products and disclaimers thereto appears at the end of this data sheet. With the MODE pin low, the bq/1 defaults to USB charging at the charge rate. BQ datasheet, BQ circuit, BQ data sheet: TI – SINGLE-CHIP LI -ION CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC,alldatasheet. Click on a date/time to view the file as it appeared at that time. Date/Time, Dimensions, User, Comment. current, , 7 December , ( MB), Knight (talk.
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The Datashdet package is available in the following options: The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources. As the IOUT load reaches 0. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
The package includes a QFN thermal pad to. This features 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.
It is difficult to estimate a total safety time without integrating the above equation over the charge cycle. Temperature Regulation and Daatasheet Protection In order to maximize charge rate, the bq features a junction temperature regulation loop. This feature revives deeply discharged cells. Timer Fault Recovery As shown in Figure 3, bq provides a recovery method to deal with timer fault conditions.
BQ from Texas Instruments
The safety timer is dynamically adjusted while in DPPM mode. Due to the charge profile of Li-xx batteries, the maximum power dissipation is typically seen at the beginning of.
Otherwise, the output drops to the battey voltage; therefore, the system should have a low-power mode for USB power application. If the output load exceeds the available USB current, the output instantly goes into the battery supplement mode. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Submit Documentation Feedback 21 bq www.
The bq only requires a small output capacitor for loop stability. Power-Path Management Case 1: The device suspends charge by turning off the power FET and holding the timer value i.
Information published by TI regarding third-party products or services does not datxsheet a license from TI to use such products or services or a warranty or endorsement thereof. The charge current is reduced until there is no further drop on the output voltage. The voltage on the ISET1 pin is directly proportional to the programmed charging current.
The hq24070 remains high at current limit and the voltage drop is large for maximum power dissipation. This feature prevents draining the battery into the bq during the absence of input supply.
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TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating bq24007 any combination, machine, or process in which TI products or services are used. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.
Products Applications Amplifiers amplifier. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
See a typical charge profile, application circuit, and an operational flow chart in Figure 1 through Figure 3, respectively. For example, if the peak system load is 1. The Q2 FET continues to connect the battery to the output systemif input power is not sufficient; however, a short-circuit protection circuit limits the battery discharge current such that the maximum power dissipation of the part is not exceeded under typical design conditions.
When datashewt current remains below 2 A, the battery charging current may be raised until the datadheet regulation limits the charge current. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. Reproduction of this information with alteration is an unfair and deceptive business datasgeet.
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