LTC3220-1_15 Datasheet, PDF (4/20 Pages) Linear Technology – 360mA Universal 18-Channel LED Driver

LTC3220/LTC3220-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V, DV_CC = 3V, RST = high, C1 = C2 = C3 = 2.2μF, C4 = 4.7μF,
unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
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 Supression Time
0
900
ns
0
ns
100
ns
1.3
μs
0.6
μs
20
300
ns
20
300
ns
50
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 LTC3220E/LTC3220E-1 are 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. The LTC3220I/LTC3220I-1
are guaranteed to meet performance specifications over the full –40°C to
125°C operating temperature range.
Note 4: These devices include overtemperature protection that is intended
to protect the devices during momentary overload conditions. Junction
temperatures 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_IN – V_CPO)/I_OUT.
2x mode output impedance is defined as (2V_IN – V_CPO)/I_OUT.
Note 6: All values are referenced to V_IH and V_IL levels.
Note 7: Guaranteed by design.
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise noted.
Mode Switch Dropout Times
1.5x Mode CPO Ripple
2x Mode CPO Ripple
1s
V_CPO
1V/DIV
2s
1.5s
V_CPO
20mV/DIV
AC COUPLED
V_CPO
20mV/DIV
AC COUPLED
V_IN = 3.6V
250μs/DIV
3220 G01
V_IN = 3.6V
I_CPO = 200mA
C_CPO = 4.7μF
500ns/DIV
3220 G02
V_IN = 3.6V
I_CPO = 200mA
C_CPO = 4.7μF
500ns/DIV
3220 G03
32201fc
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