LTC3205_15 Datasheet, PDF (4/16 Pages) Linear Technology – Multidisplay LED Controller

LTC3205
TYPICAL PERFOR A CE CHARACTERISTICS
1:1 Mode Switch Resistance
vs Temperature
1.0
I_CPO = 100mA
V_IN = 3.3V
0.9
V_IN = 3.6V
0.8
V_IN = 3.9V
0.7
0.6
–40
–15 10
35
60
85
TEMPERATURE (°C)
3205 G04
2:3 Mode CPO Voltage in
Current Limit
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5 ^VIN ^{= 4.2V}
0 ^{TA = 25°C}
0 100 200 300 400 500 600
LOAD CURRENT (mA)
3205 G13
V_IN Shutdown Current
vs Input Voltage
1.0
DV_CC = V_IN
0.8
T_A = 25°C
T_A = –40°C
0.6
T_A = 85°C
0.4
0.2
0
2.7 3.0 3.3 3.6 3.9 4.2 4.5
V_IN INPUT VOLTAGE (V)
3205 G09
4
2:3 Mode Charge Pump Open-
Loop Output Resistance vs
Temperature (3/2V_IN – V_CPO)/I_CPO
3.2
V_IN = 3V
V_CPO = 4.2V
3.0 C_IN = C_CPO = C_FLY1 = C_FLY2 = 1µF
2.8
2.6
2.4
2.2
2.0
–40
–15
10
35
60
85
TEMPERATURE (°C)
3205 G05
Oscillator Frequency
vs V_IN Voltage
1000
900
T_A = 25°C
T_A = –40°C
800
T_A = 85°C
700
600
2.7 3.0 3.3 3.6 3.9 4.2 4.5
V_IN VOLTAGE (V)
3205 G07
1:1 Mode No Load Supply Current
vs V_IN
90
T_A = 25°C
I_MS = I_RGB = 0µA
80
70
60
50
2.7
3 3.3 3.6 3.9 4.2 4.5
INPUT VOLTAGE (V)
3205 G12
2:3 Mode CPO Voltage
vs Load Current
4.8
T_A = 25°C
4.7
4.6
V_IN = 3.6V V_IN = 3.5V
4.5
4.4
4.3
V_IN = 3.1V
4.2
V_IN = 3.2V
4.1
V_IN = 3.3V
4.0
V_IN = 3.4V
3.9
V_IN = 3.0V
3.8
0
50
100 150 200 250
LOAD CURRENT (mA)
3205 G06
DV_CC Shutdown Current
vs DV_CC
0.5
V_IN = DV_CC
0.4
0.3
T_A = 25°C
T_A = –40°C
0.2
T_A = 85°C
0.1
0
2.7 3.0 3.3 3.6 3.9 4.2 4.5
DV_CC VOLTAGE (V)
3205 G08
2:3 Mode Supply Current
vs I_CPO (I_IN – 3/2I_CPO)
10
V_IN = 3.6V
9 T_A = 25°C
8
7
6
5
4
3
2
1
0
0
50
100
150
LOAD CURRRENT (mA)
200
3205 G10
3205f