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RT7237J Fiches technique(PDF) 14 Page - Richtek Technology Corporation |
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RT7237J Fiches technique(HTML) 14 Page - Richtek Technology Corporation |
14 / 15 page RT7237J 14 DS7237J-00 September 2012 www.richtek.com © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Figure 8. PCB Layout Guide Table 3. Suggested Capacitors for CIN and COUT Location Component Supplier Part No. Capacitance ( μF) Case Size CIN MURATA GRM31CR61E106K 10 1206 CIN TDK C3225X5R1E106K 10 1206 CIN TAIYO YUDEN TMK316BJ106ML 10 1206 COUT MURATA GRM31CR60J476M 47 1206 COUT TDK C3225X5R0J476M 47 1210 COUT MURATA GRM32ER71C226M 22 1210 COUT TDK C3225X5R1C22M 22 1210 VIN VOUT GND CIN GND CP CC RC SW VOUT COUT L R1 R2 Input capacitor must be placed as close to the IC as possible. SW node is with high frequency voltage swing and should be kept at small area. Keep analog components away from the SW node to prevent stray capacitive noise pick-up The feedback components must be connected as close to the device as possible. BOOT VIN SW GND SS EN FB COMP GND 2 3 4 5 6 7 8 9 CSS GND VIN REN CBOOT |
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