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LTC3219
ELECTRICAL CHARACTERISTICS The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V BAT = 3.6V, DV CC = 3V, ENU = Hi, C1/C4 = 2.2μF, C2, C3 = 1μF, unless
otherwise noted.
PARAMETER
Gradation Period
CONDITIONS
REG11, D1 and D2
MIN
TYP
0.325
MAX
UNITS
s
●
●
●
0.65
1.30
0.45
0.9
1.8
s
s
s
s
s
V OL General Purpose Output Mode (GPO)
I OUT = 1mA, Single Output Enabled
10
mV
Charge Pump (CPO)
1x Mode Output Impedance
1
Ω
1.5x Mode Output Impedance
2x Mode Output Impedance
CPO Regulation Voltage
V BAT = 3V, V CPO = 4.2V (Notes 5, 7)
V BAT = 3V, V CPO = 4.8V (Notes 5, 7)
1.5x Mode, I CPO = 20mA
2x Mode, I CPO = 20mA
5.2
6.2
4.53
5.04
Ω
Ω
V
V
Clock Frequency
●
0.65
0.85
1.05
MHz
SDA, SCL, ENU
V IL
V IH
●
●
0.7V ? DV CC
0.3 ? DV CC
V
V
I IH
I IL
V OL , Digital Output Low (SDA)
SDA, SCL, ENU = DV CC
SDA, SCL, ENU = 0V
I PULLUP = 3mA
●
●
●
–1
–1
0.12
1
1
0.4
μA
μA
V
Serial Port Timing (Notes 6, 7)
t SCL
t BUF
t HD,STA
t SU,STA
t SU,STO
Clock Operating Frequency
Bus Free Time Between Stop and Start Condition
Hold Time After (Repeated) Start Condition
Repeated Start Condition Setup Time
Stop Condition Setup Time
1.3
0.6
0.6
0.6
400
kHz
μs
μs
μs
μs
t HD,DAT(OUT)
t HD,DAT(IN)
t SU,DAT
t LOW
t HIGH
t f
t r
t SP
Data Hold Time
Input Data Hold Time
Data Setup Time
Clock Low Period
Clock High Period
Clock Data Fall Time
Clock Data Rise Time
Spike Suppression Time
0
0
100
1.3
0.6
20
20
50
900
300
300
ns
ns
ns
μs
μs
ns
ns
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: Based on long-term current density limitations.
Note 3: The LTC3219 is guaranteed to meet performance speci?cations
from 0°C to 85°C. Speci?cations over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speci?ed maximum operating junction
temperature may result in device degradation or failure.
Note 5: 1.5x mode output impedance is de?ned as (1.5V BAT – V CPO )/I OUT .
2x mode output impedance is de?ned as (2V BAT – V CPO )/I OUT .
Note 6: All values are referenced to V IH and V IL levels.
Note 7: Guaranteed by design.
3219fa
3
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