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MAX757EPA Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX757EPA Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 8 page 3.3V/5V/Adjustable-Output Step-Up DC-DC Converters 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters GND GND LBI OUT 3/5 (MAX756) FB (MAX757) REF SHDN LX LBO 0.122" (3.10mm) 0.080" (2.03mm) ___________________Chip Topography ________________________________________________________Package Information L DIM A A1 B C D E e H h L α MIN 0.053 0.004 0.014 0.007 0.189 0.150 0.228 0.010 0.016 0˚ MAX 0.069 0.010 0.019 0.010 0.197 0.157 0.244 0.020 0.050 8˚ MIN 1.35 0.10 0.35 0.19 4.80 3.80 5.80 0.25 0.40 0˚ MAX 1.75 0.25 0.49 0.25 5.00 4.00 6.20 0.50 1.27 8˚ INCHES MILLIMETERS α 8-PIN PLASTIC SMALL-OUTLINE PACKAGE H E D e A A1 C h x 45˚ 0.127mm 0.004in. B 1.27 BSC 0.050 BSC 21-325A PC Layout and Grounding The MAX756/MAX757 high peak currents and high-fre- quency operation make PC layout important for mini- mizing ground bounce and noise. The distance between the MAX756/MAX757’s GND pin and the ground leads of C1 and C2 in Figure 1 must be kept to less than 0.2" (5mm). All connections to the FB and LX pins should also be kept as short as possible. To obtain maximum output power and efficiency and mini- mum output ripple voltage, use a ground plane and solder the MAX756/MAX757 GND (pin 7) directly to the ground plane. TRANSISTOR COUNT: 758 SUBSTRATE CONNECTED TO OUT 8 _______________________________________________________________________________________ |
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