LTC3541 データシートの表示（PDF） - Linear Technology
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LTC3541 Datasheet PDF : 22 Pages
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LTC3541
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V unless otherwise specified (Note 2)
SYMBOL
IPK
PARAMETER
Peak Inductor Current
CONDITIONS
VIN = 4.2V (Note 8)
MIN
TYP MAX
0.8
0.95 1.25
IBUCKFB
BUCKFB Pin Input Current
VBUCKFB = 0.9V
l
±50
ILFB
VIN
VIN(LINEREG)
LFB Pin Input Current
Input Voltage Range
Buck VIN Line Regulation
LVIN(LINEREG)
VLDO VIN Line Regulation
(Referred to LFB)
Linear Regulator VIN Line
Regulation (Referred to LFB)
LVIN Line Regulation
(Referred to LFB)
VLDODO
VLOADREG
LVIN – LVOUT Dropout Voltage
(Note 9)
Buck Output Load Regulation
VLDO Output Load Regulation
Linear Regulator Output Load
VBUCKFB
Reference Regulation Voltage
(Note 6)
VLFB = 0.45V
(Note 4)
VIN = 2.7V to 5.5V, ENBUCK = VIN,
ENVLDO = 0V, MODE = VIN (Note 6)
VIN = 2.7V to 5.5V, LVOUT = 1.2V, ENBUCK = VIN,
ENVLDO = VIN, IOUT(VLDO) = 100mA, LVIN = 1.5V
VIN = 2.7V to 5.5V, LVOUT = 1.2V, ENBUCK = 0V,
ENVLDO = VIN, IOUT(LREG) = 10mA
LVIN = 0.9V to 5.5V, VIN = 5.5V, LVOUT = 0.4V,
ENBUCK = VIN, ENVLDO = VIN, MODE = VIN,
IOUT(VLDO) = 100mA
LVIN = 1.5V, ENBUCK = VIN, ENVLDO = VIN,
MODE = VIN, IOUT(VLDO) = 50mA, VLFB = 0.3V
ENBUCK = VIN, ENVLDO = 0V, MODE = VIN (Note 6)
IOUT(VLDO) = 1mA – 300mA, LVIN = 1.5V, LVOUT =
1.2V, ENBUCK = VIN, ENVLDO = VIN, MODE = VIN
IOUT(LREG) = 1mA – 30mA, LVOUT = 1.2V,
ENBUCK = 0V, ENVLDO = VIN
ENBUCK = VIN, ENVLDO = 0V, TA = 25°C
ENBUCK = VIN, ENVLDO = 0V, 0°C ≤ TA ≤ 85°C
l –200
l 2.7
l
l
l
0.784
0.782
–40
5.5
0.04
0.4
0.6
0.6
0.3
28
60
0.5
0.25
0.5
0.25
0.5
0.8 0.816
0.8 0.818
ENBUCK = VIN, ENVLDO = 0V, –40°C ≤ TA ≤ 85°C
l 0.78
0.8
0.82
VLFB
Reference Regulation Voltage
ENBUCK = 0V, ENVLDO = VIN, TA = 25°C
(Note 7)
ENBUCK = 0V, ENVLDO = VIN, 0°C ≤ TA ≤ 85°C
0.392
0.391
0.4 0.408
0.4 0.409
ENBUCK = 0V, ENVLDO = VIN, –40°C ≤ TA ≤ 85°C
l 0.390
0.4 0.410
IS
Buck + VLDO
LVIN = 1.5V, LVOUT = 1.2V, ENBUCK = VIN,
85
Burst Mode Sleep
ENVLDO = VIN, MODE = 0V, IOUT(VLDO) = 10μA,
VIN Quiescent Current
VBUCKFB = 0.9V
Buck + VLDO
LVIN = 1.5V, LVOUT = 1.2V, ENBUCK = VIN,
315
Burst Mode Active
ENVLDO = VIN, MODE = 0V, IOUT(VLDO) = 10μA,
VIN Quiescent Current
VBUCKFB = 0.7V
Buck + VLDO
LVIN = 1.5V, LVOUT = 1.2V, ENBUCK = VIN,
300
Pulse-Skip Mode Active
ENVLDO = VIN, MODE = VIN, IOUT(VLDO) = 10μA,
VIN Quiescent Current
VBUCKFB = 0.7V
Buck
VBUCKFB = 0.9V, IOUT(BUCK) = 0A, ENBUCK = VIN,
55
Burst Mode Sleep
ENVLDO = 0V, MODE = 0V
VIN Quiescent Current
Buck
VBUCKFB = 0.7V, IOUT(BUCK) = 0A, ENBUCK = VIN,
300
Burst Mode Active
ENVLDO = 0V, MODE = 0V
VIN Quiscent Current
Buck
VBUCKFB = 0.7V, IOUT(BUCK) = 0A, ENBUCK = VIN,
285
Pulse-Skip Mode Active
ENVLDO = 0V, MODE = VIN
VIN Quiescent Current
Linear Regulator VIN Quiescent LVOUT = 1.2V, ENBUCK = 0V, ENVLDO = VIN,
50
Current
IOUT(LREG) = 10μA
VIN Shutdown Quiescent Current ENBUCK = 0V, ENVLDO = 0V
2.5
LVIN Shutdown Quiescent Current LVIN = 3.6V, ENBUCK = 0V, ENVLDO = 0V
0.1
UNITS
A
nA
nA
V
%/V
mV/V
mV/V
mV/V
mV
%
%
%
V
V
V
V
V
V
μA
μA
μA
μA
μA
μA
μA
μA
μA
For more information www.linear.com/LTC3541
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