Datasheet LTC3619 (Analog Devices) - 4

LTC3619
Typical perForMance characTerisTics TA = 25°C, VIN = 5V, unless otherwise noted. Efficiency vs Input Voltage Burst Mode Operation Supply Current vs Temperature (Channel 2)
100 100 I SW LOAD = 0 RUN1 = RUN2 = V 2V/DIV IN 90 80 VIN = 5V V 80 OUT 100mV/DIV AC- 60 70 COUPLED VIN = 2.7V 60 40 I EFFICIENCY (%) L 100mA/DIV SUPPLY CURRENT (µA) 50 IOUT = 1mA 20 I 3619 G01 OUT = 10mA 2µs/DIV 40 I V OUT = 100mA IN = 5V V I V OUT = 3.3V OUT = 800mA OUT = 3.3V 0 30 ILOAD = 25mA –50 –25 0 25 50 75 100 125 3.5 4 4.5 5 5.5 TEMPERATURE (°C) INPUT VOLTAGE (V) 3619 G02 3619 G02
Regulated Voltage Oscillator Frequency vs Temperature vs Temperature Switch Leakage vs Input Voltage
1.5 2.5 1000 CHANNEL 1 CHANNEL 2 1.0 2.4 800 2.3 0.5 2.2 600 0 MAIN SWITCH ERROR (%) 2.1 400 V FB –0.5 FREQUENCY (MHz) SYNCHRONOUS SWITCH 2.0 V LEAKAGE CURRENT (pA) IN = 2.7V –1.0 200 1.9 VIN = 3.6V VIN = 4.2V VIN = 5V –1.5 1.8 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 2.5 3 3.5 4 4.5 5 5.5 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3619 G04 3619 G05 3619 G06
Switch On-Resistance Switch On-Resistance Switch On-Resistance vs Input Voltage vs Temperature vs Temperature
0.65 0.8 0.5 0.7 CHANNEL 1 CHANNEL 1 CHANNEL 2 0.60 CHANNEL 2 (PFET) 0.7 MAIN SWITCH 0.4 0.6 MAIN SWITCH 0.55 NFET R 0.50 0.6 0.3 0.5 (Ω) (Ω) 0.45 (Ω) DS(ON) 0.5 DS(ON) 0.2 0.4 0.40 (NFET) R DS(ON) SYNCHRONOUS SWITCH (Ω) MAIN SWITCH R DS(ON) 0.35 0.4 PFET R 0.1 0.3 0.30 0.3 VIN = 2.7V 0 V 0.2 IN = 2.7V 0.25 SYNCHRONOUS SWITCH V VIN = 3.6V SYNCHRONOUS SWITCH IN = 3.6V V V 0.20 0.2 IN = 5V –0.1 IN = 5V 0.1 2.5 3 3.5 4 4.5 5 5.5 6 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 VIN (V) TEMPERATURE (°C) TEMPERATURE (°C) 3619 G07 3619 G08 3619 G09 3619fa 4 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Functional Diagram Operation Applications Information Package Description Typical Application Related Parts