ZHCSNR7A March 2022 – August 2022 TPS55289
PRODUCTION DATA
To minimize the power dissipation of the internal LDO when both input voltage and output voltage are high, an external 5-V power source can be applied at the VCC pin to supply the TPS55289. The external 5-V power supply must have at least 100-mA output current capability and must be within the 4.75-V to 5.5-V regulation range. When the EXTVCC pin is connected to logic low, the device selects the external power supply to supply the device through VCC pin. When the EXTVCC pin is connected to logic high, the device selects internal LDO.