SLVSBD0B November 2012 – June 2020
PRODUCTION DATA.
See Programming the Current-Limit Threshold for the current limit setting. For auto-retry functionality, once FAULT is asserted, EN pulls low, TPS2553-Q1 is disabled, FAULT is de-asserted, CRETRY is slowly charged to EN logic high via RFAULT, then enables after deglitch time, FAULT is asserted again. In the event of an overload, the TPS2553-Q1 device cycles and has output average current. ON-time with output current is decided by FAULT deglitch time. OFF-time without output current is decided by RFAULT x CRETRY constant time to EN logic high and ton time. Therefore, set the RFAULT × CRETRY to get the desired output average current during overload.