ZHCSFB9B June 2016 – March 2019 TPS63070
PRODUCTION DATA.
The device has a built in power good output that indicates whether the output voltage has reached its nominal value. The PG signal is generated based on the status of the output voltage monitor. The power good circuit operates as long as the converter is enabled and VIN is above the undervoltage lockout threshold.
If the output voltage has not reached the regulated condition, the PG pin is held low. When the regulated condition is reached, PG is high impedance.
The PG output needs an external pull-up resistor. This resistor can be pulled to any voltage up to the maximum output voltage rating.
| EN | output voltage status | PG |
|---|---|---|
| low | output off | low |
| high | output voltage above power good threshold | high impedance |
| high | output voltage below power good threshold, in thermal shutdown or input / output overvoltage protection active | low |