LTC3220_15 Datasheet, PDF (5/20 Pages) Linear Technology – 360mA Universal 18-Channel LED Driver

LTC3220/LTC3220-1
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise noted.
1x Mode Switch Resistance
vs Temperature
0.80
0.75
0.70
V_IN = 3.3V
0.65
0.60
V_IN = 3.6V
0.55
V_IN = 3.9V
0.50
0.45
0.40
0.35
0.30
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3220 G04
2x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
4.9
4.7
4.5
4.3
4.1
3.9
3.7
3.5
3.3
3.1
2.9
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3220 G07
V_IN Shutdown Current
vs V_IN Voltage
7.5
6.5
T_A = 125°C
T_A = 85°C
5.5
T_A = 25°C
4.5
T_A = –40°C
3.5
2.5
1.5
2.9
3.55
4.2
4.85
VOLTAGE (V)
5.5
3220 G10
1.5x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
4.5
4.3
4.1
3.9
3.5
3.3
3.1
2.9
2.7
2.5
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3220 G05
2x Mode CPO Voltage vs I_CPO
5.2
5.1
3.3V-3.6V
5.0
4.9
3.2V
4.8
3.1V
3V
4.7
4.6
4.5
4.4
4.3
4.2
0
60 120 180 240 300 360
I_CPO (mA)
3220 G08
DV_CC Current vs DV_CC Voltage
3.0 _{RST = SDA = DVCC}
2.5
2.0
f_SCL = 400kHz
1.5
f_SCL = 100kHz
1.0
0.5
0
1.5
f_SCL = 10kHz
2.5
3.5
4.5
DV_CC VOLTAGE (V)
5.5
3220 G11
1.5x Mode CPO Voltage vs I_CPO
4.8
4.6
3.6V _3.5V
4.4
4.2
3V
3.1V
4.0
3.2V
3.3V
3.4V
3.8
3.6
0
60 120 180 240 300 360
I_CPO (mA)
3220 G06
Oscillator Frequency
vs V_IN Voltage
810
800
T_A = 25°C
790
780
T_A = –45°C
770
760
T_A = 125°C
T_A = 85°C
750
740
730
2.9
3.55
4.2
4.85
V_IN VOLTAGE (V)
5.5
3220 G09
1x Mode No Load V_IN Current
vs V_IN Voltage
610
605
600
595
590
585
580
2.9
3.55
4.2
4.85
V_IN VOLTAGE (V)
5.5
3220 G12
32201fc
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