Datasheet LTC7815 (Analog Devices) - 9

LTC7815
TYPICAL PERFORMANCE CHARACTERISTICS INTVCC and EXTVCC EXTVCC Switchover and INTVCC INTVCC Line Regulation vs Load Current Voltages vs Temperature
5.5 5.6 6.0 5.4 EXTVCC = 0V 5.8 5.4 EXTVCC = 8.5V 5.6 5.2 INTVCC TAGE (V) 5.4 5.3 5.0 VOL 5.2 TAGE (V) TAGE (V) 4.8 V CC 5.0 VOL VOL EXTVCC = 5V EXTV V CC 5.2 V CC 4.6 4.8 CC RISING INT INT AND INT 4.6 4.4 V CC 5.1 4.4 EXTVCC FALLING EXT 4.2 4.2 V 5.0 BIAS = 12V 4.0 4.0 0 5 10 15 20 25 30 35 40 0 20 40 60 80 100 –75 –50 –25 0 25 50 75 100 125 150 INPUT VOLTAGE (V) LOAD CURRENT (mA) TEMPERATURE (°C) 7815 G19 7815 G20 7815 G21
SENSE Pins Total Input Current Buck SENSE– Pin Input Bias Boost SENSE Pin Total Input vs VSENSE Voltage Current vs Temperature Current vs Temperature
800 900 200 VIN = 12V 700 SENSE1, 2 PINS 800 180 VOUT > INTVCC + 0.5V 160 SENSE3+ PIN 600 700 140 600 500 120 500 400 100 400 300 80 300 SENSE CURRENT (µA) 60 200 SENSE3 PIN SENSE CURRENT (µA) SENSE CURRENT (µA) 200 40 100 100 20 V SENSE3– PIN 0 0 OUT < INTVCC – 0.5V 0 0 5 10 15 20 25 30 35 40 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 VSENSE COMMON MODE VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 7815 G22 7815 G23 7815 G24
Maximum Current Sense Maximum Current Sense TRACK/SS Pull-Up Current Threshold vs Duty Cycle Threshold vs ITH Voltage vs Temperature
80 60 6.00 70 50 5.75 TAGE (mV) 40 60 TAGE (mV) 5.50 30 50 BOOST 5.25 BUCK 20 40 5.00 10 30 4.75 0 20 –10 TRACK/SS CURRENT (µA) 4.50 PULSE-SKIPPING 10 –20 FORCED CONTINUOUS 4.25 MAXIMUM CURRENT SENSE VOL MAXIMUM CURRENT SENSE VOL Burst Mode OPERATION 0 –30 4.00 0 10 20 30 40 50 60 70 80 90 100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 –75 –50 –25 0 25 50 75 100 125 150 DUTY CYCLE (%) ITH (V) TEMPERATURE (°C) 7815 G25 7815 G26 7815 G27 7815f For more information www.linear.com/LTC7815 9 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS FUNCTIONAL DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS