LTC3208 Datasheet, PDF (4/24 Pages) Linear Technology – High Current Software Confi gurable Multidisplay LED Controller

LTC3208
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, ENRGBS = Hi, R_REF = 24k, C2 = C3 = 2.2µF,
C1 = C4 = 4.7µF, unless otherwise noted.
PARAMETERS
CONDITIONS
MIN TYP MAX UNITS
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
Repeated Start Condition Setup Time
Stop Condition Setup Time
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
0.6
µs
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: Absolute Maximum Ratings are those values beyond which the
MTBF of a device may be impaired.
Note 2: Based on long-term current density limitations. Assumes an
operating duty cycle of ≤10% under absolute maximum conditions for
durations less than 10 seconds. Max charge pump current for continuous
operation is 500mA.
Note 3: Based on long-term current density limitations.
Note 4: The LTC3208E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C ambient
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
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.
TYPICAL PERFOR A CE CHARACTERISTICS
Mode Switch Dropout Times
5V
1x
2x
1.5x
V_CPO
1V/DIV
1.5x Mode CPO Ripple
V_CPO
20mV/DIV
AC COUPLED
T_A = 25°C
V_BAT = 3.6V
I_CPO = 400mA
C_CPO = 4.7µF
T_A = 25°C
V_BAT = 3.6V
250µs/DIV
3208 G01
500ns/DIV
2x Mode CPO Ripple
V_CPO
20mV/DIV
AC COUPLED
3208 G02
T_A = 25°C
V_BAT = 3.6V
I_CPO = 400mA
C_CPO = 4.7µF
500ns/DIV
3208 G03
3208fa
4