ZHCSIH9F March 2009 – July 2018 TPS65023-Q1
PRODUCTION DATA.
The undervoltage-lockout circuit for the five regulators on the TPS65023-Q1 prevents the device from malfunctioning at low input voltages and from excessive discharge of the battery. It disables the converters and LDOs. The UVLO circuit monitors the VCC pin, the threshold is set internally to 2.35 V with 5% (120 mV) hysteresis. Note that when any of the DC-DC converters are running, there is an input current at the VCC pin, which is up to 3 mA when all three converters are running in PWM mode. This current must be considered if an external RC filter is used at the VCC pin to remove switching noise from the TPS65023-Q1 internal analog circuitry supply.