LTC3210 Datasheet, PDF (4/16 Pages) Linear Technology – MAIN/CAM LED Controller in 3mm × 3mm QFN

LTC3210
TYPICAL PERFOR A CE CHARACTERISTICS T_A = 25°C unless otherwise stated.
Dropout Time from Shutdown
CPO
1V/DIV
EN
2V/DIV
MODE
RESET
2X
1.5X
1X
Dropout Time When Enabled
CPO
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
3210 G01
ENM = HIGH
250µs/DIV
3210 G02
500ns/DIV
3210 G03
2x CPO Ripple
V_BAT = 3.6V
I_CPO = 200mA
C_CPO = 2.2µF
V_CPO
20mV/DIV
AC
COUPLED
500ns/DIV
3210 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 _{VBAT = 3.2V}
3.8 _{VBAT = 3.1V}
V_BAT = 3V
3.6
0 100 200 300 400 500
LOAD CURRENT (mA)
3210 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
TEMPERATURE (°C)
85
3210 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)
3210 G08
4
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
TEMPERATURE (˚C)
85
3210 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)
3210 G09
3210f