Datasheet LTC3626 (Analog Devices) - 5

LTC3626
Typical perForMance characTerisTics TA = 25°C, PVIN = SVIN = 12V, f = 1MHz unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current (Forced Efficiency vs Load Current (Burst Mode Operation) Continuous Mode Operation) (Burst and Forced Continuous)
100 100 100 VOUT = 1.8V VOUT = 1.8V Burst Mode OPERATION 90 90 90 80 80 80 70 70 70 60 60 60 FORCED CONTINUOUS 50 50 50 MODE OPERATION 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 V V 20 IN = 4V IN = 4V V 20 20 IN = 8V VIN = 8V 10 VIN = 12V 10 VIN = 12V 10 VOUT = 5V VIN = 20V VIN = 20V VOUT = 3.3V 0 0 0 1 10 100 1000 10000 1 10 100 1000 10000 1 10 100 1000 10000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3626 G01 3626 G02 3626 G02
Efficiency vs Input Voltage Efficiency vs Frequency (Forced Reference Voltage (Burst Mode Operation) Continuous Mode Operation) vs Temperature
100 100 0.606 VOUT = 1.8V VOUT = 3.3V 95 90 0.604 80 90 70 0.602 85 60 80 50 (V) 0.600 V FB 40 EFFICIENCY (%) 75 EFFICIENCY (%) 30 0.598 70 ILOAD = 1A f = 500kHz I 20 LOAD = 2.5A f = 1MHz 0.596 65 ILOAD = 100mA 10 f = 2MHz ILOAD = 10mA f = 3MHz 60 0 0.594 4 6 8 10 12 14 16 18 20 22 1 10 100 1000 10000 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) LOAD CURRENT (mA) TEMPERATURE (°C) 3626 G04 3626 G05 3626 G06
Internal MOSFET RDS(ON) Temperature Monitor vs Temperature vs Temperature
160 125 2.0 TEMPERATURE MONITOR VOLTAGE (V) 140 100 1.9 TOP SWITCH 120 75 1.7 100 (mΩ) 50 1.6 80 BOTTOM SWITCH 25 1.5 R DS(ON) 60 0 1.4 40 MEASURED TEMPERATURE (°C) 20 –25 1.2 0 –50 1.1 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3626 G07 3626 G08 3626fa For more information www.linear.com/LTC3626 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts