Datasheet RT1720 (Richtek) - 2

RT1720 Ordering Information Marking Information
RT1720 01= : Product Code Package Type YMDNN : Date Code 01=YM F : MSOP-10 DNN Lead Plating System G : Green (Halogen Free and Pb Free)
Pin Configurations
Note : Richtek products are : (TOP VIEW)  RoHS compliant and compatible with the current FB 10 TMR requirements of IPC/JEDEC J-STD-020. VOUT 2 9 GND GATE 3 8 PGOOD  Suitable for use in SnPb or Pb-free soldering SNS 4 7 FLT VCC 5 6 SHDN processes. MSOP-10
Functional Pin Description Pin No. Pin Name Pin Function
Voltage Regulator Feedback Input. Connect a resistive divider from output to FB to 1 FB GND to set the maximum output voltage and voltage regulation set-point. Output Voltage Connection. VOUT is the lower reference voltage for the GATE 2 VOUT charge pump. 3 GATE N-MOSFET Gate Drive Output. Current Sense Input. Connect a sense resistor from VCC to SNS to monitor the 4 SNS current through the external N-MOSFET. 5 VCC Positive Supply Voltage Input. 6 SH ̅̅̅ D ̅̅ N ̅̅̅ Shutdown Control Input. 7 F ̅̅L ̅̅T ̅̅̅ Open-Collector Fault Output. 8 PGOOD Open-Collector Power Good Indicator. 9 GND Ground. Fault Timer Input. Connect a capacitor from TMR to GND to program the maximum 10 TMR time the part is allowed to remain in voltage regulation or current regulation mode. TMR capacitor with value greater than 0.47F is recommended. Copyright © 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS1720-01 November 2015 2