Datasheet LTC3541-2 (Analog Devices) - 3

LTC3541-2
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 PARAMETER CONDITIONS MIN TYP MAX UNITS
IPK Peak Inductor Current VIN = 4.2V (Note 8) 0.8 0.95 1.25 A VIN Input Voltage Range (Note 4) l 2.7 5.5 V VIN(LINEREG) Buck VIN Line Regulation VIN = 2.7V to 5.5V, ENBUCK = VIN, l 0.04 0.4 %/V ENVLDO = 0V, MODE = VIN (Note 6) VLDO VIN Line Regulation VIN = 2.9V to 5.5V, LVOUT = 1.5V, ENBUCK = VIN, 2.2 mV/V (Referred to LVOUT) ENVLDO = VIN, MODE = 0V, IOUT(VLDO) = 100mA Linear Regulator VIN Line VIN = 2.9V to 5.5V, LVOUT = 1.5V, ENBUCK = 0V, 2.2 mV/V Regulation (Referred to LVOUT) ENVLDO = VIN, IOUT(LDO) = 10mA LVIN(LINEREG) LVIN Line Regulation LVIN = 1.6V to 5.5V, VIN = 5.5V, LVOUT = 1.5V, 0.8 mV/V (Referred to LVOUT) ENBUCK = VIN, ENVLDO = VIN, MODE = VIN, IOUT(VLDO) = 100mA VLDODO LVIN – LVOUT Dropout Voltage LVOUT = 1.5V, ENBUCK = VIN, ENVLDO = VIN, 20 50 mV MODE = VIN, IOUT(VLDO) = 50mA (Note 9) VLOADREG Buck Output Load Regulation ENBUCK = VIN, ENVLDO = 0V, MODE = VIN (Note 6) 0.5 % VLDO Output Load Regulation IOUT(VLDO) = 1mA – 300mA, LVIN = 1.875V, LVOUT = l 0.25 0.5 % 1.5V, ENBUCK = VIN, ENVLDO = VIN, MODE = VIN Linear Regulator Output Load IOUT(LDO) = 1mA – 30mA, LVOUT = 1.5V, l 0.25 0.5 % Regulation ENBUCK = 0V, ENVLDO = VIN VVOUT Reference Regulation Voltage ENBUCK = VIN, ENVLDO = 0V, TA = 25°C 1.837 1.875 1.913 V (Note 6) ENBUCK = VIN, ENVLDO = 0V, 0°C ≤ TA ≤ 85°C 1.833 1.875 1.917 V ENBUCK = VIN, ENVLDO = 0V, –40°C ≤ TA ≤ 85°C l 1.828 1.875 1.922 V VLVOUT Reference Regulation Voltage ENBUCK = 0V, ENVLDO = VIN, TA = 25°C 1.47 1.5 1.53 V (Note 7) ENBUCK = 0V, ENVLDO = VIN, 0°C ≤ TA ≤ 85°C 1.466 1.5 1.534 V ENBUCK = 0V, ENVLDO = VIN, –40°C ≤ TA ≤ 85°C l 1.462 1.5 1.538 V IS Buck + VLDO LVIN = 1.875V, LVOUT = 1.5V, ENBUCK = VIN, 85 μA Burst Mode Sleep ENVLDO = VIN, MODE = 0V, IOUT(VLDO) = 10μA, VIN Quiescent Current VVOUT = 2.11V Buck + VLDO LVIN = 1.875V, LVOUT = 1.5V, ENBUCK = VIN, 315 μA Burst Mode Active ENVLDO = VIN, MODE = 0V, IOUT(VLDO) = 10μA, VIN Quiescent Current VVOUT = 1.64V Buck + VLDO LVIN = 1.875V, LVOUT = 1.5V, ENBUCK = VIN, 300 μA Pulse-Skip Mode Active ENVLDO = VIN, MODE = VIN, IOUT(VLDO) = 10μA, VIN Quiescent Current VVOUT = 1.64V Buck VVOUT = 2.11V, IOUT(BUCK) = 0A, ENBUCK = VIN, 55 μA Burst Mode Sleep ENVLDO = 0V, MODE = 0V VIN Quiescent Current Buck VVOUT = 1.64V, IOUT(BUCK) = 0A, ENBUCK = VIN, 300 μA Burst Mode Active ENVLDO = 0V, MODE = 0V VIN Quiescent Current Buck VVOUT = 1.64V, IOUT(BUCK) = 0A, ENBUCK = VIN, 285 μA Pulse-Skip Mode Active ENVLDO = 0V, MODE = VIN VIN Quiescent Current Linear Regulator VIN Quiescent LVOUT = 1.5V, ENBUCK = 0V, ENVLDO = VIN, 50 μA Current IOUT(VLDO) = 10μA VIN Shutdown Quiescent ENBUCK = 0V, ENVLDO = 0V 2.5 μA Current LVIN Shutdown Quiescent LVIN = 3.6V, ENBUCK = 0V, ENVLDO = 0V 0.1 μA Current 35412fc For more information www.linear.com/LTC3541-2 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Operation Applications Information Package Description Revision History Related Parts