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by using a control algorithm including pre-charge mode, fast charge mode and constant voltage mode
https://www.richtek.com/assets/product_file/RT9536/DS9536-01.pdf
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can be configured to terminate charge based on user-selectable minimum current level and automatically restart the charge cycle if the battery voltage falls
https://www.richtek.com/assets/product_file/RT9451/DS9451-01.pdf
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a control algorithm to vary the charge rate via different modes, including pre-charge mode, fast charge mode, and constant voltage mode
https://www.richtek.com/assets/product_file/RT9455/DS9455-00.pdf
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The USB charge current can be selected from preset ratings100mA and 500mA, while the AC adapter charge current can be programmed up to 1A
https://www.richtek.com/assets/product_file/RT9511/DS9511-01.pdf
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Most Li-Ion applications can fast-charge with currents between 0.5C and 1C (where C is the
https://www.richtek.com/~/media/AN PDF/AN050_EN.pdf
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V OS Sleep State P-MOSFET = OFF NO Fast-Charge I CHG_F = 570mA R SET = 2.8k CV State V BATT = 4.2V I CHG = 0A Pre_Charge I CHG_pre = (1/10) x I CHG_F V IN < OVP & EN
https://www.richtek.com/assets/product_file/RT9516/DS9516-01.pdf
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7A Single Cell Smart Cap Divider and Direct Charge Charger with 8-Channel ADC, USB BC 1.2
https://www.richtek.com/assets/product_file/RT9757/DS9757-01.pdf
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8A Single Cell Smart Cap Divider and Direct Charge Charger with 8-Channel ADC, USB BC 1.2
https://www.richtek.com/assets/product_file/RT9757A/DS9757A-01.pdf
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battery applications it is important to know how much charge is left in the battery
https://www.richtek.com/battery-management/en/gauge.html
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A logic output indicates Li-ion full charge when current drops to 20% of the full-scale adjusted charge current
https://www.richtek.com/assets/product_file/RT9538/DS9538-02.pdf
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