The Texas Instruments TPS65573DSSR is a dedicated photoflash capacitor charger IC designed for xenon flash tubes. It integrates a high-voltage DC-DC converter that charges a photoflash capacitor from a low-voltage supply rail, then triggers the xenon tube via an external IGBT or SCR. The part targets compact camera modules, disposable cameras, and portable strobe systems where board area and battery life are constrained. Quiescent supply current is 2 mA, keeping the standby draw low enough for battery-powered operation.
No successor order code is listed on the record, so a replacement path must be evaluated — either a pin-compatible alternative within the TPS65573 family or a functionally equivalent charger IC from another supplier. For a BOM line already qualified to this part, the NRND status means the window for last-time-buy or transition planning is open. Sourcing through independent distribution is the practical channel for bridging production runs while a substitute is qualified.
Package and thermal handling — 12-WSON exposed pad
Mounting is surface-mount only. The Tape & Reel (TR) packaging is standard for automated pick-and-place assembly. No through-hole variant exists.
Operating temperature range is -35°C to 85°C.