Datasheet LT8607, LT8607B (Analog Devices) - 7

LT8607/LT8607B
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Minimum Load to Full Switching Frequency Burst Frequency vs Frequency (SYNC Float to 1.9V) vs Temperature Output Current (MSOP Package) or LT8607B DFN
2025 2500 150 RT = 18.2kΩ L = 2.2µH L = 2.2µH 2020 2250 VIN = 12V V 125 IN = 12V 2015 2000 VOUT = 3.3V VOUT = 3.3V SYNC = 0V OR LT8607 DFN 2010 1750 RT = 18.2kΩ 100 2005 1500 2000 1250 75 FREQUENCY (kHz) 1995 1000 50 1990 750 OUTPUT CURRENT (mA) SWITCHING 1985 SWITCHING FREQUENCY (kHz) 500 25 1980 250 1975 0 0 –50 –10 30 70 110 150 0 25 50 75 100 125 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 8607 G19 8607 G20 8607 G21
Soft-Start Tracking Soft-Start Current vs Temperature Frequency Foldback (MSOP Package) (MSOP Package)
2500 1.0 2.5 SYNC = 0V OR LT8607 DFN 2250 0.9 2.4 2000 0.8 2.3 1750 0.7 2.2 1500 0.6 2.1 1250 TAGE (V) 0.5 2.0 T CURRENT (µA) 1000 0.4 AR 1.9 FB VOL FREQUENCY (kHz) 750 0.3 T-ST 1.8 500 0.2 SOF 1.7 250 0.1 1.6 0 0 1.5 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 0.1 0.2 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.2 –50 –30 –10 10 30 50 70 90 110 130 150 FB VOLTAGE (V) SS VOLTAGE (V) TEMPERATURE (°C) 8607 G22 8607 G23 8607 G24
VIN UVLO vs Temperature Start-Up Dropout Start-Up Dropout
3.25 7 7 7 7 RLOAD = 50Ω RLOAD = 6.66Ω 6 6 6 6 3.00 OUTPUT VOL OUTPUT VOL 5 5 5 5 2.75 4 4 4 TAGE (V) 4 TAGE (V) T UVLO (V) T 3 3 AGE (V) AGE (V) 2.50 3 3 V IN INPUT VOL 2 2 INPUT VOL 2 2 V 2.25 IN VIN 1 VOUT 1 V 1 OUT 1 2.00 0 0 0 0 –50 –30 –10 10 30 50 70 90 110 130 150 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 8607 G25 8607 G26 8607 G27 Rev. D For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts