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LTC3230
ELECTRICAL CHARACTERISTICS The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 3.6V, C1 = C2 = C4 = C5 = C6 = 1μF, R SET = 17.4k, ENM = ENS =
high, ENLDO1 = ENLDO2 = low, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CPO Short Circuit Detection
Threshold Voltage
●
0.4
1.3
V
Charge Pump (CPO)
1x Mode Output Voltage
1.5x Mode Output Voltage
2x Mode Output Voltage
1x Mode Output Impedance
1.5x Mode Output Impedance
2x Mode Output Impedance
Clock Frequency
Mode Switching Delay
I CPO = 0mA
I CPO = 0mA
I CPO = 0mA
V IN = 3.4V, V CPO = 4.6V (Note 6)
V IN = 3.4V, V CPO = 5.1V (Note 6)
V IN
4.5
5.0
1.6
7.9
9.2
0.9
0.5
V
V
V
Ω
Ω
Ω
MHz
ms
t EN
Current Source Enable Time (ENM, ENS = High)
●
250
μs
(Note 7)
LDO1, LDO2
Bias per 1 LDO
Additional DC Bias per LDO
ENM = ENS = Low
125
60
μA
μA
Output Voltage Accuracy
I OUT = 100μA
●
–3
3
%
Current Limit
Line Regulation
Load Regulation
Dropout Voltage
V LDO = 1.8V, I OUT = 50mA
V IN = 3.6V, 100μA < I LDO < 200mA
LDO2, V LDO = 3.3V, V IN – V LDO at V LDO 3% Down
●
280
475
0.1
0.65
250
750
mA
%/V
%
mV
from V LDO Measureed at V IN = 4.3V
V1, V2
V IL
V IH
●
●
V IN – 0.2
0.2
V
V
Shutdown Input Current
Active Input Current
ENLDO1 = ENLDO2 = Low
ENLDO1 = ENLDO2 = High
–1
–3
1
3
μA
μA
ENM, ENS, ENLDO1, ENLDO2
V IL
V IH
I IH
V IH = 3.6V
●
●
1.4
3
0.4
V
V
μA
I IL
V IL = 0V
●
–1
1
μA
ENM, ENS Timing
t PWH
High Pulse Width
●
0.2
μs
t PWL
Low Pulse Width
0.2
20
μs
t SD
Low Time to Shutdown (ENM, ENS = Low)
●
250
μs
R SET
V RSET
I RSET
●
●
768
800
832
70
mV
μA
3230fa
3
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