Datasheet LT3470A (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| Seiten / Seite | 20 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| Dateiformat / Größe | PDF / 207 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Efficiency, VOUT = 3.3V. Efficiency, VOUT = 5V
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LT3470A
Textversion des Dokuments
LT3470A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V VFB vs Temperature
90 90 1.260 L = TOKO D52LC 47μH L = TOKO D52LC 47μH V T IN = 12V A = 25°C VIN = 7V TA = 25°C 80 VIN = 12V 80 1.255 70 70 VIN = 36V VIN = 24V V V IN = 24V IN = 36V 60 (V) 60 1.250 FBV EFFICIENCY (%) 50 EFFICIENCY (%) 50 1.245 40 40 30 30 1.240 0.1 1 10 100 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3470a G01 3470a G02 3470a G03
Top and Bottom Switch Current VIN Quiescent Current Limits (VFB = 0V) vs Temperature vs Temperature
600 50 550 40 500 BIAS < 3V 450 30 400 350 CURRENT (μA) 20 INV CURRENT LIMIT (mA) 300 10 BIAS > 3V 250 200 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G04 3470a G05
BIAS Quiescent Current SHDN Bias Current (Bias > 3V) vs Temperature vs Temperature
30 9 8 VSHDN = 36V 25 7 20 6 5 15 4 CURRENT (μA) BIAS CURRENT (μA) 10 HDN 3 S 2 VSHDN = 2.5V 5 1 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G06 3470a G07 3470afb 4
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V VFB vs Temperature
90 90 1.260 L = TOKO D52LC 47μH L = TOKO D52LC 47μH V T IN = 12V A = 25°C VIN = 7V TA = 25°C 80 VIN = 12V 80 1.255 70 70 VIN = 36V VIN = 24V V V IN = 24V IN = 36V 60 (V) 60 1.250 FBV EFFICIENCY (%) 50 EFFICIENCY (%) 50 1.245 40 40 30 30 1.240 0.1 1 10 100 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3470a G01 3470a G02 3470a G03
Top and Bottom Switch Current VIN Quiescent Current Limits (VFB = 0V) vs Temperature vs Temperature
600 50 550 40 500 BIAS < 3V 450 30 400 350 CURRENT (μA) 20 INV CURRENT LIMIT (mA) 300 10 BIAS > 3V 250 200 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G04 3470a G05
BIAS Quiescent Current SHDN Bias Current (Bias > 3V) vs Temperature vs Temperature
30 9 8 VSHDN = 36V 25 7 20 6 5 15 4 CURRENT (μA) BIAS CURRENT (μA) 10 HDN 3 S 2 VSHDN = 2.5V 5 1 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3470a G06 3470a G07 3470afb 4