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BQ24070RHLR Datasheet(PDF) 9 Page - Texas Instruments |
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BQ24070RHLR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 33 page Pre-Conditioning Phase Current Regulation Phase Voltage Regulation and Charge Termination Phase Regulation Voltage Regulation Current Minimum Charge Voltage Pre− Conditioning and Term Detect Charge Current Charge Complete UDG−04087 Charge Voltage bq24070, bq24071 www.ti.com SLUS694G – MARCH 2006 – REVISED DECEMBER 2014 8 Detailed Description 8.1 Overview The bq2407x device is a highly-integrated Li-ion linear charger and system power-path management device targeted at space-limited portable applications. The bq2407x devices offer DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs and current sensors, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device. The bq2407x devices support a precision Li-ion or Li-polymer charging system suitable for single-cell portable devices. See a typical charge profile, application circuits, and an operational flow chart in Figure 2 through Figure 6, respectively. Figure 2. Charge Profile The bq2407x devices power the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources. Copyright © 2006–2014, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: bq24070 bq24071 |
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