ZHCS920B May 2012 – April 2021 TPS54525
PRODUCTION DATA
VREG5 is an internally generated voltage source used by the TPS54525. It is derived directly from the input voltage and is nominally regulated to 5.5 V when the input voltage is above 5.6 V. The output of the VREG5 regulator is the input to the internal UVLO function. VREG5 must be above the UVLO wake up threshold voltage (3.6 V typical) for the TPS54525 to function. Connect a 1 μF capacitor between pin 3 of the TPS54525 and power ground for proper regulation of the VREG5 output. The VREG5 output voltage is available for external use. It is recommended to use no more than 5 mA for external loads. The VREG5 output is disabled when the TPS54525 EN pin is open or pulled low.