Datasheet LTC3636, LTC3636-1 (Analog Devices) - 5

LTC3636/LTC3636-1
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, VIN1 = VIN2 = 12V, fSW = 1MHz, L = 0.55µH unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Forced Continuous Mode Burst Mode Operation Operation Efficiency vs Load Current
100 100 100 VOUT = 1.8V V Burst Mode OPERATION 90 OUT = 1.8V 97 90 80 94 80 70 91 70 FORCED 60 88 60 CONTINUOUS MODE 50 85 50 40 82 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 79 L = 1µH 30 VIN = 4V V V 20 IN = 4V OUT = 5V V 76 20 IN = 8V VIN = 8V VOUT = 3.3V V 10 IN = 12V V 73 IN = 12V V 10 OUT = 5V VIN = 20V VIN = 20V VOUT = 3.3V 0 70 0 0.001 0.01 0.1 1 10 0 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6.0 0.001 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3636 G01 3636 G02 3636 G03
Efficiency vs Load Current Efficiency vs Input Voltage Reference Voltage Burst Mode Operation Burst Mode Operation vs Temperature
100 100 0.606 VOUT = 1.2V VOUT = 1.8V 90 95 0.604 80 90 70 85 0.602 60 80 TAGE (V) 50 75 0.600 40 70 EFFICIENCY (%) EFFICIENCY (%) 0.598 30 VIN = 4V 65 VIN= 8V ILOAD = 10mA REFERENCE VOL 20 60 VIN = 12V ILOAD = 100mA 0.596 V 10 IN = 15V I 55 LOAD = 1A VIN = 20V ILOAD = 6A 0 50 0.594 0.001 0.01 0.1 1 10 4 6 8 10 12 14 16 18 20 –50 –25 0 25 50 75 100 125 LOAD CURRENT (A) INPUT VOLTAGE (V) TEMPERATURE (°C) 3636 G04 3636 G05 3636 G06
Oscillator Frequency Oscillator Internal Set Frequency Load Regulation vs Temperature vs Temperature
1.6 10 2.4 VOUT = 1.8V RT = 324k RT = INTVCC 8 2.2 1.2 6 4 2.0 (%) 0.8 TION (%) 2 OUT ARIA /V 0 1.8 OUT 0.4 –2 ∆V 1.6 –4 FREQUENCY (MHz) 0 FREQUENCY V –6 1.4 Burst Mode OPERATION –8 FORCED CONTINUOUS –0.4 –10 1.2 0 1 2 3 4 5 6 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 ILOAD (A) TEMPERATURE (°C) TEMPERATURE (°C) 237820 G07 3636 G08 3636 G09 Rev. C For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts