Datasheet LTC3414 (Analog Devices) - 4

LTC3414
W U TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Load Current, Burst Efficiency vs Load Current, Mode Operation Forced Continuous Efficiency vs Load Current
100 100 100 TA = 25°C VOUT = 2.5V TA = 25°C 95 V 90 Burst Mode OPERATION IN = 3.3V T 95 A = 25°C 90 80 V 90 IN = 5V VIN = 3.3V 85 70 85 VIN = 5V 80 60 80 FORCED CONTINUOUS 75 50 75 70 40 70 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 30 65 60 20 60 55 10 55 VIN = 3.3V VOUT = 2.5V 50 0 50 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3414 G10 3414 G11 3414 G12
Efficiency vs Input Voltage Efficiency vs Frequency Load Regulation
98 100 0 VOUT = 2.5V VIN = 3.3V VIN = 3.3V 96 T L = 1μH V V I A = 25°C OUT = 2.5V OUT = 2.5V OUT = 1A 94 95 T –0.05 A = 25°C TA = 25°C 92 L = 0.47μH 90 –0.10 90 (%) L = 0.2μH 88 OUT IOUT = 4A 85 /V –0.15 86 OUT EFFICIENCY (%) EFFICIENCY (%) ΔV 84 80 –0.20 82 75 –0.25 80 78 70 –0.30 2.5 3.0 3.5 4.0 4.5 5.0 5.5 300 800 1300 1800 2300 2800 3300 3800 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 INPUT VOLTAGE (V) FREQUENCY (kHz) LOAD CURRENT (A) 3414 G13 3414 G14 3414 G15
Load Step Transient Forced Burst Mode Operation Continuous
OUTPUT OUTPUT VOLTAGE VOLTAGE 20mV/DIV 100mV/DIV INDUCTOR INDUCTOR CURRENT CURRENT 500mA/DIV 2A/DIV 3414 G16 3414 G17 10μs/DIV 20μs/DIV VIN = 3.3V, VOUT = 2.5V VIN = 3.3V, VOUT = 2.5V LOAD = 250mA LOAD STEP = 0A TO 4A 3414fb 4