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 power pad should be tied to the VSS plane. The safety timer is dynamically adjusted while in DPPM mode.
(PDF) bq24070 Datasheet download
This feature works as follows. Table 1 indicates when this feature is enabled. Short-Circuit Recovery The output can experience two types of short-circuit protection, one associated with the input and one with the battery.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. Use a single-point ground technique incorporating both the small signal ground path and the power ground path. Customers are responsible for dstasheet products and applications using TI components. At this time, the load has to be removed to recover. It can be calculated from Equation As the IOUT load reaches 0.
Why can’t my BQ charge up ?. – OnePlus Community
If the battery voltage goes datasgeet the recharge threshold, then the bq disables the I FAULT datassheet and executes the recovery method described for condition 1. The advantages include less power dissipation, lower system temperature, and better overall efficiency. The charge current is reduced until there is no further drop on the output voltage. The system’s power management is responsible for keeping its system load below the USB current level selected if the battery is critically low or missing.
The output, VOUT, is regulated to 4.
At the 4th division, the output has reached steady-state operation at the DPPM voltage level charge current has been reduced due to the limited USB input current. This theory is easily verified by performing a charge cycle on a discharged battery while monitoring the battery voltage and chargers datasheett pad temperature. DPPM has three main advantages. Charge voltage above recharge threshold V RCH and timeout fault occurs. See the Timer Fault Recovery section for additional details.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. To datasneet from this state, there is a mA current source from the battery to the output. Because the charge current typically is programmed for more current than the USB current limit allows, the output voltage drops to the battery voltage or DPPM voltage, whichever is higher.
Input power FETs turn off during thermal shutdown. As a safety backup, the bq also monitors the charge time in the charge mode.
TI is not responsible or liable for any such statements. Datashet internal compensation, the VREF pin requires a minimum 0. The battery supplement mode has no thermal protection. 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.
The Datsaheet design is focused on supplying continuous power to the system when available from the AC adapter or battery sources. Products Applications Amplifiers amplifier. The following provides some guidelines: Under USB operation, when the loads exceeds the programmed input current thresholds a similar pattern is observed. A capacitor can be placed on the DPPM pin to delay implementing the short-circuit mode and get unrestricted not limited current.
I DPPM is the internal current source.
If the output load exceeds the available USB current, the output instantly goes into the battery supplement mode.