Datasheet LTM4649 (Analog Devices) - 5

LTM4649
TYPICAL PERFORMANCE CHARACTERISTICS CCM, Burst Mode and Pulse- 12VIN Efficiency 5VIN Efficiency Skipping Mode Efficiency
100 100 100 VIN = 12V 90 V 95 95 OUT = 1.5V 80 90 90 70 60 85 85 50 80 80 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 75 VOUT = 1V, 450kHz 75 VOUT = 1V, 450kHz 30 CCM VOUT = 1.2V, 450kHz VOUT = 1.2V, 450kHz PULSE- V V 20 70 OUT = 1.5V, 450kHz OUT = 1.5V, 450kHz SKIPPPING V 70 OUT = 2.5V, 750kHz VOUT = 2.5V, 450kHz 10 Burst Mode VOUT = 3.3V, 750kHz VOUT = 3.3V, 450kHz OPERATION 65 65 0 0 2 4 6 8 10 0 2 4 6 8 10 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4649 G01 4649 G02 4649 G03
5VIN, 1VOUT Load Transient 12VIN, 1VOUT Load Transient 5VIN, 1.5VOUT Load Transient
IOUT IOUT IOUT 5A/DIV 5A/DIV 5A/DIV AC AC AC VOUT VOUT VOUT 100mV/DIV 100mV/DIV 100mV/DIV AC AC AC 50µs/DIV 4649 G04 50µs/DIV 4649 G05 50µs/DIV 4649 G06 5VIN, 1VOUT, 5A TO 10A LOAD STEP 12VIN, 1VOUT, 5A TO 10A LOAD STEP 5VIN, 1.5VOUT, 5A TO 10A LOAD STEP COUT = 2 • 220µF 4V CERAMIC CAPACITOR COUT = 2 • 220µF 4V CERAMIC CAPACITOR COUT = 2 • 220µF 4V CERAMIC CAPACITOR NO CFF CAPACITOR NO CFF CAPACITOR NO CFF CAPACITOR
12VIN, 1.5VOUT Load Transient 5VIN, 2.5VOUT Load Transient 12VIN, 2.5VOUT Load Transient
IOUT IOUT IOUT 5A/DIV 5A/DIV 5A/DIV AC AC AC VOUT VOUT VOUT 100mV/DIV 100mV/DIV 100mV/DIV AC AC AC 50µs/DIV 4649 G07 50µs/DIV 4649 G08 50µs/DIV 4649 G09 12VIN, 1.5VOUT, 5A TO 10A LOAD STEP 5VIN, 2.5VOUT, 5A TO 10A LOAD STEP 12VIN, 2.5VOUT, 5A TO 10A LOAD STEP, 750kHz COUT = 2 • 220µF 4V CERAMIC CAPACITOR COUT = 2 • 220µF 4V CERAMIC CAPACITOR COUT = 2 • 220µF 4V CERAMIC CAPACITOR NO CFF CAPACITOR NO CFF CAPACITOR NO CFF CAPACITOR 4649fc For more information www.linear.com/LTM4649 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Typical Application Design Resources Related Parts