Datasheet LTC3899 (Analog Devices) - 10

LTC3899
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Current vs Shutdown Current vs Temperature Input Voltage Quiescent Current vs Temperature
8 14 80 VBIAS = 12V VBIAS = 12V 7 ONE CHANNEL ON 12 70 Burst Mode OPERATION 6 60 10 DRVSET = 70kΩ 5 50 8 4 40 DRVSET = INTVCC 6 3 30 4 DRVSET = GND 20 SHUTDOWN CURRENT (µA) 2 SHUTDOWN CURRENT (µA) QUIESCENT CURRENT (µA) 1 2 10 0 0 0 -75 -50 -25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 45 50 55 60 65 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3899 G28 3899 G29 3899 G30
Oscillator Frequency vs Undervoltage Lockout Threshold Buck Foldback Current Temperature vs Temperature
100 600 8 RISING 90 7.5 550 FREQ = INTVCC 80 7 DRVSET = INTVCC TAGE (mV) 70 6.5 500 FALLING 60 6 TAGE (V) 50 450 5.5 VOL 40 CC 5 400 30 FREQUENCY (kHz) DRV 4.5 RISING DRVSET = GND 20 FREQ = GND 4 350 10 3.5 FALLING MAXIMUM CURRENT SENSE VOL 0 300 3 0 100 200 300 400 500 600 700 800 -75 -50 -25 0 25 50 75 100 125 150 -75 -50 -25 0 25 50 75 100 125 150 FEEDBACK VOLTAGE (mV) TEMPERATURE (°C) TEMPERATURE (°C) 3899 G31 3899 G32 3899 G33
BOOST3 Charge Pump Output BOOST3 Charge Pump Charging BOOST3 Charge Pump Charging Voltage vs SW3 Voltage Current vs Frequency Current vs Switch Voltage
10 100 120 9 90 110 –55°C 100 8 80 –55°C 90 25°C 7 70 VBOOST3 – VSW3 = 4.5V TAGE (V) 25°C 80 6 60 70 150°C 5 50 60 4 40 50 150°C V 40 BOOST3 – VSW3 = 7.0V –55°C 3 150°C 30 30 BOOST3 – SW3 VOL 25°C 2 150°C –55°C 20 25°C 20 1 FREQ = 350kHz 10 VBOOST3 = 16.5V 10MΩ LOAD BETWEEN BOOST3 AND SW3 CHARGE PUMP CHARGING CURRENT (µA) V CHARGE PUMP CHARGING CURRENT (µA) 10 SW3 = 12V FREQ = 350kHz 0 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 100 200 300 400 500 600 700 800 0 5 10 15 20 25 30 35 40 45 50 55 60 65 SW3 VOLTAGE (V) OPERATING FREQUENCY (kHz) SW3 VOLTAGE (V) 3899 G34 3899 G35 3899 G36 3899fa 10 For more information www.linear.com/LTC3899 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagrams Operation Typical Applications Package Description Typical Application Related Parts