ZHCSSS8 august 2023 TPS552872
PRODUCTION DATA
An internal LDO to supply the TPS552872 outputs regulated 5.2-V voltage at the VCC pin. When VIN is less than VOUT, the internal LDO selects the power supply source by comparing VIN to a rising threshold of 6.2 V with 0.3-V hysteresis. When VIN is higher than 6.2 V, the supply for LDO is VIN. When VIN is lower than 5.9 V, the supply for LDO is VOUT. When VOUT is less than VIN, the internal LDO selects the power supply source by comparing VOUT to a rising threshold of 6.2 V with 0.3-V hysteresis. When VOUT is higher than 6.2 V, the supply for LDO is VOUT. When VOUT is lower than 5.9 V, the supply for LDO is VIN. Table 7-1 shows the supply source selection for the internal LDO.
| VIN | VOUT | INPUT for VCC LDO |
|---|---|---|
| VIN > 6.2 V | VOUT > VIN | VIN |
| VIN < 5.9 V | VOUT > VIN | VOUT |
| VIN > VOUT | VOUT > 6.2 V | VOUT |
| VIN > VOUT | VOUT < 5.9 V | VIN |