Datasheet LTM4650 (Analog Devices) - 6

LTM4650
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Output Current, Efficiency vs Output Current, VIN = 5V VIN = 12V
95 95 90 90 85 85 80 80 EFFICIENCY (%) 75 EFFICIENCY (%) 0.8V 75 OUT, 400kHz 0.8VOUT, 400kHz 1.0VOUT, 500kHz 1.0VOUT, 500kHz 70 1.2VOUT, 500kHz 70 1.2VOUT, 500kHz 1.5VOUT, 600kHz 1.5VOUT, 600kHz 1.8VOUT, 600kHz 1.8VOUT, 600kHz 65 65 0 5 10 15 20 25 0 5 10 15 20 25 LOAD CURRENT (A) LOAD CURRENT (A) 4650 G01 4650 G02
Dual Phase Single Output Efficiency Burst Mode and Pulse-Skip Mode vs Output Current, VIN = 12V, Efficiency VIN=12V, VOUT = 1.2V, fS = 500kHz fS = 500kHz
95 100 CCM 90 Burst Mode OPERATION 90 PULSE-SKIP MODE 80 70 85 60 80 50 40 EFFICIENCY (%) EFFICIENCY (%) 75 0.8VOUT, 400kHz 30 1.0VOUT, 500kHz 1.2V 20 70 OUT, 500kHz 1.5VOUT, 600kHz 10 1.8VOUT, 600kHz 65 0 0 10 20 30 40 50 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) 4650 G03 4650 G04
1V Dual Phase Single Output 1.2V Dual Phase Single Output Load Transient Response Load Transient Response
V V OUT(AC) OUT(AC) 20mV/DIV 20mV/DIV LOAD LOAD STEP STEP 10A/DIV 10A/DIV 4650 G05 50µs/DIV 50µs/DIV 4650 G06 12VIN, 1VOUT, 500kHz, 12.5A LOAD STEP, 12VIN, 1.2VOUT, 500kHz, 12.5A LOAD STEP, 10A/µs STEP-UP AND STEP-DOWN 10A/µs STEP-UP AND STEP-DOWN COUT = 8× 220µF CERAMIC COUT = 8× 220µF CERAMIC CFF = 470pF CFF = 470pF Rev. C 6 For more information www.analog.com Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photo Design Resources Related Parts