SLUSFB0 August 2024 BQ25758S
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The total input current is a function of the system supply current and the current. System current normally fluctuates as portions of the systems are powered up or down. Without DPM, the source must be able to supply the maximum system current and the maximum input current simultaneously. By using DPM, the converter reduces the current when the input current exceeds the input current limit set by the lower of IAC_DPM register bits, or IIN pin. This allows the current capability of the input source to be lowered, reducing system cost.
There are two thresholds to limit the input current (if both are enabled, the lower limit of these two will apply):
The default IAC_DPM is set to maximum code, allowing IIN pin to limit the current in hardware.
To set the maximum current using the IIN pin, refer to Section 7.3.4.3.1.1.
Using a 5-mΩ resistor yields programmability from 400 mA to 20 A with 50 mA/step.