Datasheet LTC3890-3 (Analog Devices) - 7

LTC3890-3
Typical perForMance characTerisTics TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.10 1.40 808 1.35 806 1.05 1.30 RUN1 RISING 804 RUN2 RISING 1.25 802 1.00 1.20 800 1.15 RUN1 FALLING 798 RUN PIN VOLTAGE (V) TRACK/SS CURRENT (µA) 0.95 1.10 RUN2 FALLING 796 1.05 REGULATED FEEDBACK VOLTAGE (mV) 794 0.90 1.00 792 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 38903 G19 38903 G20 38903 G21
SENSE– Pin Total Input Bias Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
800 30 600 700 VOUT > INTVCC + 0.5V 25 550 FREQ = INTVCC 600 500 20 500 400 15 450 300 – CURRENT (µA) 200 10 FREQUENCY (kHz) 400 SENSE 100 SHUTDOWN CURRENT (µA) FREQ = GND V 5 OUT < INTVCC – 0.5V 350 0 0 –100 300 –75 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 45 50 55 60 65 –75 –50 –25 0 25 50 75 100 125 150 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 38903 G23 38903 G22 38903 G24
Undervoltage Lockout Threshold Oscillator Frequency vs Temperature vs Input Voltage Shutdown Current vs Temperature
4.2 356 22 FREQ = GND VIN = 12V 4.1 354 20 18 4.0 352 RISING 16 3.9 350 VOLTAGE (V) 14 CC FALLING TOR FREQUENCY (kHz) 3.8 348 INTV 12 SHUTDOWN CURRENT (µA) 3.7 OSCILLA 346 10 3.6 344 8 –75 –50 –25 0 25 50 75 100 125 150 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) 38903 G26 38903 G27 38903 G25 38903f For more information www.linear.com/3890-3 7 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Typical Performance Characteristics Operation Package Description Typical Application