Datasheet LTC3419 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | Dual Monolithic 600mA Synchronous Step-Down Regulator |
| Seiten / Seite | 16 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, unless … |
| Dateiformat / Größe | PDF / 264 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, unless otherwise noted. Burst Mode Operation
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LTC3419
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, unless otherwise noted. Burst Mode Operation Pulse Skip Mode Operation Effi ciency vs Input Voltage
100 IOUT = 100mA SW SW 90 2V/DIV 2V/DIV 80 V I OUT OUT = 1mA 50mV/DIV VOUT I AC-COUPLED 50mV/DIV 70 OUT = 600mA IOUT = 10mA AC-COUPLED 60 IL I 100mA/DIV L EFFICIENCY (%) 100mA/DIV 50 IOUT = 0.1mA 3419 G01 3419 G02 2μs/DIV 5μs/DIV 40 VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V 30 ILOAD = 25mA ILOAD = 5mA 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) 3419 G03
Reference Voltage Oscillator Frequency Supply Current vs Temperature vs Temperature vs Temperature
1.5 2.6 55 RUN1 = RUN2 = VIN I 2.5 50 LOAD = 0A 1.0 2.4 VIN = 4.2V 45 0.5 2.3 40 VIN = 3.6V VIN = 5.5V 0 2.2 35 (% ERROR) V V IN = 2.7V Y CURRENT (μA) IN = 2.7V FBV 2.1 30 –0.5 FREQUENCY (MHz) 2.0 SUPPL 25 –1.0 1.9 20 –1.5 1.8 15 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3419 G04 3419 G05 3419 G06
Switch On-Resistance Switch On-Resistance Switch Leakage vs Input Voltage vs Input Voltage vs Temperature
3.0 0.50 0.6 2.5 0.45 0.5 MAIN SWITCH 2.0 0.40 MAIN SWITCH MAIN SWITCH 0.4 (Ω) (Ω) 1.5 0.35 DS(ON) DS(ON) R R 0.3 1.0 SYNCHRONOUS 0.30 SYNCHRONOUS SWITCH LEAKAGE CURRENT (nA) SWITCH SYNCHRONOUS SWITCH 0.2 0.5 0.25 VIN = 2.7V VIN = 3.6V VIN = 4.2V 0 0.20 0.1 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 –50 –25 0 25 50 75 100 125 VIN (V) VIN (V) TEMPERATURE (°C) 3419 G07 3419 G08 3419 G09 3419fa 4
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, unless otherwise noted. Burst Mode Operation Pulse Skip Mode Operation Effi ciency vs Input Voltage
100 IOUT = 100mA SW SW 90 2V/DIV 2V/DIV 80 V I OUT OUT = 1mA 50mV/DIV VOUT I AC-COUPLED 50mV/DIV 70 OUT = 600mA IOUT = 10mA AC-COUPLED 60 IL I 100mA/DIV L EFFICIENCY (%) 100mA/DIV 50 IOUT = 0.1mA 3419 G01 3419 G02 2μs/DIV 5μs/DIV 40 VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V 30 ILOAD = 25mA ILOAD = 5mA 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) 3419 G03
Reference Voltage Oscillator Frequency Supply Current vs Temperature vs Temperature vs Temperature
1.5 2.6 55 RUN1 = RUN2 = VIN I 2.5 50 LOAD = 0A 1.0 2.4 VIN = 4.2V 45 0.5 2.3 40 VIN = 3.6V VIN = 5.5V 0 2.2 35 (% ERROR) V V IN = 2.7V Y CURRENT (μA) IN = 2.7V FBV 2.1 30 –0.5 FREQUENCY (MHz) 2.0 SUPPL 25 –1.0 1.9 20 –1.5 1.8 15 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3419 G04 3419 G05 3419 G06
Switch On-Resistance Switch On-Resistance Switch Leakage vs Input Voltage vs Input Voltage vs Temperature
3.0 0.50 0.6 2.5 0.45 0.5 MAIN SWITCH 2.0 0.40 MAIN SWITCH MAIN SWITCH 0.4 (Ω) (Ω) 1.5 0.35 DS(ON) DS(ON) R R 0.3 1.0 SYNCHRONOUS 0.30 SYNCHRONOUS SWITCH LEAKAGE CURRENT (nA) SWITCH SYNCHRONOUS SWITCH 0.2 0.5 0.25 VIN = 2.7V VIN = 3.6V VIN = 4.2V 0 0.20 0.1 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 –50 –25 0 25 50 75 100 125 VIN (V) VIN (V) TEMPERATURE (°C) 3419 G07 3419 G08 3419 G09 3419fa 4