Datasheet

LTC3219
3
3219fa
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 specifi cations
from 0°C to 85°C. Specifi cations over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi 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 CONDITIONS MIN TYP MAX UNITS
Gradation Period REG11, D1 and D2
●
●
●
0.325
0.65
1.30
0.45
0.9
1.8
s
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 1Ω
1.5x Mode Output Impedance V
BAT
= 3V, V
CPO
= 4.2V (Notes 5, 7) 5.2 Ω
2x Mode Output Impedance V
BAT
= 3V, V
CPO
= 4.8V (Notes 5, 7) 6.2 Ω
CPO Regulation Voltage 1.5x Mode, I
CPO
= 20mA
2x Mode, I
CPO
= 20mA
4.53
5.04
V
V
Clock Frequency
●
0.65 0.85 1.05 MHz
SDA, SCL, ENU
V
IL
●
0.3 • DV
CC
V
V
IH
●
0.7V • DV
CC
V
I
IH
SDA, SCL, ENU = DV
CC
●
–1 1 μA
I
IL
SDA, SCL, ENU = 0V
●
–1 1 μA
V
OL
, Digital Output Low (SDA) I
PULLUP
= 3mA
●
0.12 0.4 V
Serial Port Timing (Notes 6, 7)
t
SCL
Clock Operating Frequency 400 kHz
t
BUF
Bus Free Time Between Stop and Start Condition 1.3 μs
t
HD,STA
Hold Time After (Repeated) Start Condition 0.6 μs
t
SU,STA
Repeated Start Condition Setup Time 0.6 μs
t
SU,STO
Stop Condition Setup Time 0.6 μs
t
HD,DAT(OUT)
Data Hold Time 0 900 ns
t
HD,DAT(IN)
Input Data Hold Time 0 ns
t
SU,DAT
Data Setup Time 100 ns
t
LOW
Clock Low Period 1.3 μs
t
HIGH
Clock High Period 0.6 μs
t
f
Clock Data Fall Time 20 300 ns
t
r
Clock Data Rise Time 20 300 ns
t
SP
Spike Suppression Time 50 ns
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 specifi ed maximum operating junction
temperature may result in device degradation or failure.
Note 5: 1.5x mode output impedance is defi ned as (1.5V
BAT
– V
CPO
)/I
OUT
.
2x mode output impedance is defi 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.