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LTC3547BEDDB Datasheet(PDF) 2 Page - Linear Integrated Systems |
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LTC3547BEDDB Datasheet(HTML) 2 Page - Linear Integrated Systems |
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2 / 16 page  LTC3547 2 3547fa VIN ............................................................... –0.3V to 6V VFB1, VFB2 ......................................... –0.3V to VIN +0.3V RUN1, RUN2..................................... –0.3V to VIN +0.3V SW1, SW2 (DC) ................................ –0.3V to VIN +0.3V P-Channel Switch Source Current (DC) ...............500mA N-Channel Switch Sink Current (DC) ...................500mA Peak SW Sink and Source Current (Note 5) .........700mA Ambient Operating Temperature Range ... –40°C to 85°C Maximum Junction Temperature .......................... 125°C Storage Temperature Range................... –65°C to 125°C (Note 1) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN VIN Operating Voltage ● 2.5 5.5 V VUV VIN Undervoltage Lockout VIN Low to High ● 2.0 2.5 V IFB Feedback Pin Input Current LTC3547, VFB = VFBREG LTC3547-1, VFB = VFBREG ● ● 3 30 6 nA µA VFBREG1 Regulated Feedback Voltage (VFB1) LTC3547, 0°C ≤ TA ≤ 85°C LTC3547, –40°C ≤ TA ≤ 85°C LTC3547-1, 0°C ≤ TA ≤ 85°C LTC3547-1, –40°C ≤ TA ≤ 85°C ● ● 0.590 0.588 1.770 1.764 0.600 0.600 1.800 1.800 0.610 0.612 1.830 1.836 V V V V VFBREG2 Regulated Feedback Voltage (VFB2) LTC3547, 0°C ≤ TA ≤ 85°C LTC3547, –40°C ≤ TA ≤ 85°C LTC3547-1, 0°C ≤ TA ≤ 85°C LTC3547-1, –40°C ≤ TA ≤ 85°C ● ● 0.590 0.588 1.180 1.176 0.600 0.600 1.200 1.200 0.610 0.612 1.220 1.224 V V V V ΔVLINEREG Reference Voltage Line Regulation VIN = 2.5V to 5.5V 0.3 0.5 %/V ΔVLOADREG Output Voltage Load Regulation ILOAD = 0mA to 300mA 0.5 % IS Input DC Supply Current Active Mode (Note 3) Sleep Mode Shutdown VFB1 = VFB2 = 0.95V × VFBREG VFB1 = VFB2 = 1.05V × VFBREG, VIN = 5.5V RUN1 = RUN2 = 0V, VIN = 5.5V 450 40 0.1 700 60 1 µA µA µA fOSC Oscillator Frequency VFB = 0.6V ● 1.8 2.25 2.7 MHz ILIM Peak Switch Current Limit Channel 1 (300mA) Channel 2 (300mA) VIN = 3V, VFB < VFBREG, Duty Cycle < 35% 400 400 550 550 mA mA ELECTRICAL CHARACTERISTICS ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW 9 DDB PACKAGE 8-LEAD (3mm × 2mm) PLASTIC DFN 5 6 7 8 4 3 2 1 VFB1 RUN1 VIN SW1 VFB2 RUN2 SW2 GND TJMAX = 125°C, θJA = 76°C/W EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB ORDER PART NUMBER DDB PART MARKING LTC3547EDDB LTC3547EDDB-1 LCDP LCPC Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. |
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