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RT9526GE Datasheet(PDF) 3 Page - Richtek Technology Corporation |
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RT9526GE Datasheet(HTML) 3 Page - Richtek Technology Corporation |
3 / 13 page RT9526A 3 DS9526A-03 July 2014 www.richtek.com © Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Function Block Diagram CC/CV/TR Multi Loop Controller Logic 200k BATT CHG_SB GND PGB ENB ISET VIN IMIN Current Set Block Sleep Mode OVP UVLO BASE EOC Set Block Switch Well VREF IBIAS Operation The RT9526A is a fully integrated low cost single cell Li- ion charger. It provides a fast-charge current setting by resistor RIREF. Pre-charge is 16.7% of fast charge current, while VBAT < 2.45V. The PGB pin is low, while VIN > POR, VIN < OVP, and VIN − VBAT > VOSH_H. The CHG_SB pin is low, while RT9526A is charging. The CHG_SB pin will go high while end of charger happens. End of charge condition is set by RIMIN. CHG_SB will go low again, while charge current is larger than 75% of fast-charge setting. The RT9526A charges continuously after end of charge happens. Li-ion battery will be full charged until CV = 4.2V. The RT9526A can be disabled by ENB = H. |
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