SLUSAS0E December 2011 – April 2021 BQ2946
PRODUCTION DATA
Customer Test Mode (CTM) helps reduce test time for checking the overvoltage delay timer parameter once the circuit is implemented in the battery pack. To enter CTM, VDD should be set to at least 10 V higher than V1 (see Figure 8-2). The delay timer is greater than 10 ms, but considerably shorter than the timer delay in normal operation. To exit CTM, remove the VDD to V1 voltage differential of 10 V so that the decrease in this value automatically causes an exit.
Avoid exceeding any Absolute Maximum Voltages on any pins when placing the part into CTM. Also avoid exceeding Absolute Maximum Voltage for the cell voltage (V1–VSS). Stressing the pins beyond the rated limits may cause permanent damage to the device.
Figure 8-2 shows the timing for the CTM.
Figure 8-3 shows the measurement for current consumption for the product for both VDD and Vx.