Datasheet LTC3633A-2, LTC3633A-3 (Analog Devices) - 6

LTC3633A-2/LTC3633A-3
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, PVIN1 = PVIN2 = SVIN = 12V, fSW = 1MHz, L = 1µH unless otherwise noted. Internal MOSFET RDS(ON) Quiescent Current vs VIN vs Temperature Burst Mode Operation Shutdown Current vs VIN
200 900 24 180 800 22 20 160 700 90°C 18 140 600 25°C 16 120 TOP SWITCH 500 (mΩ) –40°C 14 100 (µA) (µA) 12 I Q 400 I Q 10 R DS(ON) 80 300 8 60 BOTTOM SWITCH 200 6 40 4 20 100 2 0 0 0 –50 –25 0 25 50 75 100 125 4 6 8 10 12 14 16 18 20 4 6 8 10 12 14 16 18 20 TEMPERATURE (°C) VIN (V) VIN (V) 3633a23 G10 3633a23 G11 3633a G12
Valley Current Limit TRACKSS Pull-Up Current Switch Leakage vs Temperature vs Temperature vs Temperature
10000 3.9 2.0 SYNCHRONOUS SWITCH 9000 MAIN SWITCH 1.8 3.8 8000 7000 1.6 3.7 6000 (µA) 1.4 5000 (A) 3.6 I LIM 4000 1.2 I TRACKSS 3.5 3000 1.0 LEAKAGE CURRENT (nA) 2000 3.4 0.8 1000 0 3.3 0.6 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3633a23 G13 3633a23 G14 3633a23 G15
Burst Mode Operation Load Step
V SW OUT AC-COUPLED 10V/DIV 100mV/DIV VOUT 50mV/DIV IL 2A/DIV IL 1A/DIV 5µs/DIV 3633a23 G17 20µs/DIV 3633a23 G18 VOUT = 1.8V VOUT = 1.8V ILOAD = 100mA ILOAD = 100mA to 3A CITH = 220pF RITH = 13kΩ 3633a23fb 6 For more information www.linear.com/LTC3633A-2 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description Typical Application Related Parts