.3V, unless otherwise noted.
Note 4: The rise time of an I
2
C bus line is calculated from V
IL(MAX)
to
V
IH(MIN)
or 0.9V to 2.1V (with V
CC
= 3V). This parameter is guaranteed by
design and not tested. With a minimum boosted pull-up current of 2.5mA:
Rise Time = (2.1V – 0.9V) • 400pF/2.5mA = 0.19μs.
Note 5: Determined by design, not tested in production.