ZHCSGR8A September 2017 – July 2018 TPS63710
PRODUCTION DATA.
The device is enabled when the EN pin is set to high. With EN set to low, the device shuts down. After EN is set high, the capacitor CCP (from CP to SW) is pre-charged with about 50mA. After the start-up delay time tdelay, the device starts switching and ramps the output voltage to its target value. See Soft-Start.
The EN pin must be set externally to high or low. An internal pull-down resistor of about 400 kΩ is connected and keeps EN low, if a low is detected internally and afterwards the pin is floating. When a high level is detected, the internal resistor is disconnected. The logic levels are referenced to the IC´s GND pin.