Datasheet LT3999 (Analog Devices) - 4

LT3999
TYPICAL PERFORMANCE CHARACTERISTICS VIN Shutdown Current Switching Frequency VCESAT vs Switch Current
2.5 400 400 375 350 2.0 350 300 1.5 325 (mV) 250 300 CESAT 200 1.0 275 150 FREQUENCY (kHz) SWITCH V SHUTDOWN CURRENT (µA) 250 100 0.5 225 50 0 200 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 600 700 800 900 1000 TEMPERATURE (°C) TEMPERAURE (°C) SWITCH CURRENT (mA) 3999 G01 3999 G02 3999 G03
Switch VCESAT Switch Leakage Current Switch Current Limit
600 3.0 2000 SWITCH CURRENT = 1A 1800 2.5 500 1600 RILIM/SS = OPEN 1400 2.0 (mV) 400 1200 RILIM/SS = 80.6k CESAT 1.5 1000 300 800 1.0 SWITCH V 600 RILIM/SS = 43.2k SWITCH CURRENT (µA) CURRENT LIMIT (mA) 200 400 0.5 200 100 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3999 G04 3999 G05 3999 G06
UVLO Threshold Voltage OVLO Threshold Voltage
1.40 1.40 1.35 1.35 1.30 1.30 UVLO RISING OVLO RISING 1.25 1.25 1.20 1.20 1.15 UVLO FALLING 1.15 OVLO FALLING 1.10 1.10 1.05 1.05 UVLO PIN VOLTAGE (V) OVLO PIN VOLTAGE (V) 1.00 1.00 0.95 0.95 0.90 0.90 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3999 G07 3999 G08 3999fa 4 For more information www.linear.com/LT3999 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts