LTC3210-2 Datasheet, PDF (4/16 Pages) Linear Technology – MAIN/CAM LED Controllers with 32-Step Brightness Control in 3mm × 3mm QFN

LTC3210-2/LTC3210-3
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise stated.
Dropout Time from Shutdown
CPO
5.1V
1V/DIV
EN
2V/DIV
MODE
RESET
2X
1.5X
1X
Dropout Time When Enabled
CPO
5.1V
1V/DIV
ENC
2V/DIV
MODE
RESET
2X
1.5X
1X
1.5x CPO Ripple
V_CPO
50mV/DIV
AC
COUPLED
V_BAT = 3.6V
I_CPO = 200mA
C_CPO = 2.2μF
500μs/DIV
321023 G01
ENM = HIGH
250μs/DIV
321023 G02
500ns/DIV
321023 G03
2x CPO Ripple
V_BAT = 3.6V
I_CPO = 200mA
C_CPO = 2.2μF
V_CPO
20mV/DIV
AC
COUPLED
500ns/DIV
321023 G04
1.5x Mode CPO Voltage
vs Load Current
4.8
C2 = C3 = C4 = 2.2μF
4.6
V_BAT = 3.3V
V_BAT = 3.4V
4.4
V_BAT = 3.5V
4.2
V_BAT = 3.6V
4.0
V_BAT = 3.2V
3.8 _{VBAT = 3.1V}
V_BAT = 3V
3.6
0 100 200 300 400 500
LOAD CURRENT (mA)
321023 G07
1x Mode Switch Resistance
vs Temperature
0.70 _{ICPO = 200mA}
0.65
0.60
V_BAT = 3.3V
0.55
0.50
V_BAT = 3.9V
0.45
V_BAT = 3.6V
0.40
–40
–15
10
35
60
85
TEMPERATURE (°C)
321023 G05
2x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(2V_BAT – V_CPO)/I_CPO
4.6
V_BAT = 3V
4.4
V_CPO = 4.8V
C2 = C3 = C4 = 2.2μF
4.2
4.0
3.8
3.6
3.4
3.2
–40
–15 10
35
60
85
TEMPERATURE (°C)
321023 G08
1.5x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(1.5V_BAT – V_CPO)/I_CPO
3.8
V_BAT = 3V
3.6
V_CPO = 4.2V
C2 = C3 = C4 = 2.2μF
3.4
3.2
3.0
2.8
2.6
2.4
–40
–15 10
35
60
85
TEMPERATURE (°C)
321023 G06
2x Mode CPO Voltage
vs Load Current
5.2
C2 = C3 = C4 = 2.2μF
5.1
5.0
V_BAT = 3.6V
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
0
V_BAT = 3.5V
V_BAT = 3.4V
V_BAT = 3.3V
V_BAT = 3.2V
V_BAT = 3.1V
V_BAT = 3V
100 200 300 400 500
LOAD CURRENT (mA)
321023 G09
321023fa
4