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LT3466 Datasheet(PDF) 2 Page - Linear Technology |
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LT3466 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 20 page  2 LT3466 3466fa Input Voltage (VIN) ................................................... 24V SW1, SW2 Voltages ................................................ 44V VOUT1, VOUT2 Voltages ............................................. 44V CTRL1, CTRL2 Voltages ........................................... 24V FB1, FB2, RT Voltages ................................................ 2V Operating Temperature Range (Note 2) ... –40 °C to 85°C ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO TJMAX = 125°C, θJA = 43°C/W, θJC = 2.96°C/W EXPOSED PAD (PIN 11) IS GND MUST BE SOLDERED TO PCB ORDER PART NUMBER DD PART MARKING LBBH LT3466EDD Consult LTC Marketing for parts specified with wider operating temperature ranges. TOP VIEW 11 DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN 10 9 6 7 8 4 5 3 2 1 FB1 CTRL1 RT CTRL2 FB2 VOUT1 SW1 VIN SW2 VOUT2 (Note 1) Maximum Junction Temperature ......................... 125 °C Storage Temperature Range DFN .................................................. –65 °C to 125°C TSSOP .............................................. –65 °C to 150°C Lead Temperature (Soldering, 10 sec, TSSOP) ..... 300 °C ORDER PART NUMBER FE PART MARKING 3466EFE LT3466EFE FE PACKAGE 16-LEAD PLASTIC TSSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 GND NC VOUT1 SW1 VIN SW2 VOUT2 GND GND FB1 CTRL1 NC RT CTRL2 FB2 GND 17 TJMAX = 125°C, θJA = 38°C/W, θJC(PAD) = 10°C/W EXPOSED PAD (PIN 17) IS GND MUST BE SOLDERED TO PCB ELECTRICAL CHARACTERISTICS The ● denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3V, VCTRL1 = 3V, VCTRL2 = 3V, unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Operating Voltage 2.7 V Maximum Operating Voltage 24 V FB1 Voltage ● 192 200 208 mV FB2 Voltage ● 192 200 208 mV Offset Voltage (VOS) Between FB1 and FB2 Voltages VOS = |FB1 – FB2| 0 1.5 7.5 mV FB1 Pin Bias Current VFB1 = 0.2V (Note 3) 10 50 nA FB2 Pin Bias Current VFB2 = 0.2V (Note 3) 10 50 nA Quiescent Current VFB1 = VFB2 = 0.3V 5 7.5 mA CTRL1 = CTRL2 = 0V 16 25 µA Switching Frequency RT = 48.7k 0.8 1 1.2 MHz Oscillator Frequency Range (Note 4) 200 2000 kHz Nominal RT Pin Voltage RT = 48.7k 0.54 V Maximum Duty Cycle RT = 48.7k ● 90 96 % RT = 20.5k 92 % RT = 267k 99 % |
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