LTC3219 Datasheet, PDF (3/20 Pages) Linear Technology – 250mA Universal Nine Channel LED Driver

LTC3219
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications 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
●
●
●
V_OL General Purpose Output Mode (GPO)
I_OUT = 1mA, Single Output Enabled
Charge Pump (CPO)
0.325
s
0.45
s
0.65
s
0.9
s
1.30
s
1.8
s
10
mV
1x Mode Output Impedance
1
Ω
1.5x Mode Output Impedance
2x Mode Output Impedance
CPO Regulation Voltage
Clock Frequency
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
Ω
6.2
Ω
4.53
V
5.04
V
● 0.65
0.85
1.05
MHz
SDA, SCL, ENU
V_IL
V_IH
I_IH
I_IL
V_OL, Digital Output Low (SDA)
Serial Port Timing (Notes 6, 7)
SDA, SCL, ENU = DV_CC
SDA, SCL, ENU = 0V
I_PULLUP = 3mA
●
● 0.7V • DV_CC
●
–1
0.3 • DV_CC
V
V
1
μA
●
–1
1
μA
●
0.12
0.4
V
t_SCL
t_BUF
t_HD,STA
t_SU,STA
t_SU,STO
t_HD,DAT(OUT)
t_HD,DAT(IN)
t_SU,DAT
t_LOW
t_HIGH
t_f
t_r
t_SP
Clock Operating Frequency
Bus Free Time Between Stop and Start Condition
1.3
Hold Time After (Repeated) Start Condition
0.6
Repeated Start Condition Setup Time
0.6
Stop Condition Setup Time
0.6
Data Hold Time
0
Input Data Hold Time
0
Data Setup Time
100
Clock Low Period
1.3
Clock High Period
0.6
Clock Data Fall Time
20
Clock Data Rise Time
20
Spike Suppression Time
50
400
kHz
μs
μs
μs
μs
900
ns
ns
ns
μs
μs
300
ns
300
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 specifications
from 0°C to 85°C. Specifications 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 specified maximum operating junction
temperature may result in device degradation or failure.
Note 5: 1.5x mode output impedance is defined as (1.5V_BAT – V_CPO)/I_OUT.
2x mode output impedance is defined 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
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