Datasheet LTC3617 (Analog Devices) - 4

LTC3617
typical perForMance characteristics TA = 25°C, VIN = 3.3V, fO = 1MHz unless otherwise noted. Efficiency vs Load Current Efficiency vs Input Voltage Efficiency vs Frequency
100 100 100 VOUT = 1.25V VOUT = 1.25V VOUT = 1.25V 90 95 90 80 90 70 80 60 85 50 70 80 40 EFFICIENCY (%) EFFICIENCY (%) 60 EFFICIENCY (%) 75 30 70 20 VIN = 2.5V 50 ILOAD = 600mA 150nH V I 10 IN = 3.3V LOAD = 2A 65 330nH V I IN = 5V OUT = 6A 470nH 0 40 60 0.1 1 10 2.25 2.75 3.25 3.75 4.25 4.75 5.25 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) INPUT VOLTAGE (V) FREQUENCY (MHz) 3617 G01 3617 G02 3617 G03
Load Regulation Line Regulation Output Voltage vs Time
0.3 0.3 VOUT = 1.25V 0.2 0.2 SW 2V/DIV 0.1 0.1 0 0 ERROR (%) ERROR (%) VOUT 20mV/DIV V OUT –0.1 V OUT –0.1 IL –0.2 –0.2 1A/DIV –0.3 –0.3 –6 –4 –2 0 2 4 6 2.20 2.75 3.30 3.85 4.40 4.95 5.50 2µs/DIV 3617 G06 VOUT = 1.25V LOAD CURRENT (A) INPUT VOLTAGE (V) ILOAD = 100mA 3617 G04 3617 G05
Load Step Transient Load Step Transient
VOUT VOUT 100mV/DIV 200mV/DIV I I L L 5A/DIV 4A/DIV 40µs/DIV 3617 G07 40µs/DIV 3617 G09 VOUT = 1.25V VOUT = 1.25V ILOAD = 100mA TO 6A ILOAD = –6A TO 6A COMPENSATION FIGURE 1 COMPENSATION FIGURE 1 3617fa 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts