Datasheet LTC3897 (Analog Devices) - 9

LTC3897
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Input Supply Current vs BOOST Shutdown (RUN) Undervoltage Lockout Threshold Temperature Threshold vs Temperature vs Temperature
400.0 1.40 9 RUN = 0V DRVSET = INTVCC 350.0 SGEN = DGEN = 12V 1.35 8 DRVCC RISING IS+ = IS– = CS – 0.1V 300.0 7 DRVCC FALLING 1.30 RUN RISING 250.0 TAGE (V) 6 TAGE (V) 200.0 1.25 Y CURRENT (µA) VOL 5 DRVSET = GND 150.0 QUIESCENT CURRENT RUN FALLING CC 1.20 DRVCC RISING VFB = 1.25V RUN PIN VOL DRV 4 100.0 SGEN = DGEN = 0V DRVCC FALLING INPUT SUPPL 1.15 3 50.0 0 1.10 2 –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 TEMPRATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3897 G13 3897 G14 3897 G15
DRVCC and EXTVCC DRVCC Line Regulation vs Load Current
11 6.4 DRVSET = INTV 6.2 CC EXTVCC = 0V 10 6.0 5.8 EXTVCC = 8.5V 9 5.6 5.4 TAGE (V) TAGE (V) 8 5.2 VOL VOL 5.0 CC CC 7 4.8 EXTVCC = 5V DRV DRV 4.6 DRVSET = GND 6 4.4 VBIAS = 12V 4.2 DRVSET = GND 5 4.0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 0 25 50 75 100 125 150 INPUT VOLTAGE (V) LOAD CURRENT (mA) 3897 G16 3897 G17
EXTVCC Switchover and DRVCC Oscillator Frequency Voltages vs Temperature vs Temperature
11 600 DRVCC FREQ = INTV 10 CC 550 9 DRVSET = INTVCC 500 8 EXTVCC RISING TAGE (V) 450 VOL 7 EXTVCC FALLING CC DRVCC DRV FREQUENCY (kHz) 400 6 FREQ = GND DRVSET = GND EXTV 5 CC RISING 350 EXTVCC FALLING 4 300 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3897 G18 3897 G19 Rev. A For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts