Datasheet LTC3604 (Analog Devices) - 3

LTC3604
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C. VVIN = 12V, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VVIN Input Supply Range l 3.6 15 V IQ Input DC Supply Current Forced Continuous Operation MODE = 0V 700 1000 µA Sleep Current MODE = INTVCC, VFB > 0.6V 300 500 µA Shutdown RUN = 0V 14 25 µA VFB Feedback Reference Voltage l 0.594 0.600 0.606 V ∆VLINEREG Reference Voltage Line Regulation VVIN = 3.6V to 15V 0.01 %/V ∆VLOADREG Output Voltage Load Regulation ITH = 0.6V to 1.6V 0.1 % IFB Feedback Pin Input Current VFB = 0.6V ±30 nA gm(EA) Error Amplifier Transconductance ITH = 1.2V 2.0 mS tON(MIN) Minimum On-Time VON = 1V, VIN = 4V 20 ns tOFF(MIN) Minimum Off-Time VIN = 6V 40 60 ns ILIM Valley Switch Current Limit 2.6 3.4 4.3 A Negative Valley Switch Current Limit –1.7 A fOSC Oscillator Frequency VRT = INTVCC 1.4 2 2.6 MHz RRT = 160k 1.7 2 2.3 MHz RRT = 80k 3.4 4 4.6 MHz RDS(ON) Top Switch On-Resistance 130 mΩ Bottom Switch On-Resistance 100 mΩ VVIN(OV) VIN Overvoltage Lockout Threshold VIN Rising l 16.8 17.5 18 V VIN Falling l 15.8 16.5 17 V VINTVCC INTVCC Voltage 3.6V < VIN < 15V 3.13 3.3 3.45 V ∆INTVCC INTVCC Load Regulation (Note 4) IINTVCC = 0mA to 20mA 0.6 % VUVLO INTVCC Undervoltage Lockout INTVCC Rising, VIN = INTVCC 2.75 2.9 V Threshold INTVCC Falling, VIN = INTVCC 2.45 V VRUN RUN Threshold RUN Rising l 1.21 1.25 1.29 V RUN Falling l 0.97 1.0 1.03 V IRUN(LKG) RUN Leakage Current VVIN = 15V 0 ±3 µA VFB_GB PGOOD Good-to-Bad Threshold FB Rising 8 10 % FB Falling –8 –10 % VFB_BG PGOOD Bad-to-Good Threshold FB Rising –3 –5 % FB Falling 3 5 % tPGOOD Power Good Filter Time 20 40 µs RPGOOD PGOOD Pull-Down Resistance 10mA Load 15 Ω ISW(LKG) Switch Leakage Current VRUN = 0V 0.01 1 µA tSS Internal Soft-Start Time VFB from 10% to 90% Full Scale 400 700 µs VFB_TRACK TRACK Pin TRACK = 0.3V 0.28 0.3 0.315 mV ITRACK TRACK Pull-Up Current 1.4 µA VMODE/SYNC MODE Threshold Voltage MODE VIH l 1.0 V MODE VIL l 0.4 V SYNC Threshold Voltage SYNC VIH l 0.95 V IMODE MODE Input Current MODE = 0V –1.5 µA MODE = INTVCC 1.5 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings junction temperature range are assured by design, characterization, and may cause permanent damage to the device. Exposure to any Absolute correlation with statistical process controls. The LTC3604I is guaranteed Maximum Rating condition for extended periods may affect device over the full –40°C to 125°C operating junction temperature range. The reliability and lifetime. maximum ambient temperature is determined by specific operating
Note 2:
The LTC3604E is guaranteed to meet performance specifications conditions in conjunction with board layout, the rated package thermal from 0°C to 85°C. Specifications over the –40°C to 125°C operating resistance and other environmental factors. 3604fa For more information www.linear.com/LTC3604 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts