Datasheet LTM4636-1 (Analog Devices) - 6

LTM4636-1 TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current Efficiency vs Load Current with Efficiency vs Load Current with with 5VIN 8VIN 12VIN
100 100 100 95 95 95 90 90 90 85 85 85 EFFICIENCY (%) 80 3.3VOUT, 500kHz EFFICIENCY (%) 3.3VOUT, 700kHz EFFICIENCY (%) 3.3VOUT, 750kHz 2.5V 80 80 OUT, 500kHz 2.5VOUT, 600kHz 2.5VOUT, 650kHz 1.8VOUT, 450kHz 1.8VOUT, 500kHz 1.8VOUT, 600kHz 75 1.5VOUT, 425kHz 75 1.5VOUT, 450kHz 75 1.5VOUT, 550kHz 1.2VOUT, 300kHz 1.2VOUT, 400kHz 1.2VOUT, 400kHz 1VOUT, 300kHz 1VOUT, 350kHz 1VOUT, 350kHz 70 70 70 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 46361 G01 46361 G02 46361 G03
Burst Mode Efficiency vs Load Current 1V Transient Response 1.2V Transient Response
100 Burst Mode OPERATION V 50mV/DIV 50mV/DIV IN 12V 90 V 50µs/DIV 50µs/DIV OUT 1.5V 80 10A/DIV 18A/µs 10A/DIV STEP 18A/µs 70 STEP 46361 G05 46361 G06 EFFICIENCY (%) 60 12V TO 1V TRANSIENT RESPONSE 12V TO 1.2V TRANSIENT RESPONSE COUT = 4 × 100µF CERAMIC, 3 × 470µF 2.5V COUT = 4 × 100µF CERAMIC, 3 × 470µF 2.5V POSCAP 5mΩ POSCAP 5mΩ 50 CFF = 22pF, SW FREQ = 400kHz CFF = 22pF, SW FREQ = 400kHz CCOMP = 100pF 40 0 1 2 3 4 5 OUTPUT CURRENT (A) 46361 G04
1.5V Transient Response 1.8V Transient Response 2.5V Transient Response
50mV/DIV 50mV/DIV 100mV/DIV 50µs/DIV 100µs/DIV 100µs/DIV 10A/DIV 10A/DIV 10A/DIV 18A/µs 18A/µs 18A/µs STEP STEP STEP 46361 G07 46361 G08 46361 G09 12V TO 1.5V TRANSIENT RESPONSE 12V TO 1.8V TRANSIENT RESPONSE 12V TO 2.5V TRANSIENT RESPONSE COUT = 4 × 100µF CERAMIC, 3 × 470µF 2.5V COUT = 6 × 100µF CERAMIC, 2 × 470µF 4V COUT = 6 × 100µF CERAMIC, 2 × 470µF 4V POSCAP 5mΩ POSCAP 5mΩ POSCAP 5mΩ CFF = 22pF, SW FREQ = 425kHz CFF = 22pF, SW FREQ = 500kHz CFF = 22pF, SW FREQ = 650kHz CCOMP = 100pF CCOMP = 100pF CCOMP = 100pF 46361fa 6 For more information www.linear.com/LTM4636-1