ZHCSB86E November 2011 – October 2021 TPS62150 , TPS62150A , TPS62151 , TPS62152 , TPS62153
PRODUCTION DATA
The TPS6215x has a built-in power-good (PG) function to indicate whether the output voltage has reached its appropriate level or not. One use of the PG signal can be for start-up sequencing of multiple rails. The PG pin is an open-drain output that requires a pullup resistor (to any voltage below 7 V). It can sink 2 mA of current and maintain its specified logic-low level. With the TPS62150, it is high impedance when the device is turned off due to EN, UVLO, or thermal shutdown. The TPS62150A features PG = low in this case and can be used to actively discharge VOUT (see Figure 9-39). VIN must remain present for the PG pin to stay low. See the TPS62130A Differences to TPS62130 Application Report for application details. If not used, the PG pin should be connected to GND but can be left floating.
| DEVICE STATE | PG LOGIC STATUS | ||
|---|---|---|---|
| HIGH IMPEDANCE | LOW | ||
| Enable (EN = high) | VFB ≥ VTH_PG | √ | |
| VFB ≤ VTH_PG | √ | ||
| Shutdown (EN = low) | √ | ||
| UVLO | 0.7 V < VIN < VUVLO | √ | |
| Thermal Shutdown | TJ > TSD | √ | |
| Power Supply Removal | VIN < 0.7 V | √ | |
| DEVICE STATE | PG LOGIC STATUS | ||
|---|---|---|---|
| HIGH IMPEDANCE | LOW | ||
| Enable (EN = high) | VFB ≥ VTH_PG | √ | |
| VFB ≤ VTH_PG | √ | ||
| Shutdown (EN = low) | √ | ||
| UVLO | 0.7 V < VIN < VUVLO | √ | |
| Thermal Shutdown | TJ > TSD | √ | |
| Power Supply Removal | VIN < 0.7 V | √ | |