ZHCSIH9F March 2009 – July 2018 TPS65023-Q1
PRODUCTION DATA.
An RC filter connected at the VCC input is used to keep noise from the internal supply for the band-gap and other analog circuitry. A typical value of 1 Ω and 1 μF is used to filter the switching spikes generated by the DC-DC converters. A larger resistor than 10 Ω should not be used, because the current into VCC of up to 3 mA causes a voltage drop at the resistor causing the undervoltage lockout circuitry connected at VCC internally to switch off too early.