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LTC3208 Datasheet, PDF (3/24 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 TA = 25°C. VBAT = 3.6V, DVCC = 3V, ENRGBS = Hi, RREF = 24k, C2 = C3 = 2.2µF,
C1 = C4 = 4.7µF, unless otherwise noted.
PARAMETERS
CONDITIONS
White LED Current (CAM1-4), 4-Bit Linear DAC
Full-Scale LED Current
CAM = 1V
Minimum (1LSB) LED Current
CAM = 1V
LED Current Matching
Any Two CAM Outputs, 50% FS
LED Dropout Voltage
ILED = FS
White LED Current (AUX1-4, AUX Outputs Assigned to AUX DAC), 4-Bit Linear DAC
Full-Scale LED Current
AUX = 1V
Minimum (1LSB) LED Current
AUX = 1V
LED Current Matching
Two AUX Outputs, 50% FS
LED Dropout Voltage
Full-Scale AUX LED Current
Full-Scale AUX LED Current
ILED = FS
AUX Connected to CAM DAC, AUX = 1V
AUX Connected to SUB or MAIN DAC, AUX = 1V
RGB LED Current (RED, GREEN, BLUE), 4-Bit Exponential DAC
DAC Code 0001
RED, GREEN, BLUE = 1V
DAC Code 0010
RED, GREEN, BLUE = 1V
DAC Code 0011
RED, GREEN, BLUE = 1V
DAC Code 0100
RED, GREEN, BLUE = 1V
DAC Code 0101
RED, GREEN, BLUE = 1V
DAC Code 0110
RED, GREEN, BLUE = 1V
DAC Code 0111
RED, GREEN, BLUE = 1V
DAC Code 1000
RED, GREEN, BLUE = 1V
DAC Code 1001
RED, GREEN, BLUE = 1V
DAC Code 1010
RED, GREEN, BLUE = 1V
DAC Code 1011
RED, GREEN, BLUE = 1V
DAC Code 1100
RED, GREEN, BLUE = 1V
DAC Code 1101
RED, GREEN, BLUE = 1V
DAC Code 1110
RED, GREEN, BLUE = 1V
DAC Code 1111
RED, GREEN, BLUE = 1V
Charge Pump (CPO)
1x Mode Output Impedance
1.5x Mode Output Impedance
2x Mode Output Impedance
CPO Voltage Regulation
CLOCK Frequency
VBAT = 3V, VCPO = 4.2V (Note 5)
VBAT = 3V, VCPO = 4.8V (Note 5)
1.5x Mode, ICPO = 2mA
2x Mode, ICPO = 2mA
SDA, SCL, ENRGBS, CAMHL
VIL, (Low Level Input Voltage)
VIH, (High Level Input Voltage)
VOL, Digital Output Low (SDA)
IIH
IIL
Serial Port Timing (Notes 6, 7)
IPULLUP = 3mA
SDA, SCL, ENRGBS, CAMHL = DVCC
SDA, SCL, ENRGBS, CAMHL = 0V
tSCL
tBUF
tHD,STA
Clock Operating Frequency
Bus Free Time Between Stop and Start Condition
Hold Time After (Repeated) Start Condition
MIN TYP MAX UNITS
● 92.5 102.5 112.5
mA
6.96
mA
1
%
540
mV
●
23
26
28.5
mA
1.73
mA
1
%
140
mV
104.9
mA
28.1
mA
0.24
mA
0.32
mA
0.46
mA
0.63
mA
0.89
mA
1.22
mA
1.74
mA
2.42
mA
3.47
mA
4.73
mA
6.7
mA
9.47
mA
13.56
mA
19.05
mA
27.06
mA
0.35
2
2.2
4.53
V
5.02
V
●
0.6
0.9
1.2
MHz
●
0.3 • DVCC
V
● 0.7 • DVCC
V
●
0.18
0.4
V
●
–1
1
µA
●
–1
1
µA
400
kHz
1.3
µs
0.6
µs
3208fa
3
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