Datasheet LTC3103 (Analog Devices) - 4

LTC3103
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted Application No-Load Input Current Efficiency vs Input Voltage vs Supply Voltage (Automatic Efficiency vs Output Current (Automatic Burst Mode Operation) Burst Mode Operation)
100 100 2.2 VOUT = 3.3V V FRONT PAGE APPLICATION 95 OUT = 2.2V L = 15µH 95 L = 10µH 90 2.1 90 85 85 2.0 80 80 75 75 1.9 70 70 EFFICIENCY (%) EFFICIENCY (%) 65 1.8 65 ILOAD = 300mA INPUT CURRENT (µA) V 60 IN = 4V ILOAD = 100mA V 60 IN = 7V ILOAD = 10mA 1.7 55 VIN = 10V 55 ILOAD = 1mA VIN = 15V ILOAD = 100µA 50 50 1.6 0.0001 0.001 0.01 0.1 1 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 18 OUTPUT CURRENT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3103 G01 3103 G02 3103 G03
Application No-Load Input Current Efficiency vs Output Current Efficiency vs Input Voltage vs Supply Voltage (Forced (Forced Continuous Operation) (Forced Continuous Operation) Continuous Operation)
100 100 3.5 VOUT = 3.3V VOUT = 3.3V, L = 10µH 90 L = 10µH 90 3.0 80 80 I 70 LOAD = 300mA 70 I 2.5 LOAD = 100mA 60 60 ILOAD = 10mA ILOAD = 1mA 2.0 50 50 40 40 1.5 EFFICIENCY (%) EFFICIENCY (%) 30 VIN = 3.7V 30 INPUT CURRENT (mA) 1.0 V 20 IN = 5V V 20 IN = 7V 0.5 10 VIN = 10V 10 VIN = 15V FRONT PAGE APPLICATION 0 0 0 0.0001 0.001 0.01 0.1 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 OUTPUT CURRENT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3103 G04 3103 G05 3103 G06
Feedback Voltage Oscillator Frequency vs Temperature vs Temperature RDS(ON) vs Temperature
0.75 10 50 NORMALIZED TO 25°C NORMALIZED TO 25°C NORMALIZED TO 25°C 8 40 VIN = 10V 0.50 6 30 4 (%) SYNCHRONOUS 20 FB 0.25 2 RECTIFIER MAIN SWITCH 0 10 0 –2 0 CHANGE IN V –4 FREQUENCY CHANGE (%) –10 –0.25 –6 CHANGE IN RESISTANCE (%) –8 –20 –0.50 –10 –30 –60 –40 –20 0 20 40 60 80 100 120 140 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3103 G07 3103 G08 3103 G09 3103fa 4 For more information www.linear.com/LTC3103 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts