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GRM31CR61E106K Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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GRM31CR61E106K Datasheet(HTML) 2 Page - Richtek Technology Corporation |
2 / 15 page RT7237J 2 DS7237J-00 September 2012 www.richtek.com © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Functional Pin Description Pin No. Pin Name Pin Function 1 BOOT Bootstrap for High Side Gate Driver. Connect a 0.1 μF or greater ceramic capacitor from BOOT to SW pin. 2 VIN Supply Voltage Input, 4.5V to 18V. Must bypass with a suitable large ceramic capacitor. 3 SW Switch Node. Connect this pin to an external L-C filter. 4, 9 (Exposed Pad) GND Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. 5 FB Feedback Input. It is used to regulate the output of the converter to a set value via an external resistive voltage divider. 6 COMP Compensation Node. COMP is used to compensate the regulation control loop. Connect a series RC network from COMP to GND. In some cases, an additional capacitor from COMP to GND is required. 7 EN Enable Input. A logic high enables the converter; a logic low forces the IC into shutdown mode reducing the supply current to less than 3 μA. 8 SS Soft-Start Control Input. SS controls the soft-start period. Connect a capacitor from SS to GND to set the soft-start period. A 0.1 μF capacitor sets the soft-start period to 13.5ms. Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Pin Configurations (TOP VIEW) SOP-8 (Exposed Pad) BOOT VIN SW GND SS EN FB COMP GND 2 3 4 5 6 7 8 9 Marking Information RT7237JAHGSP : Product Number YMDNN : Date Code Package Type SP : SOP-8 (Exposed Pad-Option 2) RT7237JAH Lead Plating System G : Green (Halogen Free and Pb Free) RT7237JAH GSPYMDNN |
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