LTC3207-1_15 Datasheet, PDF (3/20 Pages) Linear Technology – 600mA Universal Multi-Output LED/CAM Driver

LTC3207/LTC3207-1
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, CAMHL = LO, C1 = C2 = C3 = 2.2µF,
C4 = 4.7µF, unless otherwise noted.
PARAMETER
LED Current Matching
CONDITIONS
Any Two Outputs, 50% of FS
MIN
TYP MAX UNITS
2
%
LED Dropout Voltage
Blink Rate Period
ULED Up/Down Gradation Times
I_LED = FS
REG15, D6 and D7
REG15, D4 and D5
V_OL General Purpose Output Mode (GPO)
I_OUT = 1mA, Single Output Enabled
CAM LED Current, 4-Bit Linear DAC, CAM = 1V
180
mV
1.25
s
2.5
s
0.24
s
●
0.45
s
0.48
s
●
0.9
s
0.96
s
●
1.8
s
7
mV
Full-Scale LED Current
425
mA
Minimum (1LSB) LED Current
29
mA
LED Dropout Voltage
High Current Safety Timer
I_LED = FS
High Current Mode
450
mV
2.1
s
Charge Pump (CPO)
1x Mode Output Impedance
0.6
Ω
1.5x Mode Output Impedance
2x Mode Output Impedance
CPO Regulation Voltage
CLOCK Frequency
V_BAT = 3V, V_CPO = 4.2V (Note 5)
V_BAT = 3V, V_CPO = 4.8V (Note 5)
1.5x Mode, I_CPO = 20mA
2x Mode, I_CPO = 20mA
3.6
Ω
4.1
Ω
4.55
V
5.05
V
● 0.65
0.85 1.05
MHz
SDA, SCL, ENU, CAMHL
V_IL
V_IH
I_IH
I_IL
V_OL
Digital Output Low (SDA)
Serial Port Timing (Notes 6, 7)
SDA, SCL, ENU, CAMHL = DV_CC
SDA, SCL, ENU, CAMHL = 0V
I_PULLUP = 3mA
●
● 0.7 • 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
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
Output Data Hold Time
0
Input Data Hold Time
0
Data Setup Time
100
Clock Low Period
1.3
Clock High Period
0.6
400
kHz
µs
µs
µs
µs
900
ns
ns
ns
µs
µs
3207fc
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