Datasheet LTM4602HV (Analog Devices) - 4

LTM4602HV
W U TYPICAL PERFOR A CE CHARACTERISTICS (See Figure 22 for all curves) Effi ciency vs Load Current Effi ciency vs Load Current Effi ciency vs Load Current with 5VIN (FCB = 0) with 12VIN (FCB = 0) with 24VIN (FCB = 0)
100 100 90 90 90 80 80 80 70 70 70 60 60 60 0.8VOUT 50 50 1.2V 50 OUT 1.5V 0.8V 40 40 OUT 40 OUT EFFICIENCY (%) 1.8VOUT EFFICIENCY (%) 1.2VOUT EFFICIENCY (%) 1.2V 30 OUT 30 2.5VOUT 30 1.5VOUT 1.5VOUT 3.3VOUT* 1.8VOUT 20 1.8VOUT 20 20 *FOR 5V TO 3.3V CONVERSION, 2.5VOUT 2.5VOUT 10 SEE FREQUENCY ADJUSTMENT 10 3.3VOUT 10 3.3VOUT IN APPLICATIONS INFORMATION 3.3VOUT (950kHz) 3.3VOUT (1MHz) 0 0 0 0 2 4 6 8 0 2 4 6 8 0 1 2 3 4 5 6 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4602HV G01 4602HV G02 4602HV G03
Light Load Effi ciency vs Load Current with 12V Effi ciency vs Load Current IN (FCB > 0.7V, <5V) with Different FCB Settings 1.2V Transient Response
100 100 VIN = 12V 90 90 VOUT = 1.5V V 80 FCB > 0.7V OUT 80 50mV/DIV 70 70 IOUT 60 FCB = GND 2A/DIV 50 60 20µs/DIV 4602HV G05 40 50 EFFICIENCY (%) EFFICIENCY (%) 1.2V AT 3A/µs LOAD STEP 30 1.2V C OUT OUT = 22µF, 6.3V CERAMIC 40 1.5V 330 OUT µF, 4V SANYO POS CAP 20 1.8VOUT 2.5V 30 10 OUT 3.3VOUT 0 20 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0.1 1 5 LOAD CURRENT (A) LOAD CURRENT (A) 4602HV G15 4602HV G04
1.5V Transient Response 1.8V Transient Response 2.5V Transient Response
VOUT VOUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV IOUT IOUT IOUT 2A/DIV 2A/DIV 2A/DIV 20µs/DIV 4602HV G07 20µs/DIV 4602HV G06 20µs/DIV 4602HV G08 1.8V AT 3A/µs LOAD STEP 1.5V AT 3A/µs LOAD STEP 2.5V AT 3A/µs LOAD STEP C C OUT = 22µF, 6.3V CERAMIC COUT = 22µF, 6.3V CERAMIC OUT = 22µF, 6.3V CERAMIC 330µF, 4V SANYO POS CAP 330µF, 4V SANYO POS CAP 330µF, 4V SANYO POS CAP 4602hvf 4