The LTC2942-1 mea- sures battery current by monitoring the voltage developed across its internal sense resistor and then integrates this information to infer charge. The internal sense resistor is tied between the SENSE+ and SENSE– pins and is con- nected to an auto-zeroed differential analog...
2. Once the battery voltage increases to a certain threshold (VPRECHG), the prescribed maximum charge current is allowed to flow. This current is maintained by a regulation loop known as the current-regulation/ constant-current phase. 3. After the battery voltage increases to the set ...
Soft-start after fault is explained in the under-voltage lockout section. Maximum duty-cycle and soft-start are pro- grammed by the following relationships: (4) (5) down as the reset time increases. If during a transient the duty-cycle is allowed to in- crease excessively, the MOSFET ...