LT3483 Linear Technology, LT3483 Datasheet
LT3483
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LT3483 Summary of contents
Page 1
... The LT3483’s low 300ns off-time permits the use of tiny low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LT3483 is available in the low profile (1mm) SOT-23 TM (ThinSOT ) package. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... FB = –0.05V 2.5V ≤ V ≤ 16V 150mA to GND 40V D = – 40V I = 150mA to GND D Note 3: Current flows out of the pin ORDER PART NUMBER LT3483ES6 SHDN S6 PART MARKING = 256°C/W IN FREE AIR LTBKX = 25°C. A MIN TYP MAX 2 2.4 ● ...
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... D: Anode Terminal of Integrated Schottky Diode. Con- nect to negative terminal of transfer capacitor and exter- nal inductor L2 (flyback configuration cathode of external Schottky diode (inverting charge pump configuration Input Supply. Must be locally bypassed with 1µ greater. LT3483 Switch Off Time 400 350 300 250 200 150 100 ...
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... OPERATIO The LT3483 uses a constant off-time control scheme to provide high efficiency over a wide range of output cur- rents. Operation can be best understood by referring to the Block Diagram. When the voltage at the FB pin is approxi- mately 0V, comparator A3 disables most of the internal cir- cuitry. Output current is then provided by external capacitor ...
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... U Inductor Selection Several recommended inductors that work well with the LT3483 are listed in Table 1, although there are many other manufacturers and devices that can be used. Consult each manufacturer for more detailed information and for their entire selection of related parts. Many different sizes and shapes are available. For inverting charge pump regula- tors with input and output voltages below 7V, a 4.7µ ...
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... LT3483 U U APPLICATIO S I FOR ATIO A capacitor in parallel with feedback resistor R1 is recom- mended to reduce the output voltage ripple. Use a 5pF capacitor for the inverting charge pump, and a 22pF value for the inverting flyback or other dual inductor configura- tions. Output voltage ripple can be reduced to 20mV in some cases using this capacitor in combination with an appro- priately selected output capacitor ...
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... MIN (NOTE 4) 0.95 BSC 0.80 – 0.90 1.00 MAX 0.09 – 0.20 (NOTE 3) 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 LT3483 Switching Waveform 2µs/DIV 3483 TA04b 2.90 BSC (NOTE 4) PIN ONE ID 0.30 – 0.45 6 PLCS (NOTE 3) 0.01 – 0.10 1 ...
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... L1: MURATA LQH2MCN100K02L –5V DC/DC Converter L1A L1B 1nF 10µH 10µH 10Ω • • LT3483 4.7µF SHDN FB GND C1: TAIYO YUDEN EMK316BJ475ML C2: TAIYO YUDEN JMK316BJ106ML L1A, L1B: WURTH 744876100 RELATED PARTS PART NUMBER DESCRIPTION LT1617/LT1617-1 350mA/100mA (I ) High Efficiency SW Micropower Inverting DC/DC Converter LT1931/LT1931A ...